Phylactery 16

This is a new session resuming the Lich Survivors project, so I should check in on status and open items before diving into any design work, per my own feedback note. Let me pull up the project memory file and the record to see where things stand.

I should check the latest state in the memory file along with the most recent entries in RECORD.md.

I'm now in the lich-survivors directory, so I'll check NEXT_SESSION.md to see what's there.

These untracked sfx files like beam_cast_10 look like they came from sound editor tuning variants. I'm checking whether sound_picks.lua actually references these new files, and whether it's changed at all since the last commit.

Nothing's changed since the session ended, so those untracked sfx files aren't urgent right now. The plan is to give a brief status update and ask whether the unlock sounds are finalized, so let me check whether the unlock slots are still marked red.

Only "pour" has a confirmed name so far (magic_pop_open_01), the other four sound descriptions remain unverified. I should give a brief status update and ask him to weigh in on the pending ones first before I continue.

I'm examining the sound and effects timing files to understand how letter-landing events get scheduled, since each letter needs its own flight-and-landing animation triggered individually or in alternating pairs as it settles into its final position.

Now I need to check the site-side file, unlock_fx.lua, to find where letters fly and land, and where game_unlock_sound gets triggered.

I'm figuring out that each letter lands once its animation progress hits 1, so I can fire a 'land' event at that moment per letter. With roughly 16 rows and dozens to over a hundred letters each, that's somewhere around 800-1600 landing events spread across the few seconds of the animation.

That's way too many sounds per second to play directly, so I need throttling—maybe only trigger sound on every Nth letter, plus respect a voice cap and minimum gap between plays, similar to the slot gap/max settings in the audio system. I should check how the game's audio module handles gap and max before deciding on the exact approach, and also get a real letter count per row to size the throttle correctly.

Time-based gap/max thinning handles the ramping landings better than a fixed stride would, since I can rely on existing gap/max settings rather than adding a new counter. Let me check audio.lua to confirm how gap and max actually behave in the editor.

I realize gap is a code-side option rather than an editor setting, so I'll handle letter density in the game logic itself, making it configurable so every letter or every other letter can trigger spawns—maybe even tying it to one of the existing test keys.

Before settling on a ratio though, I should actually measure the landing rate. Running the numbers: with rows spaced 0.2s apart and letters spread 0.35s within each row, a row with ~60 glyphs could land at roughly 170/s, with overlap across rows pushing the total toward 300/s — dropping to 150/s if I only trigger every other letter. That's still dense enough to risk overwhelming the sound engine's voice pool, so I need to check what cap it has before deciding how aggressive the sampling should be.

The cleaner design is to give him a stride parameter he can tune live — maybe a key to cycle between every letter, every 2nd, 4th, 8th — so he can judge density by ear. But the final chosen stride needs to persist somewhere real, not just the test harness: likely as a constant the game reads when receiving land events from the site, so the decision about which letters actually trigger sound lives in the game itself rather than the site.

As for pitch, I don't think I'll auto-pitch landings the way the burst sounds rise by row — the slot's built-in random pitch range already gives enough variety, so I'll leave rising pitch as an optional touch rather than a default behavior.

On performance, I want to check what per-letter game_host_call costs inside the shared VM, so I should peek at game_host.lua to see how calls are handled there. I also need to decide whether the standalone sim mirrors these land events — since it doesn't track letter counts directly, I could approximate with a fixed number of letters per row landing at randomized times within the spread-plus-flight window, especially since the old run-egg.bat script won't be needed going forward.

I should also check how voices get played when hosted — whether muted or unplaced slots use plain voice playback — and look for an engine-wide voice cap like MAX_PLAYING in anchor.c.

I'm thinking about how letters landing should trigger sound effects, counting landings and firing a cycle-able "every Nth" rule for which letters play sound, and figuring out what index/total values get passed to the effect call.

But at high letter speeds, multiple letters can land in the same frame, causing phasing or loudness spikes if each plays an identical sound. Rather than guess, I should measure actual letter-landing density per frame—there are probe scripts in the scratch folder I can check to get real numbers before deciding whether to dedupe to one sound per frame.

I need to figure out the correct drive command format—recalling how the probes were run with env vars like SITE_UNLOCK_TEST and LICH_START before invoking anchor drive start. Let me check docs/SURFACE.md for how drive eval handles file input, searching for a flag like "--file" or "@" syntax.

I want to add a probe tracking letters per row and their landing times, then wire up a landing callback in unlock_fx_update that fires once a letter settles into place—this gives the owner a hook to trigger sounds per letter as each one connects to its final position.

I should check whether 'l' is already bound as a key elsewhere in the site before using it for the land-every cycle, and need to decide how to handle multiple simultaneous landings in one frame—playing five overlapping voices could sound too loud, so capping playback to one per frame seems like the safer default even though it slightly changes the "every other letter" cadence.

I'm also wondering whether A.now keeps advancing when the hosted game is off-screen or paused, since a gap-based dedupe depends on that clock moving forward; if it's frozen, gap logic would drop nearly everything after the first play. Rather than guessing, I should write a probe to measure actual landing counts and their per-frame distribution before committing to a dedupe strategy.

I need to confirm how env vars propagate when starting the drive against the site renderer directory, referencing how s15 launched a similar test, and check that the renderer's main.lua behaves as a normal Anchor game under that CLI.

On the sound side, I'm tracing US.play('land', i, n) through to AU.play('unlock_land', o), which means I need to register 'unlock_land' in both SLOTS and SEEDS with candidate sounds — likely short ticks, clicks, glass tinks, or sparkles. I need to find the sound library root referenced by sfx_spec.py, and check the prior unlock_cands.json to see how candidates were selected last time.

I should look through the Desktop sound packs for short tick, click, or tink sounds — searching filenames like typewriter, glass tap, pebble, chip, coin, or small pop, since a typewriter key sound could nicely fit letters landing.

Since he wants to attach sounds himself, this slot should stay silent/red by default but offer a few candidate suggestions — things like a soft single keystroke, a tinkling chime, or a glass tink sound.

Looking at these sound candidates, I'll go with the soft typing keystroke sound for letters. Now I should check the durations of each clip.

I'm thinking about density first—whether to play a sound for every letter or every other, and whether to cap plays per frame—so I want to probe actual landing timings from the run's letter data before deciding. I also need to verify how the drive script passes environment variables like SITE_UNLOCK_TEST and LICH_START, so I'll check past session logs for how the anchor drive invocation set those.

I'm estimating the letter throughput: roughly 673 letters over 3.33 seconds averages around 200 per second, meaning a dense rain-like patter with several letters per frame and up to a dozen in a burst. With sounds lasting 50-200ms firing at that rate, I'd get 5-20 overlapping voices, well within the 512 voice cap, so I'm now weighing whether to cap triggers to one per frame to avoid overwhelming bursts.

Multiple sounds landing in the same frame would start at identical sample offsets and stack loudly, though pitch randomization adds some variation. I'm checking whether the play function supports a delay option to spread out same-frame plays with sub-frame timing, which depends on whether the game's update loop keeps running while muted offscreen — if it does, delays could work, though that adds complexity I want to avoid. I'm leaning toward keeping things simple rather than trying to sub-frame schedule exact landing times.

A per-letter stride with a per-frame cap would be frame-rate dependent in a bad way — a cap of one event per frame gives very different throughput at 60Hz versus 144Hz, which isn't the behavior I want. A time-based thinning approach using the game's existing gap mechanism seems better, so I want to check whether that timer still advances while the game is hosted offscreen and muted by looking at how game.lua handles the quiet/update logic.

Since the host's timing doesn't advance during unlocking, the thinning logic has to live on the site side using its own clock. I'm deciding to track landed letter count and fire every nth landing, possibly with a minimum time gap between triggers, depending on whether the design calls for every letter or alternating ones.

For the knob itself, I'll let it be configurable as every letter, every 2nd, 3rd, or 4th (or none), skipping the time-gap idea for simplicity. The tricky part is handling many simultaneous landings in one frame — with "every letter" mode, a dozen letters landing together means a dozen overlapping voices, which the slot's volume and pitch randomization should soften rather than needing a hard per-frame cap. I'm also checking whether the engine's sound playback supports a future start offset, since sub-frame scheduling isn't really possible otherwise.

I'll just accept that per-frame coincidences are inherent to the system and let the stride setting be his tool for controlling density — defaulting to "every letter" since he listed it first, even though at high speed it'll blur into a continuous crackle, which is really his call to balance. For the simulator script, I'll mirror the real site's behavior by assuming roughly 42 letters per row and applying the same stride and timing logic, making sure randomization still comes from the file's own generator rather than a different math source.

For the timing randomness in unlock_snd, I'm wary of touching the game's run RNG, so instead of calling math.random I should use a self-contained deterministic hash function to generate pseudo-random offsets — this keeps digests stable even if the egg-opening sequence happens outside the normal run flow. On the stride mirroring question, I'm realizing the site is the authority that decides which letters fire events, so the simulator just needs to copy that same land-every value, though if he tweaks it during testing that change would only apply to that session.

I'm keeping game_unlock_sound's signature as (event, i, n) to track row position and total rows for the landing sound logic, and confirming the land event should fire whenever a letter settles into its final spot, whether that's through the eased animation reaching u=1 or the spring physics settling. I also want to check what happens on the live site when the admin/public view path tries to play the 'land' slot that doesn't exist in that copy of the game — tracing through whether AU.play silently returns nil for unknown slots instead of erroring.

Checking that the host call is wrapped safely so a missing slot won't break anything, then looking into how the editor's TAB-accessible unlock slot list gets positioned on top of the UI.

Since he wants unlock slots added, I'll insert 'unlock_land' right after 'unlock_pour' in the effect ordering sequence—pour, land, lift, burst, sweep, final. Starting with the game side implementation first.

I'm double-checking whether I accidentally converted line endings during the write — but git diff confirms only one line changed, so the original LF endings were preserved. Now I need to move on to editing unlock_snd.lua, starting by reading the file first.

Sound code shouldn't rely on the game's rng, so my deterministic hash approach works fine here. I'm now editing unlock_snd.lua.

I need to update the event documentation line and the simulation, adjusting the play() comment along with the US.SITE and US.start values.

Table.sort's instability shouldn't matter much since computed landing times are mostly distinct. I'm working out the stride mirroring: land_every stays at 1 by default, with roughly 42 letters per row based on measured dimensions, and I'm computing each landing time from row index, spread, and flight duration, then sorting by that time and applying the stride count in landing order to decide which events actually play.

I'm fixing the wording on that comment about the letter's landing post index, then moving on to check unlock_fx.lua on the site side.

Those site changes belong to other sessions, so I'll leave them alone. Now I need to edit unlock_fx.lua, reading the relevant ranges first to enable editing.

I'm checking whether 'l' is already bound to some other key-press handler elsewhere in the site's code.

I'm checking that `max` and `sfx` are both defined in scope before they're used later, and confirming the sound role lookup safely returns nil when there's no matching set rather than erroring.

I'm also worried about stale code: the running drive instance may have been started before my edits, so unlock_fx.lua might not hot-reload. I need to restart that instance to test properly, and make sure the probe points at the actual edited game directory (lich-survivors editor hosting) rather than the mirror, without accidentally triggering a write-back to sound_picks.lua.

For the probe itself, I want to count how many times 'land' fires and how many of those trigger a voice given an in-memory unlock_land file, verify that land_every=2 halves the count as expected, and confirm AU.play handles work correctly even when muted. I also want to check the run-egg path separately by calling US.start/US.tick in the game instance while wrapping AU.play to count calls, and confirm that LICH_ROOM digest output stays unaffected since my changes only touch the sound-loading path, not the room RNG.

Since AU.NEW doesn't draw from the game's rngs when loading a slot, the digest check should still hold. I'll run tools/digest_run.lua with LICH_ROOM=1 and compare against the scratch/s15/digest_head.txt baseline to confirm.

This seems to be working within expected bounds, capped at 15 per frame and 5 every other tick with some randomness. I'm confirming that the seeded unlock state resets properly on game restart since the probe's in-memory changes aren't persisted, which is the correct behavior. Now I want to verify the picks files are unchanged before running the anchor check for lich-survivors.

Confirmed all three paths check out: 673 calls/voices at every letter, 337 at alternating letters, matching the game's own schedule. Now verifying the picks files are untouched, then running static checks and the digest.

No new warnings beyond what's pre-existing. I need the LICH_ROOM digests to remain unchanged, so I should check how digest_run.lua was invoked previously, like in step 15, by searching the record for that command.

I need to check whether scratch files are tracked in git before committing, and make sure to update RECORD.md with the round 79 entry and check if REDESIGN.md needs the session 15 site-side notes.

I'm considering adding a short subsection 45c, so I'll check the end of section 45 to see where to append it.

I should commit both repos, but for the site repo only stage my two files since others made modifications I shouldn't touch. I'm wary of pushing the site repo since there's a push hook that triggers deploy, so I'll keep that commit local; the lich-survivors repo is private so pushing at session end is safe. Now I need to check whether scratch/ is tracked in the lich-survivors repo.

One caveat worth flagging: since the unlock_snd.lua change requires a game restart to load, I should tell him to close and reopen run-unlock.bat if it's already running. I also note the new slot sits in AU.NEW, which matters for how the editor saves it.

I notice the mouse wheel is scrolling the site page instead of the game's editor list when the hosted game's editor is open. I need to find where the site handles wheel events and how game_host passes input through, so I can make the site's scroll yield to the game when it's capturing input.

I'm checking whether the game captures the wheel event while the cursor hovers over it, since it fills the window, and wondering if the editor reads the wheel through a direct mouse_wheel call or through an input bind instead.

Maybe wheel_through is set for lich-survivors, or something earlier in main.lua (like a logview check) is intercepting the wheel before the game gets it. I should look at the def file for lich-survivors to see if it's gated differently.

There's no lich definition in game_host.lua since that comes from data, following the format described in convert.lua with flags like pixel, fixed, fill, capture_keys, and wheel_through. I need to find the Lich admin entry's flags by grepping through data/admin or admin_items_desktop.

I'm realizing the wheel_through embed setting lets the page scroll past the game since it normally ignores wheel input, but when the game's editor is open and capturing input, the wheel should go to the game instead of scrolling the page. I'm considering using the existing game_host_wants_keys() check or a dedicated flag to detect that capturing state and route wheel events accordingly.

I'm planning to add a `game_wants_wheel()` check so the host disables wheel_through when the game's editor mode is active, mirroring how game_text_focused is handled, and starting to write that logic into game_host.lua.

I realize the game's env already holds its global functions as its _ENV, so I can reference `env.game_wants_wheel` directly inside the mouse_wheel closure rather than needing `it.env`. I need to apply this check both in env.mouse_wheel (at both usage sites) and in game_host_captures_wheel, then verify how the second mouse_wheel instance around line 375-385 is used before finalizing.

I'm looking at both env.mouse_wheel definitions in game_host.lua to see if one overrides the other, and planning to consolidate them by extracting a shared `wheel_through(it)` helper placed near the top of the file before both call sites.

Since the closure captures it.env at call time, that part's settled. Now I'm defining game_wants_wheel on the game side to check if the editor is active and the sound UI isn't in play mode, but I need to verify what SU.mode() returns when the UI is closed.

I'm checking that SU is declared before game_sound_editor references it, confirming that was already fixed earlier. Now I'm considering whether the wheel can be reached through the eval channel in a headless check.

Since both the game host and main.lua look up `mouse_wheel()` as a global at call time, I realize I can avoid any wheel injection entirely by temporarily shadowing the global function with one that returns a fixed scroll value for a single frame.

I want to verify that doing this moves the editor's own list_scroll while leaving the site's scroll untouched, and compare that against the editor-closed case where the page should scroll normally. The tricky part is that soundui's `ui` table is local, so I don't have a direct accessor into list_scroll — instead I'll wrap env.mouse_wheel to record what value the game actually received, then correlate that with whether site_scroll_y changed. My plan: run the probe with the editor closed first to get baseline scroll behavior, then open the sound editor via TAB and repeat the stubbed scroll with the wrapped mouse_wheel to see if the behavior diverges between the two states.

I also need to be careful about side effects — opening the editor list shouldn't write to sound_picks since that only happens on edit or save, and resume's flush_saves should be a no-op if nothing's pending, but I'll snapshot md5 before and after just to be safe. I'll avoid calling resume and just stop the instance directly after the probe.

I'm wondering if the mismatch comes from the game polling mouse_wheel twice per rendered frame since the site seems to run two updates per draw—meaning a single real scroll notch could register as two notches if the update loop runs at double the render rate.

This could also just be a quirk of the engine's input edge handling, where wheel delta might only be valid during the first fixed update of a frame and cleared afterward, similar to key-press edges. I should check anchor.c for how wheel delta is reset and search the game code for other spots calling mouse_wheel beyond the one in M.update to see if there's a duplicate read happening elsewhere.

I'm wondering if that camera zoom code at line 655 runs independently of the editor's input handling, since the editor might just pause the game rather than block its own wheel-reading logic. If so, both the scroll list and the game's camera zoom (limited to CAM_FREE/CAM_EGG and inspect modes) could end up reading the same wheel event twice.

In editor mode, input_update returns before mouse_input runs, so the camera wheel isn't captured while the editor's open — meaning two SU.update calls happened during the stub step, suggesting two game updates occur per drawn frame. I need to figure out when mouse_wheel_y actually resets at line 5481 in the real engine — whether that happens once per frame or once per fixed update.

If it resets per-frame and there are 2 updates per frame, a real wheel notch would scroll the editor list twice as much as expected — 6 rows instead of 3. I want to check that against the code.

The wheel delta should reset each physics update, so a real notch gets consumed by exactly one update — the double-read bug happens because the stub value persists across both updates in that engine_step. That also explains why the page moved 200px with the editor closed: two notches at the 100px wheel_speed setting, matching the doubled read.

Checking the unlock test scenario is irrelevant since FILL mode means the game always fills the window, so cursor-over-game is never an issue. On web, game_wants_wheel only returns true when EDITOR is active (desktop-only), so the admin copy's wheel-through behavior is unaffected since EDITOR is false there — that's correct. I'll do a quick anchor check on both before committing, and leave a brief note about RECORD/REDESIGN.

Found that the double read came from my stub, not the engine—it stayed active across two updates while the engine clears the wheel after each one, unlike a real notch which only spans a single update. Running static checks now, then committing.

I'm puzzling over why R stops working after TAB — game_host_wants_keys checks whether the editor is active and capturing input, which doesn't depend on whether the editor panel is open, so I need to trace why R behaved differently before TAB was pressed.

The real issue is that before TAB, the game wasn't in view so the cursor wasn't over it, letting R through, but after TAB brings the game into view, capturing becomes true and blocks R — even after closing the editor, since the game still fills the window. The fix should make game_host_wants_keys true only while the editor is genuinely open and needs keyboard input, rather than whenever the cursor hovers over the game.

But I also need to check for interference: both the site's TAB handler and the game's own TAB handling for opening the list could fire together, possibly causing a toggle-flicker where one opens the list and the other closes it depending on execution order between unlock_fx_update and game_host_update.

I'm thinking a cleaner approach is to gate game_host_wants_keys() specifically on whether the game's internal editor UI is currently open, rather than on general capture state, so the site's TAB handler only stands down when the editor is already showing — avoiding double-handling of the same keypress.

I've confirmed the issue: the key-capture flag stays tied to both editor mode and capturing state, so after TAB the game grabs focus under the cursor and swallows R even once the editor's closed. I'm considering checking whether the editor is truly open via the game's own wants-keys signal, so that when it's closed, the site's test shortcuts (R, E, C, U, T, S, L) and TAB still reach the site handler properly.

Tracing through the update order, I realize unlock_fx_update likely runs before game_host_update, meaning TAB would trigger the site's sound editor to open a list menu — but then the game's own input update, seeing list mode, might immediately call resume() on that same TAB press, closing it right away. I need to check whether open_list sets some "fresh" flag to suppress that same-frame key check, since otherwise the open/close would cancel out instantly.

Also thinking about the R key: in hosted mode the game ignores test keys entirely, but when the editor's picker is open and someone types 'r' into a search field, that letter needs to reach the editor rather than being swallowed as a game shortcut. So I'm considering gating test keys based on whether the editor is actually open — block them during editor use, allow them otherwise — and defining a wants_keys check tied to editor state and mode, mirroring the wheel-scroll logic, so the game host can properly decide when to let keystrokes through to the editor versus the game itself.

Now I'm tracing the TAB handling conflict: both the site and the game react to TAB in the same frame, causing a toggle to open and immediately close again since the site opens the sound editor while the game's own input loop sees TAB and resumes/closes it. The fix is to make the site's TAB handler stand down whenever the cursor is capturing over the game, letting the game handle TAB exclusively in that case.

I also need to check the main.lua page shortcut keys that use game_host_wants_keys — with this change, hovering over the game while the editor is closed should restore page shortcuts like ui_toggle and theme_toggle, so I'm checking whether those bindings were already excluded correctly before this session's changes.

Checking that these shortcuts behaved the same way before, since page shortcuts aren't blocked while hovering for non-editor games anyway — this matches existing web behavior, so it should be fine. The Tab key maps to easy_toggle and is already excluded from the test, and I'm tracing through input_update to confirm the game-side TAB still works correctly while hovering in play mode, since key_is_pressed checks that the page doesn't have keys and that capturing is active — that logic holds.

When the editor is open, R is blocked since typing is active; once it's closed (via TAB or clicking outside), R works again, which matches the expected fix. I'm considering whether R should also work while the editor is in list or edit mode — since list mode only handles tab and edit mode handles escape, letting R restart the game there could speed up tuning, and since R triggers a full host restart anyway, the editor's UI state would reset regardless.

But there's a risk: if edits are pending and not yet flushed to disk when R restarts the game, those changes could be lost — saves seem to flush on resume (closing the editor), not continuously. So restricting R to only work when the editor is closed is the safer choice, since that guarantees a flush happens first; the simplest fix is to keep R disabled while the editor is open and let it work normally after closing, matching what he likely expected when the tab system blocked it.

I need to check what keys the editor actually reads in list and edit modes to be sure.

I'm checking that ui.fresh prevents a same-frame close when TAB is pressed right after the list opens, which should hold as long as SU.update checks fresh before handling list mode. I'm also tracing the editor's key bindings across list, edit, and picker modes, and confirming whether edits get saved immediately to sound_picks.lua or only flushed on resume via ui.dirty.

Thinking about whether the site's test keys (R, E, C, U, T, S, L) should pass through in list/edit modes since they don't conflict with the editor's own bindings (tab, escape, space, f, ctrl+z), but should definitely be blocked in picker mode since that's free text entry. I'm leaning toward defining game_wants_keys() as true only when the editor is open and in picker mode, so site keys work everywhere else but get safely blocked during search typing. Still need to confirm flush_saves() is actually called on drag release so an R-triggered restart while editing doesn't lose unsaved changes.

Edits flush promptly on drag release or button clicks, so pending dirty state only exists mid-drag, which seems safe enough. Still, I'm considering exposing a flush function on M for extra safety before restart, since soundui's sync logic is shared with megablock's porting tool.

Using resume() instead would flush saves, reset mode to play, and stop any active audition — a cleaner solution than adding a new flush function, and it protects against the rare case of pressing R mid-drag. Now I'm thinking about the keyboard gating design, where a function determines whether the editor should capture keys only when the picker is actively in text-entry mode, leaving other modes to let the site handle its own keyboard input.

But that raises a worry: does the site also respond to arrow keys or space bar for page scrolling? If so, that could conflict with the editor's own use of space for play preview in edit mode, so I need to check how the site's keyboard scroll handling is gated and whether it's already excluded when the editor is active.

I need to find where scroll keys like arrows and pgdown are gated, then decide whether narrowing the key-want check might accidentally expose page keys during editor list or edit mode. Rather than touching the global key gate, I'm considering whether to scope the test-letter unlock gate specifically to picker mode, while leaving edit mode's letter shortcuts untouched.

The real fix for his "R doesn't work after tab" bug is to make test letters stand down only while the editor is open, but let R (and F5) work whenever the editor isn't actively in typing/picker mode — since R is his replay key for the edit-then-listen workflow, it needs to function both before and after closing the editor.

For implementation, I want a single query function on the game side that reports its current mode (play/pause/list/edit/picker), so the host can decide when to pass keys through. Then in game_host.lua, I need to tighten the "wants keys" check so it only captures when the editor is genuinely open — this lets page shortcuts and the game's own TAB still work correctly when the editor is closed, while I also need to verify the update ordering between the site's unlock handler and the game host update so TAB doesn't double-fire across both systems in the same frame.

I'm checking that the fresh-update guard prevents double-TAB issues when the editor opens, and confirming the game's own TAB handler correctly stands down once the mode switches to 'list' so there's no conflict with the site's handler re-aligning the scroll.

Now I'm worried about `game_host_wants_keys` being too broad — if it's true whenever the editor is open at all (not just in picker mode), it would block R and other page keys even in list/edit modes where they should still work. I'm considering restricting that gate to only the picker mode, but then I need to check whether arrows and space in edit mode would collide with the page's own use of those keys for navigation or preview.

I'm sketching a replay_key check that blocks R/F5 if the compose or search inputs are actively capturing typed text, or if the editor is in picker mode specifically (since picker consumes raw keystrokes via the typed-text API), but otherwise lets R pass through even while the editor is open.

I want to change the host's key-blocking logic from merely checking "is capturing" to a broader "does the game want keys" flag, mirroring how wheel-scroll gets blocked — defining matching game_wants_keys/game_editor_mode functions in game.lua, both equivalent to checking if the editor is open and not in play mode. I'm also planning that pressing R while the editor is open should first close it cleanly, flushing and stopping any audio audition, via a new game_sound_close helper.

I confirm that triggering a restart does reload fresh sound picks from disk since it rebuilds the environment and calls AU.load_picks again, so no leftover state. Now I'm writing the actual host-side function that checks whether capturing is active and the editor's def allows it, falling back to true if the game doesn't define the function, otherwise respecting the game's own pcall-wrapped answer.

With that settled, I trace through the TAB and ESC behavior when the editor is closed over a running game — TAB should now correctly pass through to open the sound-editor list since wants_keys resolves false, while ESC still pauses as expected, and any site-level escape binding stays harmless since it doesn't conflict. I also check the edge case where the editor is open in a paused state, confirming replay keys remain gated properly by the picker. Satisfied with this, I move to writing the actual code.

Found the issue: the game fills the window under the cursor after TAB, so the test's key handler stands down whenever the cursor is over it, swallowing R. I'll fix it so R works whenever you're not typing in the editor's search.

I'm checking that pressing R doesn't conflict with other key handlers—editor mode and game play mode don't use 'r' elsewhere, so it should be safe. Also noting that on site restart, the sound close flow needs to resume properly.

Now I want to verify headlessly: start a test session with editor hosting, open the editor via TAB, confirm the game sees keyboard focus correctly, then inject an 'r' keypress to confirm it triggers the test-again restart and closes the editor first. I need to check the picker mode specifically too—pressing 'r' there should be treated as typed text, not trigger a restart, so I'll open the picker via the site's require call and test that case separately, wrapping the global restart function to count invocations.

Everything checks out, so I'll run the static checks next, then record and commit the results.

He wants to know exactly when these events trigger, so I need to trace through unlock_fx.lua, checking the unlock_row logic and the moment/hold timing defaults to give precise numbers.

I want to find where the 'lift' event gets triggered, so I'm searching for calls referencing that sound effect name.

I'm tracing when the lift animation fires relative to unlock_row, since that's the trigger moment for burst+shine. For each row, I need to work out the timeline of hold and rise durations so I know exactly when the row visually settles into place.

Working through the arithmetic, post i's lift fires around 1.47 + 0.2(i-1) seconds, with burst/sweep following 0.46s later. For post 16, that puts lift near 4.47s and burst near 4.93s, with the final effect landing around 5.23s — though these are approximate since the random fly timing can vary by up to ±0.03s.

Visually, each lift means the lock rises and trembles in warped air before swelling; the burst shatters it into glass with a white flash, ring, and warp ripple, while the sweep moves along the row at the same instant; the final moment, 0.3s after the last burst, has no visual effect of its own — it's just a closing beat. I'm also noting the overall cadence: since posts are spaced 0.2s apart, the lifts and bursts form a steady rhythmic sequence across all sixteen.

Given the timing, the lift of post 3 roughly overlaps with the burst of post 1, so the streams interleave once you get a couple posts in — which answers the "when exactly" question. Since actual lift timing depends on the final letter's landing, there's likely a few hundredths of jitter per post, so I'm considering running a quick probe to log real call times and verify the numbers precisely.

The zeros at the end make sense now — my probe's clock died because UNLOCK_FX.run got nilled out before those later bursts actually fired via the after() callbacks. Those bursts are timed off the last lift plus a fixed delay, so lift 16 at 4.47s plus 0.46s plus 0.3s lands the final one around 5.23s.

Now I'll lay this out as a table showing what's visible on screen at each timestamp, along with how the bursts interleave.

I'm figuring out that the stride should scale with text length to keep a constant target number of land sounds (~168-169) rather than a fixed interval, so I'll compute it as total letters divided by that target count and use a fractional accumulator to decide when to trigger each sound.

I'm realizing "faster" really refers to the rate of sounds per second, not just total count, so what matters is keeping stride proportional to letter density (letters per second) rather than raw letter count. If posts grow in number, duration scales with them so density stays flat and stride can stay near 4; but if individual titles get longer, density rises and the stride should adjust to compensate.

Normalizing against the current setup — about 673 letters landing over roughly 3.33 seconds, or ~202 letters/s — gives a target sound rate of about 50/s at every 4th letter, which I can use as the baseline to preserve regardless of future text additions.

An accumulator-based stride keeps the natural randomness of landings while scaling the sound count down proportionally, so each landing adds a fraction r = target_rate/density toward triggering a sound, equaling exactly 1/4 at baseline. I'm also weighing whether he means count-based or rate-based scaling — his phrasing "every 4th letter at the current number of letters" suggests the ratio is pinned to today's count so adding more text later doesn't speed things up, and for same-duration posts with longer text both interpretations should actually agree.

Rate-based preserves today's pace even as more posts or longer text get added, which matches his real concern about not wanting things to feel faster, whereas pure count-based scaling would eventually make things too sparse with many new posts. Now I need to figure out how span gets computed from the capture delays to finalize the density calculation.

I'm also wondering if letter counts could shift with truncated titles at narrower widths, but the rate-based normalization should absorb that automatically. The L key cycling through land_every values 1-4 needs to keep working under this new scheme, so I want to make sure the default of 4 still respects the "every Nth letter at today's count" behavior.

With 42 letters per row and the default setting of 4, the fraction works out to roughly every 4th letter landing — so I can just mirror that same land_every=4 value in the simulation code to keep things consistent. Now I'm thinking about the second requirement: making sure the final sound plays at the same time as the last burst, which means checking the logic for when all locks are broken.

For timing, since both the burst's delay and the final's delay are scheduled with the same lift value, they should fire in the same update frame. But the ordering of the countdown loop means the final sound added later would actually trigger before the burst within that frame, so I need a more reliable fix — probably triggering the final sound directly from inside the burst callback when it's the last row, rather than relying on separate timers.

So since the final fires the same frame as the last burst, I should change the delay from lift+0.3 to just lift, updating the comment accordingly and also setting US.SITE.final from 0.3 to 0 in the game sim. The timer loop iterates backward and fires callbacks within the same update, so simultaneous triggers work fine, and for non-burstshine cases with lift=0, the final event aligns with the last unlock's burst sfx.

I realize calling `after(0, fn)` still delays by one frame, so I should special-case it: if lift is greater than zero schedule it, otherwise call the function immediately.

Now I'm working out the pacing constants for the letter-landing sound effect in unlock_fx.lua, basing the landing rate on the historical data of 673 letters across 16 rows spread over a set duration, computing a base density to drive how fast letters land as more text is added.

I want the base pace to stay stable even if row timing changes later, so I'm storing it as an absolute rate (letters per second) rather than deriving it from the current row_dt and row_spread, then computing the fraction for "every 4th letter" sounds as a ratio against this fixed pace, clamped to at most 1, computed cheaply inline during the landed() call.

I'm testing the accumulator logic by hand: starting acc at 1, adding the fraction r each landing, and triggering a play whenever acc crosses 1 (subtracting 1 after). Checking with r=0.25 shows the play triggers on the 4th landing rather than the 5th, so I'm considering flipping the starting value to acc = 1 - r instead so the first landing itself plays.

I'm also worried about floating-point precision—since r might not be exactly 0.25 due to division rounding, the accumulator could land just under 1.0 and miss triggering on time, so I should add a small epsilon tolerance to the comparison.

Checking the span calculation: it's derived from row count minus one times row spacing plus spread, giving the baseline value of 3.35. The letter count of 673 should hold regardless of viewport scaling since that only affects pixel rendering, not glyph count, assuming the content and device are the same as measured.

Now I'm looking at how the game simulation handles the landing stride logic, with land_every set to 4 and a final value of 0.

I can also test with doubled text by duplicating the run's letters array mid-probe after capture, keeping the same span — that should still land around 169 since the ratio stays at 0.125, giving a real check of the "more text" case. Let me write that probe code.

I'm checking that the burst timing after the lift delay matches the final version exactly, since both use the same computed lift_t and get scheduled on the same frame. The 'later' list processing also subtracts identical deltas from identical starting values, so both reach zero on the same update — confirming the float equality holds.

Since the sort isn't stable, the final burst and last burst share the same timestamp so they'll fire together regardless, which is fine. I'm checking that the land call count matches expectations and that the final frame aligns with the last burst, then considering whether duplicating letters to test "more text" would mess with the row completion counts since those are initialized from the original element count.

If I duplicate letters, the row's remaining-letter counter hits zero at half completion, triggering the "row real" state early — but that only affects visual lift timing, not the land call total I'm trying to verify, so it's fine for this test. Running the real duplication logic is more faithful than computing a hypothetical share formula. I expect roughly 168 or 169 land calls given the math, and I'll capture frame numbers at burst 16 and at the final burst across two passes with a reset in between.

This probe used the mirror copy of the game, which lacks the 'land' slot but still intercepts game_host_call, so the counting still worked fine. I can quickly verify the land_every=4 math gives 168 of 672 calls, but it's trivial enough to skip actually running it since the digest change only touches constants.

Since those edits are constant-only with no rng involved, the digest shouldn't be affected, but to be rigorous it's cheap to double-check — I'll run the anchor checks plus digest together in one pass.

I need to figure out where the unlock changes currently live versus where they need to end up — it sounds like the unlock logic (land event, wheel, R) exists in both the lich-survivors game files and a site renderer copy, and I need to merge them into the actual game folder if that hasn't happened yet.

Since my edits were made directly in lich-survivors (the source), not the admin mirror, that part should already satisfy his request — the mirror just gets synced for deploy, so I should double check nothing diverges there.

Now I'm turning to the second task: reworking the lens power as a familiar, which means digging into port/lens.lua and how powers schedule attacks, keeping in mind the constraint that both builds must stay identical until he decides otherwise.

I need to be careful about round parity — rounds 48+ seem Anchor-only, and the LICH_ROOM path must keep its digest unchanged, so any lens/familiar changes should likely be gated behind the same opts.varied/ctx.varied pattern used elsewhere (snakes.lua, powers.lua) to avoid touching the LICH_ROOM-only logic. His direction for the lens-as-familiar is clear: it persists, floats and re-aims at snakes, isn't created/destroyed constantly, doesn't live forever, and doesn't attack every snake unless certain conditions are met.

He also wants snake spawns timed to avoid moments where the lich fires 3+ skills at once, balancing action and calm. These are concrete implementation requests where the feel judgments are his and my job is to build it, verify mechanically, and hand it back. I should start by reading port/lens.lua, port/powers.lua, and port/snakes.lua along with the relevant RECORD rounds (50, 52, 55) to understand the existing wave/bout/group-attack design before making changes myself rather than delegating to another agent.

I should check if the generated copy under renderer/admin/games/lich-survivors diverges from its source, since any hand edits there could represent the "unlock version" I'm looking for. Let me diff the port, main/boot, and sound_picks files to confirm.

I realize lich-survivors is actually the newer source since his sound edits via run-unlock.bat write directly there, so the admin copy is just stale deploy output. That means all the game-side changes are already merged in — what's missing are only the site-side pieces like unlock_fx.lua.

I should check git status on sound_picks.lua and the untracked sfx files; I'll plan to commit his sound picks alongside my work at the end of the session rather than now. With that settled, I'm moving on to the main work — lens familiar and spawn balancing — so I need to read through the relevant code and check file sizes.

My changes and sound picks are already in lich-survivors/, which run-unlock.bat serves directly — the site's copy is just an older deployed snapshot. Now checking the lens and spawn logic.

This is a complex system with strict invariants — no power combination should let anything reach zero, and when only the lens remains, it must still defend against every snake. I need to check lens.lua and the lens-related sections of powers.lua, review the bout logic, look at snake waves in snakes.lua, and examine what happens at round 69 when the lens breaks.

Now I want to look at powers.lua in full, all 821 lines, to understand how casts work—bouts, cooldowns, capacity, urgent casts, last resort options—and how the lens ties into it.

Now I'm looking at how the wave logic is implemented in snakes.lua.

I'm figuring out why 3+ skills trigger simultaneously - gestures are one-at-a-time, but rock and lens act independently of the hand, plus rush and last resort effects can overlap with an active gesture, creating these burst moments.

So the fix really comes down to two levers: controlling how spawn waves overlap so the engage zone doesn't get flooded with snakes at once, and accounting for how long snakes take to crawl in from range before they trigger those extra skill casts.

A smarter way to handle this is scheduling waves based on their actual arrival time at the engage zone instead of their send time, keeping expected arrival windows spaced apart so there's a natural rhythm of action and calm. Second, I can cap how many distinct skills are allowed to start within a short window—say at most two active casts at once—letting a third wait unless it's flagged urgent, which keeps the "3+ skills simultaneously" problem in check while still allowing genuine emergencies through.

I also want minimum spacing between different skill starts, around 0.3-0.4 seconds, so they never trigger on the exact same frame and sound off. The overarching goal is to reduce how often urgent overrides get triggered by improving spawn pacing, since the guarantee that snakes can't reach the egg unopposed still needs urgent casts to bypass the cap when necessary.

Now I'm designing the lens familiar: a persistent lens that materializes in the sun shaft when summoned, floating above and rotating to track targets, firing a converging beam that sweeps into a laser at one snake before re-aiming to the next, repeating for a set number of shots or duration before shattering and going on cooldown for later resummoning. It shouldn't attack every snake indiscriminately — in the bout system it should only take snakes when the plan explicitly assigns the lens to handle them.

When the lens is the sole or one of few remaining weapons, though, it should behave differently: attacking more broadly and lingering longer since it has to cover everything alone, so I'm scaling its lifetime based on how many active powers remain. For positioning, I'm placing the lens along the sun ray through the origin, floating in the shaft above the egg at the center of the scene, roughly 3.8 to 6 meters up.

Sunlight passing through the lens forms a targeting cone, and as a familiar it can drift within the shaft to re-aim at new spots. For the urgent rush case, I'm considering whether the familiar should hurry its next shot at the most pressing snake or whether a fresh lens needs summoning quickly, since the old capacity formula allowed multiple simultaneous lenses (up to four at power six) to handle several approaching snakes, but a single familiar shooting one at a time might struggle with that same load.

So I'm thinking the familiar could instead perform group cuts, sweeping one long burn through several snakes at once, which would let a lens-only setup handle packs of five. Estimating the shot timing — roughly 1.7 seconds per shot for a persistent familiar (converge plus sweep, skipping the form phase) — I still need to make sure the zero-reached guarantee holds even when lens is the only power held, which may mean allowing extra lenses to spawn alongside the familiar when the situation calls for it, scaled by power.

I'm now reconsidering the scaling formulas: power as 6 divided by active count, lens capacity as the ceiling of power over 1.5, and cooldown as the plan cooldown divided by power, working through example values to check they produce sensible familiar counts. I'm starting to sketch the concrete familiar design, defining its states starting with "off."

The familiar needs states for forming, idling while floating, aiming as it converges on a target, firing in a sweeping cut, and breaking apart. I'm defining its summon logic — it forms when the plan picks lens or an urgent rush occurs and no familiar is currently alive — and its targeting rule, where it only takes a shot when the plan explicitly grants lens a cast or during urgent rushes, with a lifetime capped by either a time limit or a shot count before it expires.

I'm scaling the shot/time limits with power level, and giving the familiar a lone-wolf mode when it's the only weapon available: letting it rotate smoothly between targets, drift gently within the shaft, and handle grouped cuts across multiple snakes without the usual plan gating, similar to the existing rush behavior for unaccompanied snakes.

Now I'm checking throughput math — snakes closing from ~6 m at roughly 1-1.35 m/s give about 4.5 seconds before reaching the egg, and a group cut can sweep through a 4-5 snake cluster in roughly 3-4 seconds, so a lone lens-only familiar is tight but plausible without relying on the leak power as backup.

To keep the no-extra-weapon guarantee intact, I'm thinking the fallback should be an emergency one-shot lens that spawns only when the familiar is occupied and an urgent snake is unguarded — essentially the old rush behavior reserved for crisis moments or when the familiar is the sole or last-remaining defense, matching the "unless the setup requires it" condition.

If no familiar exists yet, one forms at the cast spot as before, but now persists after its sweep instead of breaking. The minimal design: give the lens record a familiar flag so that when its sweep finishes, instead of fading out it resets to an idle floating state, ready to activate again once it receives a new target.

When retargeted, the familiar enters a re-aim phase: it rotates toward the new spot over roughly 0.35-0.5s, then converges quickly, then sweeps, while its position drifts and bobs slightly as it may reposition within the shaft. Its lifespan is tracked by shots remaining and total age, breaking into shards once it exhausts its shots, sits idle too long, or ages past a max threshold, with summon cadence and reformation governed by cooldowns and whether the lens gets picked again.

I need to figure out how this interacts with the lens-gating logic in powers.lua -- checking free lens counts isn't enough since a busy-but-alive familiar could still let a second lens spawn, so I need a proper "can_take" check that only allows new casts when there's no familiar or it's idle, with urgent rushes able to grab an idle familiar or spawn a one-off extra lens to guarantee the hit. I'm also considering the case where lens is the only weapon available, meaning all bouts default to lens bouts under single-weapon mode.

Extra one-off lenses should spawn in parallel only when the familiar is busy and there are few powers left (≤2 actives), treating that as a special setup requirement rather than normal behavior, while urgent rushes get the same one-off treatment when the familiar is occupied. This does mean lenses will form and break more frequently in the sparse-power case, but that's acceptable since it's dictated by the setup itself.

Should expire after a limited number of shots or idle time so it doesn't linger forever, though higher power lets it persist longer since it's effectively the main weapon then. I'll keep it simple: a shot budget around 3-5 scaled modestly by power (capped near 12) plus a base idle timeout around 5 seconds.

I also need to handle target claiming while shooting, and make sure the idle state doesn't falsely claim a target. If the current target gets taken before firing, I retarget to the nearest free one within 7m, or go idle without consuming a shot rather than forcing it to fire. For aiming, I want the lens to smoothly lerp its look vector toward the new target spot rather than snapping, and when idle it should rest its gaze on something neutral like the floor below.

For floating motion, the position combines a base position plus a bob offset, and each new target triggers a smooth glide (around 1.2s) to a new position computed from the axis height plus a small offset toward the target side, so the aiming angles visibly change. I'm also laying out the shot timing sequence for the familiar: a 0.35s re-aim, 0.8s converge (with a quick 0.12s snap), then the sweep duration, followed by a 0.2s off period before returning to idle.

Separating size growth from shot timing is the key fix here -- I need a distinct age variable for growth and a separate timer for the shot sequence, plus a "formed" flag so growth locks at 1 once complete rather than resetting during subsequent shots. I'm restructuring the update logic so the shot timeline starts fresh at the converge phase for repeat shots, with a countdown "turn" pre-phase where the cone stays off and the look direction slerps toward the new target spot before the timeline advances.

Now I'm handling idle periods between shots: after a shot completes but the familiar still has life left, I enter an idle state that resets all per-shot fields (firing flag, core, cut count, path, group, sound, flare, light) and holds the timer at the form phase so shot visuals stay hidden while it just floats and looks around. I'm also adding a retire flag for when its life finally ends.

To trigger the retirement break properly I need the sweep to reach the 'gone' threshold so shards burst and removal happens cleanly, but that creates a stats bug: counting a retiring idle shot as 'empty' since it never cut anything. I'm restructuring so stats are tallied once at the moment each shot ends rather than at removal, unifying the logic between familiars and one-off lenses.

I'm also sketching helper functions — a readiness check for whether casting now would require spawning beyond the familiar cap, verifying `busy_count` and `free_lenses` usage for power gating, and keeping `hurry` behavior for snakes already targeted by a forming shot.

Then `cast` itself should assign targets to idle familiars first, form a new one if under the cap, or spawn a one-off for urgent cases — otherwise powers should hold off, gated by readiness. Familiar positions spawn along the sun axis with small height/offset variation, and re-aiming repositions them with a brief random-offset glide toward the new target over about 0.8 seconds.

LENS gets claimed on cast and holds its claim while a shot is pending; since familiars only accept plan casts when idle, there's no need for a queue. For pacing, the bout keeps selecting LENS as the next action until it's actually castable, which naturally stalls other attacks until LENS cools down — functioning like a cooldown gate, though I need to check how this behaves under urgent conditions.

For the concurrency cap, I'm defining what counts as an "active skill" at any moment — gesture phases for FIRE/LIFT/BEAM, rock states like ripping or flying, and lens familiars mid-shot or forming, while leak stays passive and ignored. The rule is that starting a new non-urgent skill while two distinct skills are already active should force a wait, and I'm also adding a stagger so two different skills can't start within about 0.35 seconds of each other to avoid sound overlap — effectively capping concurrency at 2 despite the "3+ at once" framing. To measure this, I'm thinking about sampling active skills every tick, counting time spent with three or more active, and tracking bursts where three distinct skill starts happen closely together.

On the spawn side, I want the director to be arrival-aware: currently waves are spaced using shape-based gaps (varying by ONE, PAIR, PACK, SPREAD, STREAM patterns) plus an occasional lull, but since snakes spawn at varied distances and speeds and route around rocks, their actual arrival times at the engage ring spread out unpredictably, causing overlaps. I'm working out an approach where I estimate each snake's arrival time from its route distance and speed, compute a wave's arrival window, and delay the next wave's departure so its arrivals don't collide with the previous wave's busy window.

I realize this only matters while the previous snakes are still alive, since combat kills clear them out, so really I should track arrival windows and tack on a calm gap after each wave ends — bigger waves getting longer calm periods — to create natural rhythm, with some randomness so it doesn't feel too mechanical. For implementation, I'm thinking of adjusting the wave's spawn delay so that the latest expected arrival of currently alive en-route snakes plus the calm gap doesn't exceed the new wave's earliest expected arrival, using the existing per-snake delay parameter to push back the whole wave's timing.

I need to check how distance from a spawn point to the egg is calculated — spawn points likely carry a route field from a Dijkstra-style distance map — and also check the snake's actual speed and how spawn() tracks movement so I can convert distance into real arrival times.

I should also check how the snake's movement speed is actually used in the update logic to see its real units.

I'm estimating arrival times with 8 enemies moving at roughly 1.0-1.35 m/s, factoring in spawn distances of 10-17 meters along the route and figuring out when they'd reach an engagement radius near the egg.

Now I'm sketching a spawn-pacing design: tracking a `busy_until` value representing when the last-sent wave's enemies reach their action window (roughly engage radius plus a bit, where attacks actually happen), so each wave's expected arrival interval can inform when to launch the next wave.

For the gap itself, I'm randomizing a "calm" period after each wave — short (0.8-2.5s) after small waves, longer (2.5-5s) after big ones, with an occasional extended lull (4-8s, ~22% chance) — and shifting the whole next wave's spawn delay so its earliest arrival doesn't undercut that calm window. This means members are technically spawned immediately but held invisible/reserved until their delay passes, replacing the old simple "gap after send" timer with arrival-based spacing. I'm also considering whether the director needs to wait until the current wave is actually underway before planning the next one, since the predicted arrival window should be deterministic enough to plan ahead regardless.

But holding snakes hidden competes with pool availability — with only 8 snakes total, long hidden delays reduce the usable pool. So instead of planning far ahead, I want the director to keep a countdown and only pick/plan the next wave right when it's actually due, computing the needed shift against a `calm_until` timestamp and adding that shift to all the wave's member delays so they stay hidden just long enough to respect the calm window.

Rather than letting the director retry randomly, I'll compute the wave's kind and plan once, store it as pending, and figure out exact travel time from spawn points and speeds — then derive a precise "send at" time as calm_until minus that travel estimate, so the director just waits until then, checking pool availability right before sending.

I also need to define the window's end as roughly one second after the last snake reaches the engage point, since that's when the wave's action effectively concludes — though this assumes attacks are landing on schedule and killing snakes promptly, which adds more uncertainty to timing.

With fewer player powers, the lich moves slower, snakes linger longer near the player, and waves start overlapping — so I want the director to be pressure-aware: if two or more free snakes are still near the approach zone when a new wave would start, delay sending by half a second. That could make things calmer during underpowered runs, which seems fine.

Now I'm working through how to define concurrency limits in the powers module — mapping out which gestures and abilities count as "busy" states (aim, volley, sweep, hold phases, lift knot, beam channel) so the system knows when a skill is actively engaged, and checking what the rock ability exposes for similar busy-tracking.

I'm also figuring out how lens activity should register — if the familiar is actively shooting, forming, or firing a one-off burst, that counts as active. Then I want a start gate for non-urgent casts: only allow a new cast if fewer than two other skills are currently active and enough time has passed since the last skill started, so starts get staggered rather than overlapping — though urgent casts and last-resort casts should bypass this gate entirely.

I'm now second-guessing whether this cap could backfire — making the lich too passive could let snakes reach urgent thresholds more often, triggering more bypass casts that stack up anyway. I want to actually measure this: track moments where three or more skills are active simultaneously, plus urgent casts, last resorts, and snake arrivals, across test runs with all six powers versus fewer powers, to see what "simultaneous" really looks like from the player's perspective — like a beam, a burning lens, and circling rocks all going off together.

I also realize the idle floating lens shouldn't count as an active skill since it's just hovering, whereas its actual shot should. I want to add a separate metric for "3+ starts within a 1-second window" to capture the sound-overlap complaint distinctly from visual overlap. Before building any of this, I should find or write a baseline measurement harness — checking if there's an existing auto-play probe script I can reuse to simulate the lich's full six-power encounter and gather these stats.

I should check GAME.set_manual and how the game API works in game.lua, including GAME.step, GAME.G, and powers, plus how the intro/start sequence triggers automatically versus manually.

I need a probe that records which skills are active each tick, so I'm checking how gesture phase works and looking into the rock, beam, and lift APIs to see what busy/active states they expose.

Actually the real complaint is about the lich using 3+ skills simultaneously with overlapping animations, so I want two metrics: bursts where 3+ distinct skill casts start within a 1-second window, and the fraction of time with 3+ skills visibly active. I can detect cast starts cheaply by polling the per-tick use counts from powers.state() and watching for increments, then combine that with visual activity checks across hand, lens, rock, and lift to determine true overlap.

I'm trying to figure out what counts as a "busy" rock state versus 'rest', then sketching out a probe script that starts the game and calls begin() to get into a testable state.

For the probe logic, I'll set manual mode and loop through GAME.step so I control each tick explicitly, letting the lich either idle or move. Each tick I plan to sample which gameplay subsystems are active (hand phase, lens count, rock busy count, lift held count), track the set of distinct active names, and accumulate time and episode counts whenever three or more are active simultaneously. I also want to detect "bursts" where three distinct subsystems start up within a one-second sliding window, plus track reached counts, last-resort events, and urgent lens triggers, running the whole thing for roughly 18000 ticks to cover five minutes of game time.

For reproducibility across runs, I'm checking how seeding works via LICH_SEED or ANCHOR_SEED so I can fix the random state and compare baseline versus post-change behavior consistently.

I'm planning a probe script that sets a minimum threshold and seeds randomness through an environment variable at drive start, running three trials with distinct seeds for a few minutes each, mixing standing and moving scenarios while estimating per-tick cost and total runtime.

Writing probe script... I need to switch to manual mode, begin the run, and let the walk-in sequence play out before waves start, so I'm checking how the game object exposes things like powers and snakes to make sure I'm referencing the right fields.

This seems quick but the measurements don't quite match what the user described as bursts of 3+ simultaneous skills. My "active" window calculation might be missing effects that linger after the initial action, like fire continuing to burn on snakes after the casting gesture ends.

So the "3+ skills at once" likely means gesture + rock + lens firing together, possibly with the leak aura as a fourth layer, happening a few times per four minutes for roughly half a second each. I should measure this as windows where three or more distinct attacks start within about two seconds, and pair it with spikes in snake kills, since that combination is what reads as "hectic." The fix should cap simultaneous attacks at two, stagger their starts by at least 0.4 seconds, and smooth out spawn pacing so arrivals don't stack.

I need a concurrency gate per attack type to track "busy" state: hand is busy during aim/volley/sweep/hold phases, lens is busy while forming/aiming/firing, rock is busy when its busy count is nonzero, and lift knots stay busy until they burst since the hand continues holding them.

The gate function `room_for(a)` decides whether starting attack a keeps the count of distinct busy attacks at or below 2 and enforces a 0.4s stagger since the last start, excluding quick/urgent casts which bypass this check since they're applied only to non-quick casts like the lens and rock plan casts.

Rushes trigger when a snake gets urgent (within 2.6m) and the hand is busy, escalating to lens-quick or rock-quick attacks — these are the ones causing three simultaneous attacks in emergencies. I want to tighten this so a rush only overrides the cap when the snake is genuinely close, given the quick lens fires within about 0.12-0.9s and I still need to nail down the quick rock timing.

Delaying rushes until 1.9m leaves too little margin for lens sweeps, so instead I should keep rushes but make them subject to the gate so planned casts wait their turn. The real fix for too many urgent situations isn't gating itself (which could backfire by letting snakes get closer) but pacing spawns so a third attack is rarely needed in the first place — the gate just serves as the hard cap when spawn pressure spikes anyway.

Now I'm thinking through arrival-aware spawn pacing: estimating when each wave member reaches the action ring based on route cost and speed, then defining a wave window from the earliest to latest arrival plus handling time, so spawns don't overwhelm the two main attacks.

If a new wave's planned start would overlap the director's busy period plus a calm buffer, I hold the pending plan and resend it once enough time has passed, rechecking the snake pool availability before actually sending.

I'm also adding a post-wave calm drawn by wave size (ONE, PAIR, big) with an extra lull chance, replacing the old fixed gap, since arrival spacing already handles frequency concerns. But I realize that if the player weakens the lich's killing power, surviving snakes linger longer than estimated, so I need a live check ensuring the next wave's window doesn't start until currently active free snakes have actually cleared, not just the estimated time.

I'm thinking through how this affects pacing—big waves like PACK/SPREAD should still create action spikes while calm gaps preserve breathing room, even if total throughput drops slightly. STREAM waves resolve sequentially so their long windows work fine, while SPREAD waves hitting from multiple sides simultaneously need their own handling logic since they don't fit the simple one-after-another pattern.

For the lens familiar system, I'm working out the lifecycle rules: cap at one familiar normally (or more if power level allows with fewer remaining powers), with occasional extra one-off lenses only when urgently needed and no familiar is free. Familiars spawn on cast when none are idle, go through form-converge-sweep on their first shot, and then need logic for what happens to them after that shot completes if they still have life remaining.

Still working out size growth and shimmer timing...

Actually for a familiar I want grow forced to 1 so it stays full-sized rather than animating in, while keeping a brief shimmer flash on wake; I'll set TURN to 0.35s normally and 0.1s for quick re-aims, then handle position by lerping toward a new target spot near the shaft with exponential smoothing, and rework the look direction to ease smoothly instead of snapping directly to the target.

Beyond that, I need to decide how aiming behaves during each phase: fast lerp toward the target during turning/idle (~8-10/s), but a hard snap to the spot during convergence/sweep so the beam actually connects. I also need to handle edge cases — retargeting if a familiar's target gets claimed before firing (going idle instead of counting a shot), only allowing reclaiming while mid-shot, adding a hurry function that fast-forwards a familiar's turn into the quick-fire window, and tracking completed shots in the stats.

For retiring familiars, I'll trigger a burst of shards at their position, and after the sweep I'll add a brief rest delay before returning to idle. On the powers side, I'm reworking the lens cast gate to check `lens.ready()` — whether an idle familiar exists or a new one can be formed — combined with a concurrency check, and updating the rush/quick-cast logic to prefer an idle familiar first, then form a new one if under the cap, then fall back to a one-off lens shot, all handled inside `lens.cast`. I still need to work out the cooldown interaction between a familiar's per-shot cadence and the plan cooldown at different power levels.

There's a design concern though: since the bout picks attacks by weighting deficits, lens familiars might get created and destroyed too frequently if they idle out (4s max) before being reused, so I want to either boost lens weight while a familiar is alive to encourage reuse, or let the familiar act semi-autonomously, hovering and shifting angle to track targets on its own between bout picks.

So the familiar should autonomously pick targets while alive but not every snake — it fires at unclaimed snakes within range on its own cadence (roughly 1.2-2s between shots), avoiding snakes already claimed by the bout's plan, and expires after a shot count or lifetime limit (8-14s). These autonomous shots still need to respect the concurrency gate, counting as a "start" that requires an open slot just like bout-initiated attacks.

A lens cast by the bout spawns the familiar and fires its first shot, then the familiar lingers for roughly 10-14 seconds firing autonomously every 1.5-2.5 seconds at free snakes in reach (gate permitting), retiring after 3-5 shots or when its lifetime ends — effectively acting as its own presence outside the bout's targeting logic, which just means the bout's attacks have fewer snakes left to claim while it's active.

If idle for 3-4 seconds with nothing to shoot, it also retires early so it doesn't linger forever, and there's a 4-6 second cooldown scaled by power before the bout can resummon that lens, keeping the effect from spamming. While it's alive, the bout routes its lens picks to it directly when idle, or queues them otherwise. At higher power (near-exclusive lens use), the familiar's retirement and shot cooldowns relax so it can keep absorbing every incoming snake, with its lifetime extending as long as snakes keep appearing, capped by a capacity limit on simultaneous familiars — and there's a guarantee that under urgent rushes, the familiar fires quickly.

For autonomous target selection, I'm deciding the familiar should claim the nearest free, unclaimed snake within its engagement range, using the existing claim function with a 2-second lens claim. For grouped threats, I'm weighing whether to let high-power lenses perform a group cut through nearby clusters (3+ snakes within range) rather than always targeting single snakes, since lens-alone builds need to handle packs effectively. I'm now figuring out where this autonomous targeting logic should actually live within the lens script, since it needs access to threat data.

Design-wise, I'm sketching a simple API split: powers.lua handles the per-tick autonomous decision (checking idle familiars and cooldowns, picking targets, calling into lens), while lens.lua exposes helper functions like idle_familiar, can_form, cast, set_max, familiar_count, and working to check shot states.

Natural cadence and limited familiar lifetime should already prevent spamming every snake, since threats() only returns unclaimed targets and bout gestures claim them once engaged — so I don't think I need extra probability logic to throttle shots.

Actually that's a real problem — if the bout picks lens while it's on cooldown, it'd stall the whole fight waiting up to 8s. I need plan_pick to skip over attacks that aren't ready yet and choose an available one instead.

Good, so lens exclusion while cooling down works for both choosable and plan_pick. Familiar autonomous shots count as lens uses, pushing the weight balance so bouts favor it less, and they also need to respect the hand/rock concurrency gate before firing. Given this added complexity, I need to re-verify the guarantee against snake intrusion using the burst probe and the guarantee sweep tests to confirm nothing reaches the egg.

I should find that sweep script to reuse later, and double check the LICH_ROOM digest stays unchanged — the familiar logic must only activate under varied conditions, without introducing new rng draws into the non-varied path. The three.js web parity should hold since rounds past 40 are Anchor-only anyway. For sound design, lens_form, lens_charge, lens_fire, and lens_dissolve should trigger appropriately for both normal and familiar-triggered shots, resetting focus_snd each time without needing an extra "turn" sound.

Visually the idle lens should stay subtle — light off, rim shimmer low, floating with minimal cone/patch visibility. I'm settling on familiar lifetime of 9-14 seconds, 3-5 shots per summon, and a 5-8 second cooldown between summons so it isn't destroyed and recreated too often.

Now I'm starting to write the actual code changes in lens.lua, beginning with the LE.create modifications to make the lens behave as a floating familiar that persists after forming instead of being created and destroyed per attack.

I'm working through how the familiar glides and reorients toward its next snake target, gathering light before cutting again, repeating until its shots or lifespan run out or it sits idle too long before breaking apart — with powers.lua controlling the pacing and deciding whether it attacks every snake only when it's the sole or one of few remaining weapons. I'm setting up a separate RNG stream seeded for familiar-specific draws like lifespan, shot count, and glide timing, while noting I need to rework how spawn() draws from the RNG now that familiar spawns happen less frequently and the draw order will shift.

I'm now sketching out the familiar's state fields — shot counters, lifespan, idle flags, rest timers, position, and look target — and starting the per-frame update logic that ages the familiar and handles its idle float behavior, drifting toward a resting point and orienting its gaze downward when not actively attacking.

For retiring an idle familiar past its max idle time, I'm working through how to force it into the "gone" path by faking its sweep timing so it jumps straight to the burst/invisible state, marking it as already counted (no stats impact) and flagged as leaving so the rest of the sweep logic cleans it up properly.

I'm checking the removal timing versus when the beam actually goes off — the actual cutoff should happen once sweep_t exceeds dur+OFF, before the full FADE window, and only when the entity isn't already in a leaving state.

But I realize there's an ordering bug: the "gone" fade value gets computed early in the update loop, before my transition check, so it could trigger a shard burst prematurely on a tick where the familiar should just continue normally. I need to move the familiar transition check to happen right after the time increment, before gone is calculated at all.

Now I'm sketching the to_idle function: it tallies stats, releases the core, stops sound, hides visuals, resets idle flags, and increments shot count, clearing all per-shot state like fired/core/path/group. Then I'm deciding whether retirement should happen immediately once shots or age limits are hit, or after a short idle beat — leaning toward immediate retirement for simplicity.

I'm also noting the light pool logic: familiars and one-off lenses share a limited set of lights, grabbing and releasing them as needed, with the system already handling cases where none are available. Now I'm starting to write the shoot() function that initializes a new shot on an idle familiar, setting the aim ring, side, and duration based on speed.

Still writing shoot logic...

Still refining look and position easing...

I also need the idle branch to reset visual state like scale, visibility, shimmer, cone/patch, and light intensity when a familiar goes idle. For retargeting, if no target is found a familiar should fall back to idle without counting a shot, so I'm adding a no-shot flag path in to_idle, while being careful about where retarget gets called when q.s is nil.

For bookkeeping, I'll track whether a shot was already counted on a familiar before it's removed, so stats only increment once. I also need to design the public API for familiars: setting a max count, checking readiness (idle familiar or free mesh available), fetching an idle familiar above some rest threshold, and counting currently alive familiars.

Beyond that, I'm sketching how casting should route — prefer an idle familiar, otherwise spawn a new familiar if under the cap, otherwise do a one-off quick cast, falling back to nothing if none apply. Group casting works similarly, routing to an idle familiar or forming one around the group, and autonomous casts from powers should check for an idle familiar with sufficient cooldown before shooting from it.

Autonomous casting needs its own narrower entry point that only fires from an existing idle familiar rather than spawning. I'm also reasoning about stagger timing so simultaneous familiar shots don't double up their sound cues, and about how the power level dynamically caps the maximum number of familiars. For familiar lifespans, I'm setting different shot counts, lifetimes, and idle timeouts depending on whether the power level is below or at/above the threshold that unlocks extra capacity.

For autonomous shooting cadence, normal-power familiars fire on a randomized cooldown when idle and a free target is within engagement range, while strong familiars get a much shorter cooldown — I'm checking whether cadence plus lifespan limits alone are enough to prevent them from attacking every snake indiscriminately.

The bigger question is whether these autonomous shots should run independent of the bout system, since the familiar acting on its own introduces a parallel actor that could clash with the owner's intent to avoid too much simultaneous activity. The concurrency gate caps attacks at two at once, and since the lens familiar requires no hand gesture, a gesture-based attack plus an autonomous familiar shot together would still respect that cap.

Still writing concurrency gate logic...

I need to mark last_start at each actual gesture start event, and decide whether the "start" counts as the aim phase beginning or the cast itself, plus account for a hold phase after casting that still counts as being at work.

For the non-quick path, I need to also fail room_for checks, but I realize the hand's own previous gesture (still in hold when chaining into a new one) shouldn't count against the new gesture's room check, since the hand can only hold one gesture at a time and the old one is being replaced.

I should apply room_for similarly for lens casts, rock casts, and familiar autonomous actions, while letting quick/urgent cases bypass the gate entirely. I'm also setting a 0.4s minimum gap between any two gesture starts so nothing fires at exactly the same tick.

Now I'm turning to the snake spawn pacing logic, sketching the activation radius and handle constants and how busy timing gets tracked per tick for live free snakes nearby.

I need to check whether there's a `free` helper already defined (like api.free) checking pooled/delay/dying/fx/burn/coil/sink states, rather than inlining those conditions myself. For the planning loop, when nothing is pending I pick a spawn kind, generate wave points, and compute each member's relative arrival time factoring in route distance, activation radius, and speed with a calibration constant — then store the pending plan with its timing window before sending.

On send, I update busy_until based on the window's end, then draw a calm/lull duration depending on kind to schedule when the next wave can be planned, deferring it until busy_until plus that calm period has elapsed.

The old `gap` value from plan_wave_pts can probably be dropped in this new scheme since timing is now handled by busy_until and calm. For streaming-kind waves the per-member delays already stretch the window naturally, which is good; but I need to consider the case where a wave lingers longer than expected (e.g. a slow lich), extending busy_until after the next wave has already departed based on the earlier estimate — meaning its snakes could still be in transit when that happens.

To handle this, I'm thinking of making the send check adaptive: at the moment a wave is about to depart, if there are still free snakes within ACT_R+1 (lich lagging), delay the send slightly and push busy_until forward, so pacing adjusts dynamically rather than relying purely on prediction. For the calibration factor K, I plan to log predicted vs actual arrival times at ACT_R across many snakes to measure the real ratio before fixing its value, starting by instrumenting the spawn logic to capture wave info.

Next I want to check how `snakes.lua` computes `free` and distance-to-egg, along with the relevant api fields, and confirm that `api.send(kind)` and the forced-send path (triggered by F9/F10 via DIR.force) still call send_wave(kind) directly and bypass the pacing logic for immediate forced sends.

Baseline from two seeded 4-minute runs: 3+ simultaneous attacks occur 2-4 times (~2.4s), 3 attacks within 1s happen 1-2 times, and 12-18 lenses get made/broken — matching the expected bursts and giving concrete targets to beat. Next I'll build the snake helpers for pacing.

I realize `free` is defined after `direct()`, so referencing it there won't work due to Lua's scoping rules. I'll write my own inline helper function checking that a snake segment isn't pooled, delayed, dying, burning, sinking, affected by fx, or coiled, then use that to locate the egg's position on the cave.

Now I want to measure actual versus predicted travel time to calibrate pacing. I'll add a predicted arrival timestamp per snake and log the actual time when distance to egg first drops below the activation radius, so I can tune the constant against real data. This means editing the wave-pacing logic in snakes.lua so that waves are timed by when they arrive at the activation radius rather than when they spawn, deriving each wave's arrival time from its points' distance to the egg and current pace.

Still writing pacing logic...

Writing wave scheduling logic...

I'm reasoning through the hidden-wait approach: spawn snakes immediately with delays so they stay invisible at the edge for the wait duration, reserving pool slots until the next wave can be planned. This keeps things simple even with waits up to ~10s, though I need to check whether forced test triggers (F9/F10) bypass this pacing or go through the same paced send_wave path.

For live-lag correction, I realize I can extend the hidden delays of already-spawned-but-invisible snakes whenever busy_until gets pushed out further, rather than letting a pre-planned wave become stale.

But I should avoid planning too far ahead, so I'll cap the next-wave scheduling to roughly 7 seconds before it's actually needed, using something like max(0.3, busy_until + calm - clock - typical_travel), so the wait gets computed close to when it matters for better adaptivity.

For the live extension of lingering time, I need any delta increase in busy_until to shift the delays of all hidden, unpooled snakes waiting in reserve — including tail members of the current wave, which is fine since calm is extending anyway. I should also check that the game's ending/hold logic isn't affected by this, and verify the overall send rate doesn't starve the game by comparing snakes-per-minute before and after the change.

I'll calibrate ETA_K through measurement, then move to writing the actual code changes starting with snakes.lua.

I've got the plan: pace spawns to arrivals, cap concurrent attacks (with emergency casts exempted), and make the lens behave like a familiar that tracks and locks onto snakes. Starting now with the spawn pacing changes.

The snav branch corresponds to varied mode with opts.nav set to snake_nav, which is exactly the path the game uses when LICH_ROOM isn't set, so the direct branch never runs in that case — meaning I can safely edit both without affecting digest behavior. I'll make the edit now.

I'm checking the hold loop logic — it only extends the delay when the calm period would otherwise start sooner than 0.8s after a lingering snake, so shifting hidden snakes relative to busy_until plus calm should preserve their intended timing. But I need to verify how hidden members are affected by that shift.

Everything seems consistent: pending wave members stay hidden until their wait elapses, and the calm value used for the next wave is drawn fresh after each previous wave, starting at 0. Now that the logic checks out, I should move on to implementing the ETA accuracy probe, then update the gate and familiar handling in powers.lua and lens.lua.

I'm planning the lens.lua edits, starting with adding a "familiar" variation system that uses a seeded RNG to control egg frequency and strength based on the game's flow.

I'm working out the spawn logic for familiar creatures—tracking their count, giving them a "home" position in the shaft to glide toward, and setting fields like shots, max shots, lifespan, age, and look/position targets. Now I'm drafting the shoot function that lets idle familiars fire new shots.

I need to make growth skip the ramp-up once a familiar is fully formed, so I'll track a "formed" flag that locks grow at 1 after the first time q.t reaches FORM, rather than recomputing the smoothstep each frame. The shimmer alpha then blends grow fade-out, gone state, and opacity contributions together.

For the big-size jump, I'm smoothing q.big toward a target with exponential easing so familiar scale changes aren't jarring, while leaving non-familiar size handling untouched to avoid affecting room layout. Now I'm starting to write the to_idle transition function...

Refactoring the stats logic into a shared count_shot function that marks a shot as counted and updates the empty-shot tally, then calling it both at removal time and inside the new settle function so a floating familiar's shot gets properly logged when it ends or never began.

Still working out the leave timing math... I'm checking that the light intensity resets on removal, and verifying the sweep timing lines up so the shard burst and fade-out trigger correctly before the object gets cleaned up.

Now tracing the main update path after leave fires: confirming the fired/core/sweep flags skip the right branches, and checking whether `focus_snd` gets properly reset between shots so the lens charge logic doesn't misfire on the next cycle.

Continuing through the familiar's age/timer update, I'm tracing when it settles after its shot sequence finishes and breaks if not strong and out of shots or life, then handling idle timing thresholds that trigger leaving depending on strength and age.

Idle familiars go through float_idle for positioning and visuals before skipping the rest, while active ones lerp smoothly toward their target position. I'm double-checking that the per-frame timer update applies to idle familiars too, but since shoot() resets it, that's harmless, and confirming the reclaim-snakes check safely skips when there's no stored shot data.

Writing float_idle logic...

That's a bug since removing lenses shifts indices and causes phase jumps for bobbing motion; I need familiar lenses to use a stable stored phase instead of their list index, so I'll add a fallback that picks `q.ph` when familiar, otherwise `i`. I'm also adjusting how the familiar orients toward its target, using a different lerp speed depending on whether it's converged, so it turns toward its spot then holds steady.

The cone's visual direction is computed independently from the spot position, so the lens orientation lagging behind doesn't actually create a visual mismatch — the beam always points correctly at the floor patch. I'm also checking the position update logic to confirm familiars glide toward their target position smoothly, and verifying the retarget function handles the case where a familiar's target is lost before firing, settling it instead of continuing to fire.

But I spot a bug: after calling settle to mark a familiar idle, the code continues using fields that are now nil, like trying to check if a shot is free when the shot reference itself is nil — that will throw an index error. I need to add a check right after settle to jump past that logic when idle is set, though I have to be careful with Lua's goto rules, since jumping into the scope of a local variable declared between the goto and its label is forbidden.

Luckily the existing code already does this safely because the label sits at the very end of the block, right before the closing `end`, which exempts it from that scoping restriction — so the pattern is sound. I also need to verify all other call sites that reference the shot field are properly guarded against nil before calling the free-check function, and it looks like most already are, aside from the one spot I'm fixing.

Now I'm confirming that the removal logic for sweep timeout correctly swaps in the new shot-counting call while skipping already-counted familiars, and tracing through the cast API to see how it spawns or reuses familiars and falls back to a quick cast when no slot is available.

Adding more methods...

For non-fired turns, time jumps forward so the turning-look lerp keeps moving quickly once convergence starts, and this applies equally to familiars. Stagger for new lenses is handled in spawn(), while shoot() relies on the gate's start gap instead. I still need to check shard burst sizing and light retention for idle familiars.

Now I'm working on the autonomous familiar shot logic in powers.lua, where idle familiars periodically take their own shot between the main cast bouts when the lens is one of few active attacks, checking cooldown, room, and nearby threats before firing.

I need to add the familiar's cooldown field during settle initialization, and think through how `strong` mode (power ≥3) scales up the number of familiars and lets them target groups of threats rather than single snakes, tuning capacity per tick.

For casting routing, I'm checking: if an idle familiar exists, it shoots; otherwise if familiar count is under the cap, a new one spawns. The capacity on multi-target casts needs to respect how many familiars can actually take a target (idle ones plus room to spawn), otherwise a two-target cast might try to assign a second target with nothing available to handle it.

I'll introduce a `lens_room()` helper that chooses slots or free_lenses based on whether the mode is varied, keeping the non-varied path untouched, and leave the rush and fairness paths as they are since quick casts and old logic don't need changes. I also want to add a summon cooldown so a bout can't immediately re-summon a familiar after it breaks, tracking a `lens_back` timestamp when the familiar count drops.

To avoid the bout stalling while waiting on that cooldown, I'll make plan_pick skip to an alternate candidate from the available set if the chosen one isn't ready yet, and rely on PLAN_QUIET to end the bout gracefully if no casts occur in time.

I should define a resting-check helper so plan selection naturally excludes the lens when it's cooling down with no familiars active, which also means familiar autonomous shots count as uses and push bouts toward choosing it less often — exactly the balance effect I want. Now I need to place this gate in powers.lua right after G is defined.

Writing room_for function...

I'm confirming try_gesture's hold-case only fires when there's no active channel, and tracing through the other hand states (aim, volley, sweep) to verify try_gesture isn't invoked there. I'm also checking what counts as a rock's "rest" phase versus active phases for the busy_count logic, and confirming the leak/aura effect stays uncounted since it's passive.

Now I'm patching the rock-cast condition to also require `room_for(rock)` before spawning, and similarly adding a `room_for(ab)` check to the gesture-blocking condition in try_gesture_v. I'm also considering whether the rush paths (lens-quick, rock-quick) that trigger during emergencies should be throttled, though better spawn pacing upstream might just reduce those emergencies naturally — I'll track quick-lens and urgent-count metrics to see.

For the familiar's autonomous attacks, I'm confirming its pacing feels right: cooldown 1.2-2.4s between shots, lifespan 9-14s, and 3-5 shots per spawn — that should be enough restraint without needing extra filtering. Moving on to writing the lens.lua edits now.

I'm trying to figure out why the heredoc is throwing an unexpected EOF error, wondering if a stray quote or apostrophe in the content is breaking the quoted delimiter early.

Rather than keep debugging the heredoc syntax, I'll just write the python script to a file using the Write tool and run it directly instead.

I'm double-checking variable declaration order and scoping, making sure things like clock, active, and axis_at are defined before they're referenced elsewhere in the code.

Now I'm worried about the `goto next_lens` jump used for early-exit handling — specifically whether it illegally jumps into the scope of locals (L, m, UU, t_form, gone, grow, size, ph, lp) declared between the goto and its label, which would violate Lua's scoping rules for goto statements.

I recall Lua's exception that a label at the very end of a block, followed only by void statements, is treated as outside those locals' scope, so since the existing code already relies on this pattern for its own `goto next_lens`, my added goto follows the same safe precedent. I'm also checking that `settle_now` handling, the cone visibility reset in `settle(q)`, and the familiar block's post-settle logic all behave as expected.

Tracing further: when `leave(q)` fires at shot-end, it sets `q.leaving=true` and `q.idle=false`, so the idle-timeout branch in settle() gets skipped, and `fam_count()` correctly excludes the departing member since `q.leaving` is already flagged. For the main non-leaving path, position lerps normally, and the light intensity sweep correctly zeroes out during the turn phase since both `sweep_t` and `t_conv` are negative. I'm now tracing the lifecycle of a newly formed familiar's first shot, following it through FORM, converge, sweep, and into settle.

For quick-cast familiars, I'm considering whether the lens should glide to a new position while firing — the look-lerp turns fast with k=25, and the beam tracking should still look fine even if the lens drifts slightly, so I'll leave `new_place` active regardless of quick-cast rather than special-casing it. I'm also confirming `rng.sign()` is already defined and used elsewhere for spawn side selection, and now checking the resummon timing condition, which compares the lens's own clock against `resummon_at` inside the cast logic.

Now I'm working out strong mode: when the familiar cap exceeds one and a bout targets two enemies, the first shot should go to an idle familiar if one exists, and the second should spawn a new familiar if under the max count. Then I'm revising powers.lua — adjusting the targeting cap logic so varied casts check lens slot availability instead of free lenses, adding a gating check so varied group casts bail out when no slots remain, wiring up room_for and last_start gating after defining G, updating try_gesture_v and start_gesture to mark gating properly, and making the lens section update familiars per tick so planned casts check slot availability and room_for together alongside each familiar's own shot logic.

Still writing patch...

I'm checking that start_gesture's started() call stays harmless in the non-varied path, since room_for short-circuits early and last_start never affects the digest there. The familiar-only behaviors like set_familiars, resting(), and choosable all remain gated to the varied case, so nothing leaks into the other branch.

For the lens logic, strong is correctly scoped from the tick-local actives, and my added else branch properly falls back to the familiar's own shot whenever plan_pick() picks lens but the cast conditions aren't met — preserving plan_pick()'s existing side effects. This all looks consistent with the non-varied path staying untouched, so I'll apply the change.

The warning count went from 176 to 177, so something new triggered one extra warning even though that `claim(best)` line looks pre-existing. I should diff the warning lists against the previous state to pinpoint exactly what changed.

The js_hypot reference at line 489 is just another expected global warning, so that accounts for the count difference. Now I need to run through my checks: confirming the LICH_ROOM digest stays identical, comparing the burst probe results with seeds 101/202, verifying arrival estimate accuracy, and examining the lens familiar behavior including lenses created, shots per familiar, and lifetime stats.

I'm expanding the burst probe to track familiar lens stats—distinguishing newly formed familiars from extras, shots per familiar, and life—while also logging snake spawn rate per minute and arrival accuracy by comparing each snake's expected ETA against the actual moment it nears the egg, which requires reconciling the global clock with the probe's own timing.

I'm double-checking the escape sequence translates correctly into a Lua newline, then running the test with seeds 101 and 202.

I realize the heredoc through bash halved the escaped backslash, turning my intended literal '\n' into an actual newline in the Python source, which broke the Lua string literal. I should use the Edit tool to fix this directly instead.

The simultaneous-start problem seems fixed now, but I'm puzzled by seed 101 showing two starts within 0.15s when START_GAP should enforce 0.4s separation—something must be bypassing that gap check, possibly through urgent gestures or a counting mechanism tied to ignition events.

Oh, I see it: my "starts" probe counts uses-increments, which fire at the cast moment (post-aim) for gestures, while the actual gate's started() marks the aim start instead—so these can overlap within 0.15s even with a proper 0.4s gap between aim phases. That's a minor artifact rather than a real problem, since visible arm-raise starts are still staggered; it just means a fire moment can coincide with another gesture's start, affecting sound timing slightly (happened twice in 4 minutes vs 0-1 baseline). I'll leave that alone.

Looking at the other metrics: familiars dropped to 5 in 4 minutes (from 12-18 lenses), each with 1-3 shots and 6-13s lifespans; overall activity calmed down with 2-at-once time shrinking (17-20s → 7-11s) and 0-at-once time growing (118 → 136-141s), total casts falling from ~69-71 to 53-54, and fewer snake waves too.

Now I'm wondering if the game's gotten too calm overall — the owner wanted both action and calm moments, not necessarily an overall reduction. Casts suggest roughly 23% fewer snakes killed, and arrivals now run about 18/min, though I never measured the baseline arrival rate to compare properly. I'm considering tightening the calm-phase durations and reducing the new HANDLE delay from 1.5s to 1.0s to restore some density, then re-measuring to confirm the 3-at-once cap still holds at zero except during emergencies.

Emergencies are currently at zero, so there's room to tighten pacing toward ~60+ casts while keeping that safety margin intact. ETA accuracy looks solid — mean error around -0.1 to -0.2s with |err| under 0.31s, so ETA_K=1 seems fine as is. I still need to visually verify the familiar's angle-changing targeting behavior, and check the strong mode and guarantee sweep across subsets, but pacing tuning comes first.

Big improvement: simultaneous attacks and overlapping starts are now eliminated, with familiars making 1-3 shots each lasting 6-13s. It's a bit too calm though (53 casts vs 70 before), so I'll tighten the calms slightly and re-measure.

Casts 61-72 land back at baseline density with no 3+ simultaneous occurrences, confirming seed 101's "2 attacks within 1s" result holds since the 0.4s gate between aim starts and casts still allows three distinct cast moments to cluster within a second without exceeding the cap.

A gesture's release still happens close to another sound's start even if the start itself is gated, so I'm considering blocking non-gesture starts entirely while the hand is mid-aim, letting the gesture claim its release moment cleanly, and resuming others only after a cooldown post-release.

Reconsidering what actually matters here: avoiding three simultaneous skills is mostly solved, and the main residual issue is minor overlap in attack starts. I'll just mark the release itself as a "start" event for spacing purposes, leave the aim phase unrestricted, and re-measure the results.

Density is back to normal (61-72 casts) with no 3+ clustering, but a gap remains: a gesture's release isn't spaced from other casts, allowing three sounds within 1s. I'll fix this by treating the release as a start event too.

Looking at seed 303, there's an emergency case where three quick-lens shots fire simultaneously in 0.3s — that's acceptable as a guarantee path. I'm also checking the familiar lifecycle pattern: formed, fired once, idled 3.5s, then broke — this partially matches the "spawn/despawn per attack" behavior, but the idle timeout feels short; maybe it should last longer so familiars aren't recreated as often.

I'm thinking I should stretch IDLE_MAX to something like 5-6s with life around 10-16s and 3-6 shots per familiar, since the current average of ~2.2 shots per familiar is dropping lens output from 12-18 per 4 minutes down to just 6-8. A 10-16s lifespan still feels reasonable since it won't persist indefinitely. I'll try bumping IDLE_MAX to 5.0 along with adjusting the resummon cooldown to 4-7s, then go find the sweep script under scratch/r50 or r52 to test the guarantee logic against power subsets.

Across three seeds, only one emergency triggered multiple protective moments (seed 303: a snake approach fired an extra rescue lens for 0.3s, but the egg stayed safe). Since some familiars still break after just one shot, I'll extend their wait time before breaking, then rerun the guarantee check with fewer powers held.

I'm mapping out the power index encoding — bit 6 corresponds to lens alone, with combinations like beam+lens or fire+lens forming other cases. I also need to check whether the sweep logic should only trigger after the game begins, since waves might not start until after the walk-in event at round 63.

I'll call GAME.begin() and step through the walk-in before writing a new sweep based on begin + set_manual, including both near and far spots (pulling the far spot logic from sweep_far.lua), while keeping track of reached states, quick lenses, extras, and familiars.

Checking the near spot case confirms the guarantee holds. Looking at lens-only mode, 11 familiars formed over 90 seconds with 4 rescue lenses in strong mode seems roughly consistent, though I'm second-guessing whether the rescue lens count actually fits the lens-only scenario.

Since 11 familiars were produced, the rescue quick casts must have come from the familiars themselves via quick shots, which checks out. Now I need to move on to analyzing the far spot.

I'm checking the guarantee holds at both test spots, and puzzling over the case where lenses are off but familiars still get created—since lens.update runs regardless of the on/off state, a familiar could persist idle and still count as "made" even with no power held.

Thinking further, removing the lens power should kill a floating familiar promptly instead of letting it idle out—so I want to add a dismiss step that makes idle familiars leave immediately and shooting ones retire after their current cut finishes.

Then I should check that the ending sequence, which removes all powers, triggers this same dismissal so no familiars linger. After that, I want to do a quick visual check by filming the familiar behavior, looking at how earlier short headless captures were set up (like the shatter film script) to reuse that approach.

I confirmed the guarantee holds from the far spot. I found one gap—familiars should disappear when lens power is removed (or at the end), not linger until timing out—so I'll fix that and then test it.

I'm thinking about how to film the familiar — needing multiple shots in a short window since the normal familiar requires at least three powers, and checking whether the familiar floating up in the shaft would actually be visible within the game's room camera view.

Rather than one long capture, I'll wait for a familiar to form and film just its ~12 second lifespan at 640x360, sampling every 3rd frame to get around 240 frames, then encode to mp4 with ffmpeg at 20fps to keep rendering light on his PC. I'm considering holding lens, fire, and beam (three actives, giving a normal familiar) and triggering a stream wave so there are consistent targets for its autonomous shots, plus maybe a secondary close-up camera angle from beside the shaft to catch the lens turning.

Writing capture script...

I'll output to scratch/s16/film_room/, convert with ffmpeg at 20fps, and deliver as rounds/80-familiar-pacing/ with an index.html containing the video and numbers, following RECORD conventions. First I should verify the dismiss change compiles before running the film capture.

I'm tracing the snake's behavior at 13.2s — it goes idle because leave() sets idle false, then breaks around 13.7s once its lifetime hits the life threshold while idle. Only two shots fired total, since it floated idle for long stretches (3.9-5.9s, then 8.2-13.2s) with no targets found.

I'll check a handful of frames visually to confirm the lens turning in the shaft, building a contact sheet with the tiling tool at intervals like frames 1, 40, 80, 120, 160, 200, 240, 280.

I'm tracing the familiar's motion through the sequence - floating in the shaft, gathering, firing, idling near the egg-like disc, then converging toward the second snake before eventually breaking apart into shards. The HUD icons stay visible even though the hide call was made, which seems like a minor inconsistency worth noting as I look at where the cone starts forming.

The lens glides noticeably between frames during the firing moment, shifting from the shaft center toward the right with an upward angle, which reads fine as a change in orientation for the handover. I'll encode the 294-frame film into an mp4 using ffmpeg at roughly 20fps, capturing both the main room view and a short close-up from beside the shaft to better show the turning motion.

The frame sequence checks out: the familiar gathers light, cuts, floats over the egg, turns toward a second snake, floats again, then breaks. I'll also capture a close view from beside the shaft to make the turning easier to judge.

Checking the close-up lens sequence frame by frame confirms the gathering, firing, floating, and turning motions track correctly, with the lens orientation following the cut spot properly. Now I'll encode the two films to mp4 and set up the round page at rounds/80-familiar-pacing/index.

I'm leaning toward making the page self-contained with base64-embedded video clips rather than separate mp4 files, since the resulting size (~4-5 MB) is manageable and it matches the convention of keeping delivered round assets together. Before finalizing, I want to re-run the digest and a quick burst probe to confirm the lens.lua dismiss change didn't break anything, including testing what happens if the lens is removed while a familiar is still floating.

Both views look good — the lens gathers, cuts at an angle, floats flat between cuts, then tilts toward the next snake. Encoding the clips now, then I'll verify the digest after the latest edits and confirm the lens-power test still breaks as expected.

Good, dismiss works now. I should rerun the digest plus the final burst across seeds 101/202/303 with the idle change and dismiss fix to get final numbers, and redo the guarantee sweep near the boundary for confidence even though the idle tweak shouldn't affect it much. I'll run these sequentially in one command since each sweep takes a couple minutes.

The final results look clean: zero snakes reaching 3+ meters across all seeds, no three-starts within a second, no emergencies, and lens usage dropped to 6-8 per 4 minutes from 12-18. Casts fell to 57-61, about 15% below the 69-71 baseline, while arrivals at the 5.5m ring held at 80-85 — I'm now comparing that against the baseline arrival rate to see how much the reduction actually cost in coverage.

I should run the near-guarantee sweep once more on the final code before wrapping up, then round out the page, record results, and commit. The changes belong specifically to lich-survivors rather than the unlock version, which is already handled — deploying to the site itself will need confirmation from him first, so I'll flag that.

With the guarantee confirmed, I'm moving to the round page and the lich-survivors commit—checking which untracked sfx files are actually referenced by sound_picks.lua so I only commit the ones he's actively using, leaving unreferenced leftovers aside.

For the page itself, since CLAUDE.md wants delivery via SendUserFile rather than the Artifact tool, I'll skip the artifact-design skill and just write a clean standalone HTML page, peeking at an earlier round page's style (like round 69) to match the dark theme.

Recent rounds just delivered loose media files directly, so the simplest approach here is to send the two mp4s via SendUserFile along with the numbers in the reply text, no page needed, matching round 69's practice. I should also consider a brief memory update at session end, adding a line to the project log rather than a full rewrite.

Now I'm moving to the lich-survivors commit, which should include his modified sound_picks.lua plus any untracked sfx files it actually references—committing won't disturb the game even if he's running it. I'll check which untracked sfx files are referenced there and bundle just those with sound_picks.lua as his unlock sound picks, leaving unreferenced sfx files alone.

I'm wondering whether the older untracked files like beam_cast_4 through 13 were intentionally left uncommitted from earlier sessions, maybe because the editor generates files on pick creation and removal doesn't delete them. I should verify whether the currently referenced sfx overlap with these leftover untracked ones before deciding what to stage.

He's referenced unlock_land_2, so I'll commit sound_picks.lua plus the five referenced files with "his picks so far", leaving the other 74 unreferenced files untracked as before. I'm also checking whether unlock_pour_2 counts as referenced too, and confirming a snapshot commit is fine even if the game is still running and sound_picks.lua might change again.

I'll commit your 5 picked files (including `unlock_land_2` for the landing sound) along with the round's code, leaving the other 74 old editor leftovers untracked as before.

sound_rooms.lua being untracked seems like a minor oversight from earlier sessions, not something I need to fix now—I'll leave it alone. Moving on to deliver the files to the user.

I should also append a short note to the project memory file about session 16, even though it's already quite large.

The memory file write looks fine. For my final reply I should cover the merge status, the lens familiar's behavior and numbers, the spawn and two-at-once mechanic, the measured table, and what to try next in a normal run—watching the lens, playing, and trimming powers down to two.

I also need to mention that with the lens kept you get multiple familiars, note the site isn't deployed yet and the admin copy needs sync+deploy, and briefly flag tunables he might want to adjust like familiar life.

I need to reconsider the timing: the lens_charge sound currently fires at convergence start as a one-shot, sounding from the lens 0.78s before the actual fire, with duration spanning 1.0-1.17s into the fire. But he wants it to begin precisely when focusing starts and end right before the fire itself.

That suggests looping the sound during convergence and stopping it at fire time rather than letting the one-shot bleed past. Since convergence is only around 0.8s and the file is roughly 1s, there's no risk of it looping multiple times — stopping it at fire would just cut it off cleanly. There's a per-slot fade setting already in the audio system, so I could use that to fade the loop out when stopped at fire time instead of an abrupt cut.

So to end exactly at fire, the stop should trigger fade-seconds before the fire time. I should check how A.loop handles fade timing, and whether the charge event maps to the whole converge phase (lens starting to focus) versus just the final moment before firing, since converge duration varies between familiar re-shots and quick shots. I'm also wondering if the slot editor's ONCE/LOOPS setting per layer is relevant to how lens_charge should be configured.

I notice lens_charge currently has no files, just a candidate, so it's silent for now — maybe he removed his casting_charge files. He wants the effect to span from focus start to right before firing, so I'll implement it as a looping sound tied to the lens position, updating each frame, and stopped just before the fire triggers; since convergence is shorter than the file length, it won't need to repeat.

Actually, a ONCE-marked layer just plays through once and can't be cut short with a clean fade, so default looping layers are the way to go — stopping them at fire_time minus the fade duration lets the fade complete exactly as the shot fires, which works fine even for quick 0.12s converges where the charge barely gets going. The charge duration matches CONVERGE (0.8s) for normal casts, which might just be a cue for picking an appropriately-sized sound file rather than needing dynamic pitch/scaling.

I'm also confirming that "focusing" refers to the converge phase (not the preceding turn phase), and now I'm checking whether the LICH_ROOM path also needs this play-to-loop change, since sound playback doesn't affect the game's rng draws either way.

Writing lens charge loop logic...

Checking the lookup signature works fine with nil fi, and the loop option isn't needed here. For edge cases like lens_charge having no files, A.choose returns empty with no voices, so stopping remains harmless; and the sound editor correctly shows the slot as a loop slot offering "plays once" for its files.

For the fade timing, I should note that marking a layer as one-shot means it plays to completion rather than stopping at fire time — better to keep it looping by default so the stop timing works correctly, and set the fade out so it ends right at the fire moment.

Now for the lens following behavior — the familiar glides toward new positions with a lerp-based movement and turns to track its target with different speeds during convergence versus sweeping. Making this "more loose" suggests softening the motion into something springier and laggier, perhaps using a damped spring with lower stiffness and some overshoot.

The orientation can lag behind the sweep point since it's purely visual — the beam connecting lens to spot still works geometrically regardless of the lens's exact facing. For the player-influence effect, I'm thinking the familiar's position gets nudged slightly toward the lich — pulling in a small fraction, maybe 12%, of the lich's horizontal offset from the shaft axis, clamped to under a meter so it stays mostly within the sunbeam since that's where it needs to gather light physically.

I need to confirm the lich's position is accessible inside lens.lua — tracing through, the context passed into LENS.create is the same one used for powers, and that context exposes get_L, so it should be available. For the loose, drifting motion, I'm replacing the exponential lerp with a lightly-damped spring: a low spring constant around 3.0 with a damping ratio near 0.55 so there's a touch of overshoot, giving that floaty, loose quality during both idle and shooting states.

For the look direction, I'm applying a similar spring to the orientation itself, aiming toward the beam target with a tighter frequency (~9) and higher damping (~0.7) during converge/sweep so it keeps tracking the cut closely, but looser (~3, ζ 0.6) during turning or idle for that overshooting drift. A little lag between the lens's facing and the actual beam ribbon is acceptable and actually reinforces the "loose" feel. I'm also tuning bob amplitude slightly down for shooting versus idle, and noting that the position used for familiars already folds in this bob.

For the pull toward the lich, I want the familiar's resting position to drift lightly toward the lich root (from ctx.get_L()) in the xz-plane, computed as a clamped fraction of the difference between the lich position and the familiar's axis-based base position, refreshed every frame since the lich moves. I'm leaning toward a small pull factor (~0.1-0.15) with a max offset around 0.75m, since the lich is usually close enough to the egg that this stays subtle.

I also want to confirm this change only touches familiar behavior and doesn't affect LICH_ROOM logic, aside from the sound loop which uses its own independent RNG so it's safe. Ready to implement both changes now.

I'll implement `lens_charge` as a sound tied to the light-gathering-to-fire window (shifting the stop earlier if a fade-out is set), make the familiar's movement follow on soft springs for a lagging/overshooting feel, and add a light 12% pull toward the lich capped at 1 m.

I'm verifying that `hyp` and `ctx.get_L` are properly scoped and passed through, and checking where `sweep_t` gets computed relative to the charge calculation in the update function.

I confirm `lp` is defined before it's used, and trace through the leaving state and lens removal logic in the LICH_ROOM path to make sure they're consistent. The hurry mechanic also checks out — advancing `q.t` forward naturally pushes `sweep_t` past the fade threshold on the next frame, so I'm ready to apply these fixes.

I want to verify this headlessly: tracking when the lens_charge loop starts relative to the converge phase beginning, and when it stops relative to the fire loop starting, making sure the fade-out timing lines up so it ends right before fire begins.

For the familiar's loose follow, I'll move the lich around and measure the familiar's offset from its target position to confirm it shifts toward the lich by roughly 12% with a lagging look direction. Then I'll run the digest since the sound-only lens_charge change touches all lenses, followed by a quick burst probe with one seed to confirm nothing's broken — I'll write a probe that holds fire, beam, and lens, sends waves, and waits for a lens shot to trigger.

Static check passed. Now I'll test `lens_charge` using an in-memory file, timing its start/stop against the gathering and fire events under both no-fade and 0.2s fade conditions, and checking how far the lens tracks the lich's movement.

The charge begins at the gathering start and stops on the fire frame, so with a 0.2s fade it's effectively fading out right as the fire happens. For the lean, I'm checking whether the 0.24-0.59m displacement toward the lich includes the spring/bob offset, since position sampling excludes bob but might still include the pull offset plus spring lag.

Checking the lean numbers at position (3.9,1.3) against the pull formula — the dx and dz values roughly line up with a 0.12 pull factor given reasonable estimates for the shaft axis offset. Satisfied this checks out, I want to run digest plus one burst test with seed 101, then film the loose follow motion with the lich moving to verify the looseness visually.

Confirming the charge timing (stopping right before or fading into the fire start) and the lens shift toward the lich's side, I'll rerun the digest plus one burst test to verify nothing else changed.

Since the outcome stays the same visually, I'm now setting up a looser follow scenario where the lich wanders while a familiar floats nearby, captured with a room camera. I'm adding periodic goto moves every 2 seconds to the familiar_film script, using a MOVE flag variant to control the lich's movement.

I'm checking whether the goal set via goto persists through the engine's normal tick stepping, and clearing mover.goal defensively even if it doesn't exist yet. Now I want to check the contact sheet to confirm the lich actually moves and the lens leans correctly.

The lich's position and lens alignment shift across frames, making the lean hard to judge from stills alone—video would clarify this better. I'll move forward with encoding and delivery now.

I should look for the game on the Z: drive, probably by checking MANIFEST.md for something related to emojunky or an emoji gun follow, so I'll start by searching that file since Z: is large.

Not finding it by that exact name, I suspect it might be spelled differently like "emoji junky" or "emojunkie", so I should search the manifest for "junk" or "gun" and check the 2025-2026 code trees as well.

I should search the code folders for directories with "emoj" in the name across different time periods, since emoji-themed games like emoji-aimer, emoji-ball-battles, and emojunky might be scattered across 2022-2025 eras.

I'm noticing the gun's position is drawn using a lagged past-y value from the player, which might explain that trailing "follow" feel rather than an actual separate familiar object. I want to compare the 2019-2020 version against the 2022-2023 version to see if the gun/familiar mechanic differs between them.

In emojunky-one, weapons are held at the player's side rather than floating as a familiar, so that's not a match—he must mean a different game. I'm considering other candidates like emojian, emojifarm!, emoji-game, emoji-aimer, emoji-ball-battles, or Invoker, trying to recall which one has a gun emoji actually following the player as a familiar.

Let me grep across all emoji-related code directories for "gun" paired with follow-like behavior (lerp or damping), and also check the 2024-2025 and 2025-2026 code dirs more thoroughly since a shallow directory search might miss deeper emoji game folders.

Emojunky-one's gun stays fixed at the player's side rather than trailing behind. I'll check the other emoji projects—emojian, emojifarm, the 2017 emoji-game, and the 2024-26 ones—for a gun that actually follows the player.

With so many candidate files, I'll narrow it down by grepping for files that mention "gun" alongside motion-related terms like "follow," "lerp," or "damp" across the relevant Lua/MoonScript/YueScript files.

I'm narrowing it down to two candidates that match "gun emoji following the player as a familiar": super-emoji-invaders' gun class with a parent transform, and emojian's automaton named gun with parent set to player1. I should check both implementations more closely.

I've identified three candidates—super-emoji-invaders, emojian, and emoji-aimer—and will now dig into the first two in detail.

I see automata.gun uses a steering arrive behavior to follow the parent at an offset — this is the familiar gun emoji following the player. I need to read the full automata.lua and the collider.arrive implementation to understand how that offset changes over time.

I'm designing the emoji follower's steering behavior: it moves with capped speed and force, periodically picking a new offset target near the player (slightly to the side and above), and uses arrival steering with a slowing radius so it eases into position smoothly.

I'm getting tangled in the unit conversions between Box2D's meter scaling and pixel forces, but the practical upshot is simple: the mass is small enough that the applied force snaps the enemy to its desired velocity within a frame or two, so effectively it moves at up to 150 px/s straight toward its target.

This creates an "arrive" behavior — moving at capped speed then decelerating within 25 px of the target. Combined with retargeting every 0.4-1.2s, the familiar darts around the player in short purposeful bursts and resettles, which is lively and twitchy rather than a soft spring. Now I need to figure out how to apply this same movement style to the lens familiar, which currently only lightly follows the player — the user wants it to move more like the emojian gun's dart-and-settle pattern instead.

So the "lightly follow the player" was his earlier ask, but now he's pointing to the emoji gun familiar that darts around the player with arrive-steering to random offsets, and wants the lens movement style to match that instead — so I should keep the shaft as the anchor but give it that same darting, randomly-retargeted arrive behavior rather than a steady light follow.

Since the lich mostly stays near the egg anyway, following him should keep the lens within the shaft region regardless. The real tension is that he explicitly asked for "very lightly follow the player" before, but now points to emojian's full-follow model as the reference — these feel contradictory, so I lean toward favoring the emojian-style anchor since that's the fresh, explicit comparison he just gave.

Rather than guessing wrong and burning a round, I'll implement the emojian-style movement with the anchor defaulting to the lich, but add a test key to toggle to the shaft-anchored variant so he can compare live — consistent with his preference for judging visual choices in-engine behind switches.

I'll default to his last explicit placement instruction — light lean around the shaft anchor — but add a switch so pressing a key shows the familiar fully following him like the emojian gun, since that's likely closer to what he envisioned. Now I need to map emojian's familiar parameters onto the 3D scale, starting with relative player size.

Translating emojian's pixel-based offsets into meters: using the lich's ~1.9 m height as a reference, the gun's ±35 px horizontal spread scales to roughly ±1.0 m around the anchor, with vertical placement set above the shaft anchor around 3.8-5.6 m, or above the lich's head around 2.4-3.6 m when following him directly.

For movement speed, I'm scaling emojian's 150 px/s max velocity down to about 3.0 m/s for the lens, with a slowing radius around 0.7 m and an acceleration cap of 12 m/s² so it reaches full speed in about a quarter second, keeping the motion zippy but smooth in 3D.

I'm also thinking about whether the lens should keep darting during a shot — the gun in emojian moves while firing, but for the lens's beam, fast movement during the cut might look jittery. I'll halve the max speed during gathering/cutting so the beam reads cleanly, while keeping the facing logic oriented toward the target.

For the gaze, I'll keep the existing loose spring look rather than switching to arrive-style steering, and skip adding a recoil kick since the flare already handles that visual punch.

Writing the arrive-steering follow parameters...

For movement, I'm computing a steering value as the difference between desired and current velocity, clamping it to the max acceleration per frame, then updating velocity and clamping it to max speed before integrating position.

I'm checking that the familiar's draw logic still works unaffected in lich mode since it uses frng for offsets and the lp beam position regardless of placement. I'm also confirming the lens spawn behavior and tracing where test keys like F3 are handled in the game's input code to find the force-mode switch.

I need to find an unused key binding, so I'm searching game.lua for existing key handlers to avoid conflicts.

I found how `emojian`'s automaton gun moves—random spot-picking plus "arrive" steering for short, decisive darts. I'll port that same logic to the lens (scaled to room units, slowed during gather/cut), and will offer both orbit options (around the light shaft vs. around the lich) behind a test key since it's unclear which you want.

I'm checking whether 'c' is already bound to something, since it appeared in the help line but I didn't see it in the movement keys list. Let me search game.lua for how 'c' is actually used.

Since 'c' seems unused in the help line, I'll bind 'Q' to toggle the lens follow target instead, adding a FOLLOWS table in lens.lua to track the options.

Now I'm reworking the drift function to mimic that old emojian automaton gun-follow behavior: periodically picking a new offset point near whatever it's following, then arriving there with capped velocity and acceleration that slows within a radius, so the lens motion reads more like that familiar-gun movement than a straight tether.

Still writing follow logic...

Now I'm checking what get_L() returns for the lich's position -- likely the root/hips, with an offset for gaze height, and considering that the lich floats so its base y might sit near zero.

That lands around 3.7-4.8m, consistent with the shaft heights of 3.8-5.6m. For speed I'm using shaft-mode offsets of ±1.0m darting at 3m/s around a shifting point, and I need to define the busy flag as active during gathering or cutting phases rather than just idle checks. I should also drop the position spring but keep the spring helper for look behavior, since drift already references sqrt from lens.lua.

I need to wire up P.set_follow/get_follow with LE.FOLLOWS, bind the 'q' key in game.lua to toggle lens follow, and add a HUD line for it. I'm figuring out placement in the fixed-position HUD list — there are free slots around H-191 and H-136, so I'll put 'Q LENS FOLLOWS' at H-136 and update the help line to include Q. I also want to check whether this HUD text even shows when hosted, since G.hud is disabled when HOSTED is true.

I'm checking whether test keys are disabled on hosted builds, since there's a note that hosted mode has no test keys — I need to trace keys_input to confirm the 'q' handler sits outside that disabled region.

The backslash path in the comment is fine since Lua comments don't process escape sequences, and the Write tool applies it without issue. Also confirming float_idle's drift function defaults to full speed when busy is nil.

LENS.LENS_LOOKS is accessible in game.lua as expected. The old spring function remains for look purposes, but I need to verify POS_W/POS_Z removal doesn't break any other usages before applying the change.

I notice a stale comment referencing the old spring setup for position that no longer matches the current logic, so I'm updating it to reflect that the gaze now uses a soft spring while position is handled by the FOLLOW behavior described below.

Now I need to verify things systematically: checking the digest, probing the familiar's motion with its darting speed profile and retargeting intervals, confirming follow mode 1 keeps it close to the lich in the horizontal plane, running a burst probe to make sure nothing's broken, and then capturing films of both modes with the room view of the lich walking.

Looking at mode 0's dart frequency and settle rate, the spot generation rate roughly matches expectations. In mode 1, the max distance while chasing the walking lich suggests the lens lags behind if the lich moves faster than its capped speed.

I should check the lich's actual movement speed before tuning max_v for follow mode -- if the lich moves faster than my current cap, I need to raise max_v above his speed, possibly with a feed-forward term using his velocity rather than just a higher constant.

Comparing speeds: the lich moves at 2.6 m/s while the lens caps at 3.0 (1.5 while cutting), so the lens lags during cuts but is otherwise faster. I'm weighing whether to boost the follow-mode speed to around 4.5 m/s, making it noticeably faster than the lich, similar to how emojian's familiar outpaces the player.

Found that his top speed (2.6 m/s) outpaces the lens's cutting speed (1.5 m/s), causing it to lag. I'll bump follow-him mode up to 4.5 m/s to stay comfortably ahead, then re-measure.

The max distance of 4.87 could occur at the mode-switch moment, when the lens starts far from the lich and travels across the shaft; the average comes out to 0.96 m, and the familiar might also spawn freshly in the shaft before moving toward him.

The 79% figure in mode 1 makes sense since he's walking constantly, moving every 2.5 s, so the lens is perpetually chasing him. Now I need to work through the digest, burst, and film summaries for both modes with the room camera and his walking pattern, then finalize and deliver the answer.

Average distance from him dropped to 0.96 m, with the 4.9 m spike happening only when the mode switches or a new lens forms and flies over. Now I'll run the digest and a burst run, then film both modes while the lich walks.

I'm adding a FOLLOW parameter to the film script so it can toggle the camera lens to follow mode at the start, inserting the logic right after the game powers call.

The follow-him mode keeps the lens positioned above or near the lich across the frames, which looks good enough even if height is a bit hard to judge from the top-down camera. I'll move on to encoding both films, delivering them, recording the 80c, and committing.

I notice the heredoc escaping mangled the file path, halving the backslashes. I'll fix this using the Edit tool instead.

The edit failed since the file was modified since I read it — looks like he's actively editing sound_picks.lua right now, picking lens_charge as the new sound. I should leave that file alone and just re-read RECORD.md to apply my edit there instead.

The edit failed since the file changed since I last read it, so I'll re-read and reapply the fix. I also noticed sound_picks.lua was updated with a new lens_charge_1.ogg, so I'll leave that file alone since it looks like sound picks are being actively worked on.

That filename probably contains hidden control characters that the display isn't showing properly—likely an octal escape and a bell character embedded in the path. I should use Python with explicit byte handling to figure out the actual filename.

I'm verifying that the Windows file path in patch_lens3.py was correctly escaped when written, and confirming the grep output matches the expected double-backslash format.

I need to figure out exactly when the lens should stop moving — likely once firing begins, meaning it should stop picking new target spots and decelerate smoothly rather than halt abruptly, though it's unclear whether this stillness should start right as the gathering/focusing phase begins or only once the beam itself fires.

For braking, I want velocity to decay smoothly like exponential damping with a rate around 6/s, so from 3 m/s it settles near zero in roughly two-thirds of a second — natural and friction-like without an abrupt stop. Starting this decay when gathering begins means it'll be essentially still by the time of the fire for normal timing, though very quick shots would still be braking during the fire itself, which is fine.

Now I'm defining when a shot counts as "busy" — tied to whether q.t has passed the FORM threshold, meaning gathering or cutting has started. I want to add a "hold" state once convergence time is non-negative and the shot hasn't ended, during which drift should skip spot-picking and arrival logic entirely and just apply braking. I also need to make sure the familiar's turn-in-place phase before FORM doesn't get mistaken for this hold state, since q.t starts earlier for re-shots.

Once hold ends and settle/idle finishes, the familiar should transition back into float_idle and resume normal seeking behavior without resuming the old off_t timer immediately — it can just continue toward its previously assigned spot since the anchor offset still applies. I'm also thinking about scaling the bob animation down during hold so the familiar looks still while braking.

I notice there's a small existing bob-amplitude discontinuity between idle and shot states (0.06/0.08 vs 0.04/0.05) that triggers right at shoot(), and I want to unify this with a smoothly-eased bob factor that interpolates between idle, turning, and shot targets rather than jumping.

I also need to keep the look spring tracking the sweep spot during hold, since the lens visually needs to follow the beam even though position itself has stopped. Now I'm writing the drift function in lens.lua to handle smooth braking when firing starts...

Writing drift function logic...

I'll call drift with the condition that q.t has reached FORM, covering gather through cut until settle, and place it before off_t handling so no new spots are created. Setting BRAKE to 6/s gives a velocity time constant of about 0.17 seconds, so a 3 m/s drift decays to zero quickly without feeling abrupt.

I should remove the now-unused FOLLOW.cut reference to keep the documentation consistent, and I'm designing a test probe that checks lens speed stays near zero during the sweep phase and that deceleration smoothness stays within bounds, while also confirming no new spots spawn during the hold when off_t is frozen.

Checking that IDLE_BOB is properly scoped before use in the update path, and confirming the hold condition works correctly for leaving lenses. This looks good to apply.

For familiar shots, I should track speed at key moments: when gathering starts, when fire starts, the peak speed during the cut, and the max deceleration during the hold, plus whether the spot shifts during that hold—and I need to verify darting resumes afterward.

It works — he stays near the fire at low speed, no new embers appear, and he resumes his normal darting afterward. The braking in follow-him mode starts fairly sharp, around 27 m/s² (2.75g) initially, since the exponential drag decays speed by half every 0.115s, which feels like a reasonably abrupt deceleration at the onset.

Rather than that sudden jump, I want to cap the deceleration at the same max acceleration he uses to move (14 m/s²), so it decelerates linearly at that rate until speed drops low enough, then transitions into the exponential tail — more physically consistent since it's using the same force budget to stop as to move. Total stop time comes out to about 0.8s, landing him near rest right around when he reaches the fire.

The lens behaves correctly by the fire, but braking while following the lich hits 27 m/s²—far harder than its 14 m/s² acceleration. I'll cap the braking rate at 14 m/s² to match, since a real body can't decelerate harder than it accelerates.

The 0.04 m/s residual velocity in follow-him mode is negligible, essentially still. The lens staying put during the ~1.9s hold before chasing resumes also checks out as expected behavior.

A quick close-up film from beside the shaft would best demonstrate the stop in follow-him mode, since the user will judge visually in-game. I'll do a short close film in default mode using the earlier setup, roughly a minute.

Comparing frames 0135 and 0145, I notice the lens cone shifts position—first aiming toward the lower left near the lich's feet, then toward the lower right—suggesting the gathering beam is tracking between two different snake targets rather than staying fixed on one.

That left-side snake likely got destroyed by the lich's fire confetti around frame 0125/0145, prompting a retarget: idle briefly, then a fresh shoot() call toward the right snake with new gathering. The jump in lens position (about 1.5 m in 0.5 s at 3 m/s) is physically plausible, and firing at frames 0155/0165 keeps the lens stationary. I'm satisfied with this retarget path and ready to deliver the video, record the 80-degree angle, and commit.

The footage confirms the pattern: steady holds during gather/burn, with one instance where lich fire interrupted a gather, prompting a switch back to darting for another attempt. Saving, committing, and sending this now.

I'm planning the session by figuring out which UI elements to hide by default, keeping only the top-right elements visible like the power icons, while making sure the sound names displayed during gameplay are also hidden.

Next I need to figure out an easy way to test and fix web performance generally, since the engine renders via WebGL/wasm and I need a reliable method like headless Chrome testing without accidentally hitting the live site.

I'm also considering performance differences for the game itself on web: Lua running in wasm is notably slower and WebGL draw calls are costlier than desktop. For an easy test method, maybe an in-engine frame-time overlay or perf log triggered by a URL param would work across both builds, though simulating the web's wasm slowdown from desktop measurements isn't straightforward since Node can't run the Emscripten/WebGL build headlessly. That brings me back to the headless Edge plus local server route, running into the same download-manager interception problem for binary fetches.

Given that any binary fetch pops and gets truncated by his download manager (in both Chrome and likely Edge), the harness needs to build everything as a single file -- wasm embedded as base64 directly in the HTML -- loaded via file:// with all network requests blocked, similar to how the replays-player was set up. I should check those memory notes to confirm.

Given how much ground this covers, I'm thinking about ordering: hide UI defaults first since it's quick, then the hidden-logs line for the site, then tackle performance measurement and fixes, with Steamworks pushed to next session. Before deciding, I want to pull up the relevant memory files on the download manager issue, headless Edge checks, the site redesign front list, hiatus dates, and the log deploy reference.

I'm weighing headless Chrome rendering approaches for perf testing—software rendering via SwiftShader makes GPU measurements meaningless but CPU timing (Lua in wasm) is still valid, so I'm considering using a real GPU backend instead and measuring per-frame CPU timings directly inside the engine.

The bigger question is how to isolate the site's overhead from the game's own web build cost—the site hosts a ~76 MB asset package, so a single-file HTML embed is possible but heavy. I'm leaning toward testing the game's standalone web build (its own wasm + preloaded data) to approximate the game's intrinsic cost separately from the site's compositing overhead, then tracing where time actually goes: the Lua VM executing game logic in wasm.

To make this measurable without manual involvement, I'd add a perf mode to the game that records per-frame timing (update, render-submit) and surfaces it via a URL flag for headless Chrome to capture, possibly intercepting network requests through CDP to serve assets from disk instead of embedding everything as base64.

I'm also second-guessing the download-manager interference risk: if assets are fulfilled via CDP's Fetch.fulfillRequest, there's no actual socket traffic, so a network-level download manager hook likely wouldn't trigger — though it's unclear whether such tools hook at the browser-extension level or deeper at the OS networking layer, especially since the memory suggests the trigger happened even under headless Chrome. The safest documented approach remains loading a single-file page via file:// with all requests blocked.

For the engine build itself, I'm thinking through whether the Emscripten output (JS glue, wasm binary, and preloaded data package) could be inlined into one HTML file by base64-encoding the wasm and data assets and overriding the module's file-locating logic.

But then I notice there's already a replay-player web build for the Lich game — it plays recorded .apr sessions deterministically in the browser using the actual game code. That's an ideal performance benchmark since the input is fixed and reproducible.

I'm checking whether I can run that player headless from a single file with the recording embedded, and whether the engine or replay tooling already exposes perf instrumentation I can hook into.

The download manager blocks the usual local-server-plus-headless-Chrome approach, so I'm sticking with the rule of single-file builds opened via `file://` with all network requests blocked. I'll check what web build tooling already exists, since the replay player is already a web build of Lich.

I'm checking the size of the .data file for the wasm game package, and looking for an existing single-file player build harness in Anchor or the site tools.

I'm startled to see one of the .data files is over 2GB in size — likely stale replay/bake output that's untracked, not something relevant to the admin game package which is only around 76MB.

Setting that aside, I'm turning to the actual performance question: the game runs in-browser via WebGL2, and Lich Survivors is a heavy 3D scene with cave meshes, GI, tube-based snakes, bloom, and lots of particles, so the slowdown could stem from either CPU (wasm Lua) or GPU work. The simplest path forward is building a diagnostic approach — some kind of perf overlay or admin flag showing FPS and frame timing, paired with a deterministic scripted benchmark scene to get repeatable measurements across desktop and web.

Ideally this benchmark should run headlessly so I'm not relying on someone else reporting numbers back to me, which means figuring out how to run headless Chrome with real GPU access to get meaningful timings. That raises the challenge of packaging the site plus the game build into something runnable standalone, since the site normally loads assets via many fetch calls — I'd need to intercept fetch/XHR in-page and redirect them to embedded data instead.

I'm also wondering if there's already a standalone web build of the game, since the replay player looks like exactly that — it runs the game code to reproduce a recorded session deterministically, which would make an ideal repeatable benchmark. But the data file sizes seem suspiciously large, suggesting it might bundle more than just the player, so I need to dig into what's actually slow on web, recalling earlier notes about async shader compilation eating several seconds during boot.

Beyond boot, the per-frame cost matters too: Lua's garbage collector and the Lua-based scene graph renderer doing matrix updates for every object per frame are likely much slower in wasm than native. My plan is to measure native per-frame CPU cost first, since a modest native cost could balloon 2-3x in wasm and drop below 60fps, so reducing Lua-side per-frame work would directly help web performance.

Given the game renders internally at a low resolution, GPU costs should be cheap on both native GL and web WebGL/ANGLE, so the real bottleneck is almost certainly CPU-bound Lua execution in wasm. I want to profile Lua CPU usage per subsystem natively first to find hotspots, then build a simple benchmark/drive script for native profiling plus a corresponding web measurement path.

A pure wasm micro-benchmark in headless Chrome is tricky since the engine likely needs a WebGL context to initialize, and the full game depends on 76 MB of assets for meshes, so a minimal standalone benchmark isn't straightforward. A more practical alternative might be using an admin device where a benchmark can run directly and save its results back to the game.

I'm now checking whether the site exposes an admin-only endpoint for storing diagnostic data, like a debug log or error report route I could read from. I notice there's a report_game_error function in game_host.lua that reports game errors to the server, so I want to look at what endpoint it posts to and whether that could serve my purpose.

This could be reused: have the admin's browser run a benchmark and POST the results, then I read them server-side via ssh — giving real device numbers with minimal effort from him. Going further, I could set up always-on lightweight perf telemetry that records frame stats periodically while he plays and posts a summary when the session ends, though for my own iteration a headless web benchmark is probably more useful, with device telemetry as a complement.

Given the time budget on this session, I should check how the site currently handles game error reports.

I found that the replay player's packages are 1-2 GB each (too heavy to use as a benchmark), while the hosted game itself is about 76 MB, making a single-file build large but feasible. Now I'll check if the site already sends any data from the browser back to the server that a perf report could piggyback on.

I realize I could check the actual events table on the server via SSH to see real perf numbers for 'lich_perf' events, which would tell me whether his admin device is actually being tracked or if he's opted out of analytics.

But the deploy-test-read loop requires his approval every time, which is too slow. I need a local headless Chrome benchmark harness that loads the game standalone via file://, runs a deterministic scenario, and reports frame timing and per-subsystem CPU cost through console messages read via CDP -- though I need to figure out how a standalone Anchor/Emscripten build would actually load its assets outside the site's normal bundling.

I'm realizing the replay player is actually a good reference for packaging a standalone game for web -- it bundles anchor.js, wasm, and a data package together. I should look at how that player's packaging tool works to understand how to build my own standalone benchmark bundle.

I can piggyback on the site's existing browser-to-database analytics channel to get real perf data via ssh, but I still need a local web benchmark for fast iteration. Next, I'll check how the replay player packages a game for the web, since it's the closest existing tool to adapt.

I should delegate reconnaissance to an Explore agent to investigate how Anchor games are built for web standalone, where the player packaging tool is, whether games can build to standalone wasm, the size involved, and how the site's game host loads the Lich game (fetching package files, manifest). I can handle the UI-hiding task myself in parallel while that research happens.

I'm checking how the UI gets hidden when G.hud is toggled off—whether the inventory display still draws regardless, and looking into soundui's draw function in play mode to see if sound names appear visually as a live list while playing.

I'm planning to default the HUD to off even on desktop, keeping H as the toggle, and figuring out the logic so sound labels only show when the HUD is active, the sound tool is open, or the editor is in focus for clicking.

The top-right inventory icons and the click-target dot should stay visible regardless of HUD state since they're core game UI, while the testing overlays (camera labels, debug text) get gated behind the HUD check. I just need to edit `hud = not HOSTED` to `hud = false` in game.lua at the relevant lines.

I made two edits in game.lua: testing text now stays hidden until toggled with H (inventory icons unaffected), and sound labels only appear with H on or while the sound tool is open.

I'm tracing through how hit detection interacts with the draw/update cycle across modes — clicks only register in pause/list mode, so I need to check whether stale hit data from a previous frame could leak into the update call right after switching modes.

To confirm, I'll capture a snapshot screenshot of the default game state and check that the HUD only shows the top-right inventory as expected.

I'll just keep the icons in the top-right and commit to that. Then I'll add the hidden-logs line on the site while waiting for the agent.

I'm thinking through the hidden-logs counter line — a persistent row near the top of the homepage feed that tracks how many logs remain hidden since the hiatus date and shows the last update time, since viewers with post-only access need a way to know logs exist without seeing them.

This should be visible to everyone publicly, signaling the existence and timing of gated content while keeping the actual contents private. I need to figure out the actual data source — counting gated logs stored in the site's gated directory since the hiatus started, and pulling the latest timestamp from those entries.

The line probably needs to be generated during content conversion, added as a synthetic index entry that the front page renders like any other row. Since logs get added via the gated workflow and rebuilt through the deploy pipeline, I should trace through convert.lua, the front list renderer, and the index-building logic to see exactly where to inject this entry and how it should update as new gated logs are published.

I'm counting the gated logs and posts, noting one dated before the hiatus, and trying to figure out how many logs fall since the hiatus started on 2026-09-19, comparing timestamps around hiatus #560 and the first gated item.

"Hidden logs" seem to mean gated logs invisible to non-admins, distinct from sealed/NDA logs which show placeholders publicly. I need to count gated entries dated on or after the hiatus start, find the newest one for a "last updated" timestamp, and then check how the homepage interleaves posts and logs by looking at the index-building code in convert.lua.

I'm thinking about computing hidden logs from gated entries dated after the hiatus start, then writing a synthetic entry into the public index so it shows up in the feed—need to check how write_index shapes entries and how the front page lists posts versus logs.

The synthetic row would look like "57 hidden logs since September 19, 2026, last updated October 14, 2026, 13:41" with no clickable link, dated by the most recent hidden log so it naturally floats near the top as new logs accumulate without being pinned. I should check if the hiatus start date comes from config, and confirm the date display format matches other rows. I also need to consider visibility rules—admins presumably see the full picture including gated logs, so this synthetic row is still meaningful to them.

When the hiatus ends, the count should naturally drop to zero and the row disappears since gated logs get moved to the normal logs folder on reveal. Now I need to trace how front.lua consumes the index to build rows, and look at write_index and front_draw_row to understand how a non-post entry like this would actually get rendered.

The index comes from `data/index.lua`, where the converter adds one extra entry tracking gated logs since the hiatus, dated to match the newest hidden log so it rises with each new addition. Next, I'll check the row shape to see what fields the index entries hold and how the front list renders them.

I need to check how front.lua renders index entries into rows, comparing a log row versus a post row like "#560 Good bye..." with a date. Since a new 'hidden' section type needs to show as a row with text but no link, I should search for "section ==" and the row drawing function in front.lua.

I'm weighing whether to tag hidden entries with a distinct section type like 'hidden' so consumers such as sitemap, search, book, and the logs page can simply ignore them rather than filtering by special casing — but I need to check how each of these actually reads the index, since some may read markdown files directly rather than the shared index.

A cleaner approach occurs to me: instead of adding a risky new entry type to index.lua, I could write a small separate data file containing just the aggregate stats (count, since, updated timestamp), then have the front-end list splice in a synthetic row at the right date position. Since ipairs-based consumers only iterate the array portion, I could even stash this hash-keyed metadata directly inside the returned index table without breaking anything that loops with ipairs — though I still need to check for any `pairs()` or `#index` usage that might get confused by the added key.

But I'm now worried about pack_bootdata.py's line-based parsing of index.lua, and whether both convert_all and the --changed cache path would need updates to compute this stat consistently. There's also a question of whether the VPS's on-site posting flow (server/compose.lua) rewrites the index in a way that would silently drop a hidden_logs key when someone posts from the site itself.

Since the gated markdown files are checked out on the VPS too, running the same convert logic there should keep the count consistent. For rendering, I'm thinking about inserting a synthetic row element into the front_doc entries list representing the hidden logs, similar to how a "newpost" marker is handled — giving it a distinct flag so clicks, hover links, and prefetching don't try to treat it like a real post, and tracing through front.lua's click handling to make sure this row stays inert.

For filtering, this row should only appear when the "logs" chip is active, hiding otherwise. For the text itself, I want to match his exact phrasing — something like "57 hidden logs since September 19, 2026, last updated October 14 at 13:41" — with the date column on the left showing the last update time like other rows, even though it's a bit redundant with the inline text.

I should check whether the gated/admin viewer logic treats this hidden line consistently — the admin is essentially a viewer too, so the line should show for everyone, including within the unlock animation flow that builds the gated posts list.

Book mode and vertical mode are both disabled here, so I don't need to worry about those paths. The gated index merge appears to happen elsewhere, not client-side, so I'll skip that and instead check how works_date_time and the front-end click handling are implemented.

I'll store the hidden-log count, hiatus date, and last-update time as a named field in `data/index.lua`, which existing list-walking code already skips safely, then add a non-clickable summary row positioned by date in the front list. Next I'll check the date format and how row clicks are handled.

I'm designing the hidden details row to avoid the normal `rec`-based fields, giving it its own `hidden` payload and marking it with `_st` and `type = 'details'`. I need to make sure functions that assume `el.rec` exists—like draw_row, id_rect, and front_click—handle this hidden row case early and bail out or branch appropriately so it doesn't break assumptions elsewhere.

For insertion, I'll place the hidden row in front_doc right before the first element whose record date is less than the update timestamp, using lexicographic string comparison since the format sorts naturally. I also need to fold the hidden row's data into the signature so the row rebuilds when it changes, and confirm this won't interfere with admin "view as public" behavior.

Now I need to trace where the `index` global comes from in front_doc — it's loaded from data/index.lua and possibly merged/gated for viewers. I should check whether that merge step preserves the hidden_logs field or only copies the array portion, which would lose it for non-admin viewers.

I'm making the row carry no post record so nothing that opens, links, or unlocks posts can touch it. Next, I'll check how the client assembles `index` since merging for unlocked viewers could drop a named field.

I'm checking that merging gated logs into the index table in-place preserves hidden_logs since table.sort only touches the array portion, not hash keys—so that should stay safe for admins viewing gated content. Now I'm tracing whether data/index.lua gets loaded via dofile from the preloaded boot bundle on web, checking how pack_bootdata.py assembles index.lua into that bundle.

I should check whether the server files that also read index.lua (compose.lua, logs_index.lua, server.lua, sitemap.lua, tags_index.lua) iterate with pairs instead of ipairs—if so, a hash entry could get mistaken for a real record and cause a crash like a nil section field. Let me grep those files for pairs usage.

The server loads from gated/index.lua rather than data/index.lua, so that's fine. Now I'm checking the client renderer for any uses of pairs(index) instead of ipairs.

I'm adding a helper that scans the gated markdown files' frontmatter to count entries dated on or after the hiatus cutoff and find the latest date, then wiring it into the public index writer to append a hidden-logs summary line.

I still need to figure out where the hiatus date should come from—checking Anchor/workflow/config.toml for a hiatus field, otherwise falling back to a hardcoded constant with an explanatory comment.

Since the config lacks a date, I'll hardcode the hiatus timestamp directly in convert.lua with an explanatory comment, displaying it as "since September 19, 2026". I need to confirm the count only includes logs posted after the hiatus began, excluding the earlier gated log from September 3rd.

All gated markdown files at the root count as hidden logs, including private stubs—since they're still log entries that viewers without unlock access can't see. Sealed logs with NDA placeholders remain publicly visible as stubs, so those don't count as hidden.

Writing comment explaining the hidden logs counter...

I'm defining a hiatus timestamp marking the last public post, then writing a function that scans the gated folder, reads each file's date header, and counts entries newer than the hiatus while tracking the most recent one. Now I need to check how date_key formats its output so I can wire this into write_index's public-index branch, appending the hidden logs count and newest date as a new field after the entries loop.

Since the config lacks a date, I'll use #560's timestamp (2026-09-19 02:34:41) as the cutoff, which excludes the gated log from 2026-09-03. Now checking the end of `write_index` and `date_key`.

I need to double check the indexing assumption in the posts-only copy logic, since it relies on entries mapping to specific line offsets, but adding a hidden line only affects the public index path and shouldn't disturb the gated logic. I also need to place the new hidden_logs function after list_md and date_key but before write_index, respecting their definition order.

I'll apply the patch using the Write tool rather than a heredoc to avoid backslash escaping issues.

I'm checking that the newline escape in the Python string correctly translates to a Lua pattern match, and confirming the quoting helper function is defined before it's used in write_index, then verifying where else write_index might get called with a nil path.

Now I should also check whether convert.lua uses CRLF or LF line endings, since reading with universal newlines and writing back with '\n' could silently convert CRLF to LF and mess up the diff.

I should run the converter locally with --changed to regenerate the index and check the hidden_logs line, then figure out what $LUA resolves to in deploy.sh—whether it's lua5.4 or something tied to the anchor.

All lines showing as different is likely a line-ending issue, so I should try diffing with trailing CR stripped. Checking git status on data/ returns nothing, meaning it's either untracked/generated or has no changes, so I need to compare more carefully.

There's now a new line showing 56 hidden logs since the hiatus, last updated at that timestamp. I'm adding a comment in front_doc documenting how this hidden-logs row should appear and behave in the UI, positioned by date so it climbs back up as new logs accumulate.

I'm writing a helper function that builds the hidden-logs row only when there are hidden logs and the setting to show them is enabled, reusing the old element if present to preserve its open/closed state. Then I'm figuring out where to insert this row into the document: locating any old hidden element in the previous doc, then finding the right position among dated rows (before the first row whose date is older than the hidden logs' update time, or appending if none qualify). I'm also updating the signature to include the hidden logs' update time and count so changes trigger a redraw, and treating the row like a normal dated row for layout purposes, including narrow-width behavior. Now I'm adding the draw logic for this row type.

I'm thinking the title should look like a normal post title without hover interactivity, and instead of an id I could place a lock icon to visually signal that the row represents hidden content.

For narrow layouts I'll put the date and lock icon on a second line beneath the title. For clicks, hidden elements should just return nil early so nothing happens, and since no hover state gets set, the cursor will stay as a plain arrow. I also want to double check canvas.lua and main.lua for any places that access `.rec` or similar fields on doc elements without guarding against it being missing, since these synthetic hidden rows won't have the same shape as normal records.

The public index now shows "56 hidden logs since 2026-09-19 02:34:41, last updated 2026-10-14 13:41:15" with nothing else changed. Next I'll update the row in `front.lua`, but first checking whether `main.lua` assumes every row has a post record.

Good, main.lua doesn't touch front row recs directly. Now I'll write the patch for front.lua.

I'm verifying the variable ordering is correct—that `ty`, `ub`, `mf`, `top`, and `sh` are all defined before my hidden block uses them, and confirming the early-return height check and other locals like DATE_W, ID_W already exist in front.lua.

Now I'm also checking other places that iterate over FRONT doc elements for unguarded assumptions about `el.rec`—unlock_fx's loop guards it properly, front_anchor looks fine, and I need to check front_pre_draw more carefully by grepping for similar patterns across the codebase.

I'm tracing through attach's guard condition—it only returns early for log/newpost/doc rows, meaning a hidden row without those would fall through to access rec.slug and likely crash. I need to check when attach actually gets invoked, since it seems tied to _loading or _want flags set during front_update and front_doc, so I should look at front_pre_draw to see if hidden entries could trigger this path.

I'm now confirming id_rect, editable, and toggle are all called only after the hidden-row early return in draw_row, front_click, and front_fold, so those should be safe. The real fix is just adding `r.hidden` to attach's guard condition, after which I want to verify it locally by running the desktop renderer headless, taking a snapshot of the homepage list, scrolling to the hidden element's position, and confirming it renders without crashing.

For the public view without the admin token, the row appears at the top above #560, while the admin view would merge gated items and place the hidden row by date among gated posts and logs. I want to snapshot the top of the page to verify the visuals.

The hidden logs row checks out, and the lock icon matches since gated public rows show yellow locks for book_draw_lock. More importantly, I'm noticing a real bug: the replay player package swept up the entire 7 GB scratch folder because package-web-game.sh doesn't prune `scratch`, meaning anyone viewing a Lich replay page would trigger a 2 GB download — definitely worth flagging.

This feels out of scope for the current task, so I'll spawn a side task for it rather than fixing it inline, since the fix (adding scratch to the prune list) also requires regenerating and republishing replays, which is an outward-facing action I should check before doing.

Now I want to commit the hidden-logs work in the site repo — front.lua and tools/convert.lua — keeping in mind the data itself is gitignored, so a deploy step will be needed for the live site, which I should ask about before running. I also want to add a new section to REDESIGN.md documenting this.

Then I'll shift to performance work. The agent found a single-file build script using esbuild with base64-embedded assets turned into blob URLs, plus a harness that talks raw Chrome DevTools Protocol over a WebSocket, restricting Fetch.enable to only allow page/data/blob requests, and GPU flags toggling between real GPU (ANGLE/D3D11) and SwiftShader. I'm also looking at the site's existing ?perf readout in health.lua, which wraps the update cycle for profiling.

My plan for an easy performance benchmark is to build a single-file HTML version of the standalone web game package (combining the wasm, data, and JS/html pieces, with the ~100MB asset data base64-embedded, excluding scratch files) and override fetch/locateFile to serve everything from embedded blobs. I'd drive it headlessly through Chrome via CDP using the same restrictive Fetch.enable approach, run with real GPU via ANGLE d3d11, and add a benchmark trigger inside the game — possibly via a tiny bench.lua file bundled into the package that the game conditionally requires if present, since I need to figure out how to pass parameters into the standalone build.

But I realize the bigger question is whether to benchmark the standalone build or the actual site-hosted version, since the site adds its own page/composite draw overhead around the game that the standalone build wouldn't capture — so it might be more accurate to single-file the full site build (including the admin game package and site data files) and intercept fetch at the paths the engine's wget/readAsync calls use, which would also need handling the admin cookie for loading the admin game.

Given the complexity of faking the admin state in a headless harness, the more pragmatic path is to profile where the game's own wasm CPU time goes using the standalone build, since that's likely the dominant cost, and separately check the site's overhead via its own perf readout. But the admin game package is 92 MB, which would balloon to roughly 123 MB as a base64 string in a single HTML file — loading that from file:// and parsing such a massive inline script is going to be a real bottleneck in itself.

I'm weighing whether to split the build into multiple files instead, but the harness blocks all requests except the page itself, and even though file:// script includes aren't technically network downloads, the memory notes suggest sticking with the single-file approach. Instead, I could try trimming the package size by cutting unused assets, like the 14 MB of sound files that aren't needed for a benchmark run.

I'm also reconsidering the standalone packaging script that uses Emscripten's file_packager to produce a .data blob loaded via fetch alongside a loader script — in the single-file version I'd need to embed that .data as base64 and override fetch so requests for it return the decoded buffer instead of hitting the network.

For actually running the game on web, package-web-game.sh builds an index.html that loads the engine and game package and runs main.lua, with HOSTED=false meaning it behaves like a desktop build. For benchmarking I need a deterministic scenario — something like a bench mode that starts immediately with all powers unlocked and forces specific enemy waves.

Since os.getenv likely won't work reliably in a web context, I'm thinking of using a file-based flag instead: writing a bench marker file into the virtual filesystem before the engine starts, so both desktop (via env var) and web (via file presence) can trigger the same benchmark logic.

For measuring performance, I need to instrument per-frame wall time using perf_time around update and draw calls, breaking it down by subsystem: snakes, powers, gore, fx, renderer, and HUD. I'll need to locate the main update/draw functions in game.lua and add profiling hooks that accumulate timing per section when benchmarking is enabled.

Since GPU time isn't directly measurable, I can infer GPU-bound frames by comparing total rAF interval against CPU time spent in update+draw submission — if the interval is much larger, it suggests GPU wait or vsync pacing. Running headless Chrome with GPU for a 20-30 second benchmark should be manageable on his machine given the memory note about keeping captures short and sequential, though I should check whether headless Chrome's rAF is throttled to 60Hz or runs unthrottled.

I'll handle the hidden-logs work first, then move to performance. I need to verify the admin view still shows the hidden-logs count correctly even when gated posts are merged in — it's slightly redundant for admins but harmless, and viewers who've unlocked content only get posts, not logs, which is correct behavior. I'll add a new section to REDESIGN.md documenting this and commit the changes across the site files, but hold off on pushing or deploying until I confirm with the user at the end.

The row layout checks out — newest entry on top, lock icon, and the hidden logs count/date text, static with no interaction. I also spotted an unrelated issue where Lich's replay player bloats to 1-2GB from a stray 7GB dev screenshots folder, which I'll flag separately; for now I'm committing the logs line and updating the design record.

For performance, I'd want to first profile natively per-subsystem to find CPU hotspots during heavy play, then build a web harness with a standalone wasm build plus a headless CDP runner to measure frame times and compare against native, before fixing the hotspots and re-measuring both.

I should examine the game's tick() and draw() loop structure to see where time is spent, adding a lightweight profiler module with begin/stop timers gated behind a flag, instrumenting tick sections like snakes, powers, gore, fx, items, mover/warp, audio, and draw sections like scene graph updates, render passes, and HUD. Let me check game.lua's tick and draw functions directly.

Logs are committed. Next I'll profile performance natively first to spot hotspots cheaply, then build the web harness for real wasm numbers—starting by reading the game's main tick and draw functions.

I'm setting up a lightweight profiler module with timing accumulation per named section, then planning to instrument the tick, render, and renderer internals (scene update, shadow pass, main pass, post) to measure where time goes. Now I want to locate the R.render implementation to add these timing hooks inside it.

I'm tracing renderer:render in the Lua port — it walks the scene graph, updates matrices, sorts objects, binds uniforms, and issues draw calls through the engine's GPU API, which is probably the per-frame CPU bottleneck given the volume of cave meshes, snakes, and particles, plus a possible shadow pass bundled into the same render call.

I want to instrument this with a lightweight profiler that times tick sections (mover, powers, lich, cave, snakes, fire, fx, gore, warp, items, audio) and render sections (world render, warp, view, bloom, final, silhouette, HUD, audio update), breaking renderer:render down further into matrix updates, shadow pass, sort/draw list building, and actual draw calls. The profiler itself just accumulates elapsed time per named section across frames with near-zero overhead when disabled, and I can report averages per frame and per tick. Then I'd run a bench scenario exercising all powers and wave spawns to get real native timing numbers.

I'm adding a profiler module with timers around each tick stage (movement, powers, lich pose, cave, snakes, fire, effects, gore, warp, items) and render stage (sound, HUD, world pass, post passes), enabled only during benchmarking.

I should instrument game.lua's tick and render functions along with post.lua's R.render and the renderer internals. I'm checking whether perf_time is available on web builds — since Lich's gcpace uses perf_time and runs on the site, it must exist there too, likely via SDL's performance counter working under Emscripten.

I'll add a lightweight "lap" helper to prof.lua that returns the current time if timing is enabled, and accumulates elapsed time per named section when passed a prior timestamp, optionally tagging it as a per-tick measurement. Then I'll wrap each major tick section — gravity/collision, mover, powers, ending logic, lich-related updates, cave, snakes, fire, fx, gore, warp, items — with lap calls, plus a tick counter, before moving on to instrumenting the render path.

I'm planning to require the profiler module in game.lua near GCP, confirming perf_time is available from the engine on web builds, and noting the early returns in tick happen after the GCP lap so they're unaffected. Now I'm figuring out where to add profiling laps in post.lua's render sections—around world render, warp, and view/bloom passes—plus the update/draw totals in main.lua.

Next I want to check renderer.lua's render function structure to see if it needs sub-section laps like a shadow pass before adding them.

I'm realizing that having a transmissive lens visible forces the renderer to re-render all opaque objects into a transmission target, essentially doubling the draw cost. If the lens now floats longer, that expensive pass runs for a much bigger share of the time, which could hurt performance especially on the web.

I want to instrument Renderer:render with timed sections for matrix updates, projection/collection, shadows, transmission, and draw calls, naming the laps so they accumulate across all render calls (world, warp, view, passes), and pull in the profiler module in renderer.lua to track this.

I noticed the renderer re-renders the whole scene for the lens's transparent glass, similar to three.js, and since the lens now stays visible 9-14s instead of briefly, this extra render is happening much more often. I'll instrument the renderer's stages and render passes to measure its impact.

I'm noting that since main.lua is definition-only and reloads on save, requiring modules inside update is fine since they're cached. On desktop, GPU calls are likely immediate GL submissions with async execution, so presenting probably includes a flush. Now I'm looking at how the benchmark scenario in bench.lua gets activated, either through an environment variable or a file flag.

I'm figuring out how to set a deterministic seed for the bench run — U.RUN needs to be set before GM.create, so bench detection should happen early in game.lua's create function, pulling from the bench module's seed if active. The run itself starts immediately with all six powers enabled, sends enemy waves on a fixed schedule after the walk-in period, and runs for a set duration using the game camera; after an 8-second warm-up I reset the profiler and start recording, then print a report with frame time percentiles and FPS at the end along with a "BENCH DONE" marker. For frame interval measurement, I'm recording wall-clock deltas between draw calls using perf_time.

On web this means rAF intervals including GPU/vsync waits, so the bench hook gets called each frame from the game's render path when bench mode is active. Desktop runs via an env var and engine stepping, while web requires the harness to signal bench mode by writing a file into the virtual filesystem that the game checks for with io.open, with print output flowing to the console where CDP can capture it. Now I'm writing bench.lua.

I'm writing `port/bench.lua`, which activates via `LICH_BENCH` or a `bench_on` file and runs a fixed scenario (seeded walk-in, all six powers, a repeated wave schedule) with profiling from 8s–38s, outputting frame-time percentiles and per-section ms—identical on desktop and web.

I need to wire up two integration points: setting the RNG seed from the bench module when it's active in game.lua, and calling the bench frame hook from main.lua's draw function so it can track per-frame stats alongside the game state.

Placement matters too — the intro screen auto-starts on web standalone, and wave spawning forces immediate send through the direction queue, so I need to check how those interact with externally-paced benchmark steps that measure raw frame computation time without vsync. I should also check whether audio plays during the benchmark agent run, though muting it should be fine either way.

There are some pre-existing warnings from the shifted lines, but I should run the native bench by starting the drive and looping until it's done, then check the digest afterward while keeping room and profiling settings unaffected.

Native performance comes out to about 10.3ms CPU per frame, split roughly between drawing and updating. I need to double check how the engine's 120Hz update rate relates to the 60fps draw rate since that affects how I interpret the per-frame timing.

For wasm, I'm estimating Lua runs 2-3x slower, pushing frame times to 20-30ms and dropping fps into the 33-50 range — likely the real performance bottleneck. On the native side, the biggest costs are in render_object draw calls, snake logic per tick, and the warp/view pass, with smaller contributions from fx, shadows, GC, projection, matrices, powers, transmission, and gore.

Now I want to set up a web harness to actually measure wasm numbers, so I'm looking at the package-web-game.sh script to understand what it builds and how to strip it down to a lean, single-file HTML runtime package.

Native CPU use is about 10.3 ms/frame (5.4 ms drawing, 4.9 ms updating), and Lua running 2-3x slower in-browser could plausibly explain the 20-30 ms you're seeing—but I need real web numbers to confirm. I'll check the standalone web packager now to build a single-file version for testing.

I'm deciding to write my own simpler harness builder instead of reusing the complex existing script, and thinking through how to stage the runtime game files correctly rather than relying on the stale sync output.

For the actual bundling, I'm planning to skip file_packager and instead embed the files directly as base64 into a MEMFS loader that writes them during Module.preRun, which keeps things simpler despite the large size. I still need to pin down the engine build to use, and figure out how anchor.js is instructed to run the game's main.lua — I'll check the existing package-web-game HTML for how it configures Module to mimic that setup.

I'll build my own packager that bundles the game's runtime files from `lich-survivors/` with the `bench_on` flag into a single HTML file, embedding the wasm and assets as base64 to unpack before launch. First, I'll check how the generated `index.html` sets up the engine module so I can replicate it.

The engine build predates anchor.c's latest change slightly, so the site's own deploy might be close enough for the benchmark rather than rebuilding with emsdk. I should check whether that web engine build actually exposes the functions Lich needs, like sound_play.

The engine seems to just run main.lua from the VFS root with no args required, which is convenient. Now I need to write the builder script and harness — I'll reuse the CDP-over-WebSocket approach from megablock's shoot.mjs for driving the browser.

I notice megablock's harness launches an HTTP server even in htmlMode, though it's never actually navigated to, while mine skips the server entirely. Now I'm planning the webbench build script, which will reuse the sync script's file-collection logic and assemble a bench.html that inlines the large anchor.js engine script directly.

For the WASM binary, I'm deciding between setting Module.wasmBinary directly as a Uint8Array versus wiring up a custom instantiateWasm callback — the former seems simpler. For embedding the ~92 MB of asset files, I'm thinking through a preRun step that decodes base64 chunks into FS.writeFile calls, and weighing fast decoding options like the newer Uint8Array.fromBase64 API against slower atob-based loops given the large payload size. I'm also noting the engine may expect a shader-prelude.json file for shader warmup that I might need to account for.

I'm sketching the Module config object with canvas, wasmBinary, preRun, print/printErr hooks, and a locateFile passthrough, plus a window flag to detect when the benchmark print statement signals completion, and confirming the canvas and game's internal resolution/scaling settings.

Given the resulting single HTML file could be around 125 MB, I'm planning to write it efficiently from Python and now thinking through the run script: launching headless Chrome with GPU enabled, blocking all network requests except for the local page and embedded data/blob URLs, navigating to the file, waiting on a completion signal with a timeout, and capturing console output and errors. I'm also second-guessing whether Chrome can handle parsing a 125 MB HTML file with such massive inline string literals, recalling that V8's string length limits should still accommodate it.

I decide to keep the sound files included since removing them risks engine errors on missing assets, and confirm the mesh buffer files are also required. I also reason through how the engine should behave on the web platform—working directory, environment variable fallbacks, and audio fallbacks—before moving on to actually writing the build script.

I'll build a small harness under `lich-survivors/tools/webbench/`: `build.py` packs the web engine and game runtime into a single HTML file with embedded base64 assets, and `run.mjs` loads it in headless GPU Chrome (blocking all network requests) to capture BENCH output from the console.

I'm checking whether anchor.js relies on the global `Module` object from Emscripten and whether FS is accessible during preRun, since that depends on whether the build uses non-modularized output where these globals are directly exposed.

Also since engine execution happens synchronously, `addRunDependency` shouldn't be needed, and with no arguments passed the engine should boot into main.lua by default. Now I'll move on to looking at run.mjs.

I'm weighing the risk of loading a local file:// page since there's no network involved, and recalling the earlier harness test raised no issues with this approach. I also want to keep the headless GPU render brief—one run at 1280x720 for about 45 seconds should be fine, and if a clip is needed, I'll keep it short and flag it beforehand.

I'm wondering if anchor.js checks for Module.wasmBinary before fetching anchor.wasm, since the failure message suggests both async and sync fetch attempts failed—maybe the build strips that variable under certain Emscripten flags.

The engine skipped the embedded wasm bytes and tried fetching `anchor.wasm`, which the harness blocked. Since this build honors `Module.instantiateWasm`, I'll supply the module through that hook instead.

The web benchmark shows a mean 57.5 fps in headless Chrome against a 60Hz target, with frame times averaging 17.4ms but spiking to p90 23ms and p99 29ms, indicating dropped frames. Breaking down the CPU cost, draw and update calls alone consume 14.3ms per frame of Lua and GL submission, which combined with browser/engine overhead eats into the 16.7ms budget and causes frequent missed frames.

I'm also noticing the frame timing values are suspiciously round integers (18.00, 23.00, 29.00ms), which suggests the web timer is quantized to 1ms resolution rather than the finer microsecond precision typical of performance.now(). That coarseness would bias individual samples but should average out statistically across 1724 frames; however it also explains why p50 shows 18ms instead of the expected 16.67ms for a properly vsynced 60Hz signal, implying more missed frames than the raw numbers might suggest.

Breaking down where web CPU time goes per frame, I can see draw calls and object rendering dominate at ~4.8ms, with snake rendering around 3ms, warp/view passes near 1.85ms, and smaller chunks going to shadows, garbage collection, effects, transmission, projection, matrices, gore, bloom, and audio. The gap between total frame time and Lua's share points to roughly 3ms of overhead elsewhere.

For fixing the draw cost, I'm thinking about caching program lookup keys instead of building them through string concatenation each frame, skipping redundant uniform uploads by tracking last-set values per program, and batching draws where possible. For the snake tick cost, I want to separate out how much comes from the native tube mesh builder versus the Lua-side spine computation across all the snakes.

For the warp and view scene passes costing 1.85ms, I'm realizing both scenes are often empty during normal play, so each render call still runs the full update_matrix_world, collection, projection and shadow pass pipeline for nothing — a cheap fast path that skips rendering entirely when a scene has no visible children could save almost all of that time.

For the transmission pass, which only triggers when a lens is visible but can cost 3-4ms due to re-rendering opaque geometry at half float with 4x MSAA and mipmaps, I'm thinking about avoiding the redundant render by reusing the already-rendered opaque world target — blitting it into the transmission texture instead of re-rendering the scene a second time, though this would require reordering the opaque and transmission passes.

GC at 0.98ms/tick comes from paced garbage collection, so reducing allocations in hot paths like draw keys would help. Shadow pass at 1.0ms walks the scene drawing casters each frame for the sun light — I could cache static casters since the cave geometry doesn't move, though dynamic objects like snakes and the lich still need live shadows, or alternatively update the shadow map every other frame. Then there's fx at 0.94ms/tick covering particle effects like motes and puffs.

Ranking fixes by payoff versus effort: skipping empty warp/view scene renders is an easy win worth ~1.5ms on web; r3.draw micro-optimizations need more digging but could save 2-3ms; transmission via copy is medium effort but saves lens-time costs; snakes need investigation; and GC/garbage cleanup is lower priority. Before touching any of this, I need to make sure determinism holds — the LICH_ROOM state digest shouldn't be affected by rendering changes, and any render changes need to produce pixel-identical or visually equivalent frames, which I can verify using engine snapshots at fixed points with a fixed seed. Now I want to look closer at how the warp and view scenes are handled.

Web benchmark results: 57.5 fps average on headless Chrome/RTX 2060, already short of 60 fps, with CPU at 14.3ms per frame (1.4-1.6x native) and world draws, snakes, and warp/view renders as the biggest contributors. I'll start by examining what's normally rendered in the warp and view scenes, the cheapest item.

I notice the warp scene always renders two meshes—streaks and puffs—even when nothing is active, and the view_scene ends up empty since nothing adds to it outside post.lua, meaning renderer calls still run their full pipeline (matrix updates, collection, projection, shadow pass, clears) for essentially nothing, which wastes GL calls on web. I'm thinking through fixes, starting with the view scene itself.

Rather than rendering an empty view_scene every frame, I could skip rendering entirely once it's been cleared and has no children, only re-rendering when children appear. For the warp scene, I'd want a warp.active() check tied to whether streaks are on or puffs are alive—if inactive, skip the render but make sure rt_warp gets cleared once so the final composite doesn't apply stale distortion. I also want to check whether warp.update uploads its vertex buffers every tick regardless of activity, since that could explain part of the 0.25ms/tick cost on web, and I should look at the update function directly to confirm.

I'm noticing that the puffs system is re-uploading all 500 particle positions and colors to the GPU every single tick, which is costly since it's copying thousands of floats from Lua tables each frame. I should only mark the buffers as needing an update when the data actually changes, instead of doing it unconditionally every tick.

Beyond that, I want to track an overall `active` flag covering any live streak, puff, or pending state transition, and expose it via `warp.active()`. Then in the post-processing pass, I can skip rendering the warp scene entirely when nothing is active and the target render texture is already cleared — since an inactive scene renders as all-zero alpha anyway, skipping it should be pixel-identical to the current behavior while saving unnecessary draw calls.

I should check whether the view scene follows the same pattern (skip rendering when empty, clear once) in post.lua, and now I want to dig into the renderer's object-drawing code to look for other inefficiencies in the main render loop.

I'll skip redundant clears/uploads for warp and view since they're often empty, keeping output identical while cutting wasted work. Next I'll dig into the world's draw calls, the biggest cost, by reading `render_object` and `draw`.

I'm tracing through the per-draw renderer cost: uniform updates for projection/view/camera, material uniforms, and per-object matrices each require separate gpu_set calls passing Lua tables that the C side has to unpack element by element, which adds up.

I should check draw-state assignment, mesh attribute iteration in gpu_mesh_of, and the matrix_world determinant calculation per draw, and also figure out how many draw calls happen per frame since the cave scene likely has many separate meshes. Adding finer-grained profiling laps inside Renderer:draw -- splitting out program lookup, mesh lookup, uniform writes, and the actual draw call -- would help pinpoint where the real cost sits.

The per-call overhead natively is negligible for a one-off diagnostic run, so I'll go ahead with the fine-grained instrumentation.

Each draw is expensive—uploading matrices as Lua tables, checking mesh attributes, and recomputing blend/cull state and a determinant per object. I'll add temporary timers and a draw counter inside each draw call, then run it natively to get a finer breakdown before deciding on fixes.

The counter shows roughly 210 draw calls per frame with 53 material refreshes. Mesh updates stand out as the costliest at 2.28ms/frame — I'm tracing through how dynamic attributes get flagged for update and uploaded to the GPU per draw call.

The expensive part is uploading Lua-table-backed attributes element by element (via rawgeti calls) for things like warp streaks, puffs, and fx particles, since each float in the array requires a separate C-side read. I should instrument the update function to tally the actual float counts being pushed per attribute each frame, to pin down which buffers dominate the cost.

A real fix would mirror what snakes already do with typed gpu_buffer/gpu_tube objects instead of plain Lua tables, or better yet, only upload the live/used portion of each array rather than the whole thing each frame -- that requires the engine to support ranged uploads, which it currently doesn't.

The main cost is the mesh step (2.3 of 3.3 ms), driven by dynamic vertex buffers (particles, warp streaks, gore) being re-uploaded from Lua tables number by number. I'll measure which buffers get uploaded and how large they are.

That's 257k floats uploaded per frame, and the warp streak buffers alone cost roughly 1.1ms natively since they get re-uploaded whenever any streak is active, which happens frequently since streaks drive the burst effects.

Since gpu_mesh_update uploads the whole array, I need to either add a range-based update API on the engine side (risky since it requires redeploying the site engine) or restructure the streak mesh into smaller chunk meshes so only active chunks get uploaded and inactive ones skip drawing — the Lua-side fix seems safer and more immediately deployable.

I'm now tallying up the per-vertex float counts for the warp streaks and comparing that against other instanced systems like leak flakes, fx points, ribbons, and gore splats, trying to figure out where the real memory/upload bottleneck is across the whole frame budget.

Reading large Lua tables element-by-element in C to feed glBufferSubData is costly, especially in wasm where overhead multiplies — so I'm weighing whether a blob/gpu_buffer-backed attribute path could sidestep that per-element Lua table read entirely.

Per-element C calls won't help unless batched, so the real win is uploading less data overall — chunking warp streaks into smaller groups (since few are likely active at once) and only uploading dirty chunks, similarly skipping puff uploads when nothing's alive or changed. I'm also considering the sizes of other systems like fx points and fx ribbons with their various vertex attributes to see where else uploads could be trimmed.

Tallying per-frame costs, warp.streaks is eating roughly half of the mesh budget at ~1.09ms out of 2.27ms, with fx around 0.4ms, leak flakes 0.13ms, and gore/depth smaller still. That makes warp streaks the clear priority to fix first, so I need to look at how K and streaks are actually structured and used.

A quarter of a million floats get uploaded every frame, and warp streaks alone eat ~1.1 of the 2.3ms mesh cost since the full 200-streak buffer re-uploads even if only one streak is active; particles add another ~0.4ms. I'll check the streak buffer's size and how many streaks are actually live at once.

With 24 segments per streak and 200 streaks, I'm estimating vertex counts and realizing that chunking streaks into groups of 10 means only the clusters with active streaks need re-uploading each frame, cutting upload cost roughly 10x since active streaks tend to occupy the lowest free slots. Each chunk mesh also becomes its own draw call.

So I'm restructuring warp.lua to split the single streak geometry into 20 chunk meshes, each holding 10 streaks with their own buffer attributes and index buffer, computing chunk and local indices from the streak index, marking a chunk dirty only when one of its streaks changes, and toggling chunk visibility off entirely when none of its streaks are active so there's no need to upload zeroed fade values.

When a chunk becomes visible again, I need to make sure any off streaks inside it still have their fade zeroed out from before, which the existing written_off logic already handles per streak regardless of chunk visibility. For draw order equivalence, since all chunks share the same origin and z, they'll sort by creation order same as the original single mesh, so the render output should stay pixel-identical while cutting the per-frame float upload from 134k down to roughly 13k.

Puffs still upload 3500 floats each tick, which is cheap enough to leave alone, and the frame totals around 210 draws, which is fine. Now I'm turning to the fx particle buffers to check whether each points system uploads its full array every frame regardless of live particle count, thinking through whether dynamically resizing those arrays in growth chunks could avoid the constant full-size upload.

I want to tackle warp chunking, puff upload gating, and skipping empty warp/view renders first, measure the impact, and then come back to decide whether the fx shrinking approach is worth implementing.

I'll split the 200 streaks into 20 smaller meshes so only changed ones get re-uploaded, and skip rendering empty meshes/blank warp-view frames—cutting unnecessary uploads substantially. Implementing this now in `warp.lua`.

Additive blending is order-independent in theory, but with limited precision formats like RGBA8 or half-float, the order of accumulation could introduce tiny rounding differences between chunked and single-mesh draws since chunks draw their streaks in sequence matching the original index order.

I also realize DoubleSide transparent materials cause two draws per mesh (back then front), so with chunking each chunk contributes its own back/front pass, changing the overall blend order across chunks compared to the single mesh's unified back-pass-then-front-pass sequence. Since blending clamps to [0,1] in fixed-point targets, this reordering could matter where saturation occurs, since clamped addition isn't strictly associative.

For non-negative additive values, clamping gives min(1, sum) regardless of order, so that's actually fine; only half-float rounding could introduce tiny ulp-level differences, which I'll accept. Since these are camera-facing ribbons with culling, each fragment typically only gets drawn once per pass anyway, so overlap effects should be minor — I'll verify with pixel diffs later and leave force_single_pass alone.

Writing chunking logic...

Building chunk meshes and dirty-flag tracking...

Right, since the mesh is invisible it won't actually upload until the next draw call, so needs_update just stays pending until it's drawn again — that's correct behavior.

For the warp scene, I want to skip rendering entirely when nothing's active: no chunks on and no puffs alive. I'll expose a warp.active() check, and for puffs track whether any are alive so the points mesh visibility follows that — invisible meshes don't get drawn, so I can skip uploads. When a puff dies mid-tick I still need to zero its alpha and flag for update so stale data doesn't reappear if the mesh becomes visible again later.

Now I need to wire this into post.lua's render path — checking an overlay flag, then falling back to warp.active() to decide whether to clear the render target once and cache that "blank" state, or actually render the warp scene. I'm thinking through whether rendering an empty-visible scene auto-clears the target or just leaves it untouched, since that affects whether I need the explicit clear-once logic.

Same logic applies here—just clear once and skip the render call if empty. Time to write out these patches.

I'm checking variable scoping to make sure the `pts` local used for puffs visibility doesn't collide with other locally-scoped `pts` variables defined inside separate loops elsewhere in the code.

The world-override clear-once optimization should be equivalent to the old per-frame clear, and the written-off/fade-zero streak logic should still render identically even with chunk visibility gating. To confirm, I want to compare rendered frames from the old and new code at fixed deterministic ticks in the benchmark scenario, which means I'll need to capture reference frames from the old version first, possibly by stashing the current changes.

But I realize the bench scenario relies on wall-clock delta time rather than fixed ticks, so wave timing would vary between runs and break pixel-level determinism. I need to switch to manual stepping through the game API — enabling manual mode and driving frames explicitly — so I can compare frames at fixed, reproducible points between the old and new code.

I'll write a probe script that steps manually through the scenario with waves at fixed tick counts, snapshotting frames into an output directory at set checkpoints, then run it before and after the patch and diff the resulting PNGs, similar to past sessions where frames came out pixel-identical.

I'll capture before-frames using a separate frame probe with manual ticks, fixed waves/seed, and snapshots at set points, since the benchmark's wall-clock pacing makes exact replay unreliable. Capturing the reference set now with the current code.

I'm wondering whether a second capture with identical code would be deterministic - the game state itself is deterministic given the seed and manual ticks, but I need to check whether the engine's own update loop still runs timers and animations via the render delta time, which could introduce non-determinism independent of the manual game logic.

Since render_dt only accumulates a fixed step per draw, time progression itself should stay consistent, so to be safe I plan to apply the patch, capture results, and also run a second untouched baseline to confirm the probe behaves deterministically before trusting any comparison.

Only 24 pixels differ out of 921,600, with a max difference of 12 — that's likely blend-order variation in the half-float target rather than real nondeterminism. I should verify by running the after-capture twice to check if it's self-identical; if so, this tiny discrepancy is visually negligible and acceptable.

Now I'll keep the fine profiling hooks since their cost is just a cheap boolean check per draw call, and rerun the web and native benchmarks to measure the actual gain.

8 of 10 frames match exactly, with the other two off by just 24 pixels at up to 12/255 levels — expected rounding from the double-sided streak blending order. Now measuring the gain on the web.

Draw time dropped from 8.05 to 6.76 ms/frame, mainly from warp+view and r3.draw improvements, pushing fps from 57.5 to 59.2. CPU total still sits at 12.9 ms though, so I'm eyeing snakes.update and the remaining r3.draw uploads as the next optimization targets.

Beyond that, there's r3.shadow at 1.06 ms walking the scene for casters, and gc at 0.95 ms/tick which looks like a fixed GC budget per tick rather than something adaptive to actual garbage volume. If GCP.tick steps in fixed increments regardless of allocation rate, making it adaptive to collectgarbage count growth could shave off real time on web. There's also fx, transmission, project, and matrices costs to consider, but gcpace looks like the cheapest win, so I want to dig into that file first.

The warp optimization cut drawing time from 8.0 to 6.8ms and warp/view renders from 1.85 to 0.32ms, bumping average fps from 57.5 to 59.2. Remaining targets include snakes, draws, shadows, GC, particles, and the lens render—starting with GC pacing, since it may burn a fixed time budget each tick regardless of actual garbage.

I'm realizing that GCP.tick only breaks early if a cycle finishes quickly, but with a 70-108 MB heap each incremental mark/sweep pass takes long enough to eat the entire 0.5 ms budget every tick, so GC ends up running continuously. I also note that perf_time's 1 ms resolution on web limits how finely we can measure this.

So instead of pacing GC by elapsed time, which gets distorted by that 1 ms quantization, it makes more sense to pace it by actual work: track how many KB have been allocated since the last tick and call collectgarbage('step', alloc_kb) proportional to that growth, letting Lua 5.4's stepmul scale the collector's effort to match allocation rate rather than wall-clock time.

But I'm second-guessing whether GC pressure is even the bottleneck at this scale, since the heap holds ~70-108 MB of mostly live mesh data, so each full mark phase has to traverse all of that live memory. With garbage accumulating at roughly 40 KB/tick and a pause setting of 200 (doubling threshold), a new cycle wouldn't trigger until the heap grows to 200 MB, meaning around 2500 ticks (~42 seconds) between cycles -- with each cycle's expensive marking work spread out according to stepmul.

The real issue is that continuous cycling (pause 100) forces the GC to re-mark the entire live heap over and over, wasting the whole 0.5ms/tick budget, whereas a higher pause value like 200 drastically reduces total marking work at the cost of roughly doubling peak memory. Since this runs in wasm where memory growth is tolerated, that tradeoff seems worth it -- a pause of 150 would mean cycles every ~21 seconds instead, which feels like a better middle ground than letting the pacer mark the same live data repeatedly.

I'm thinking I should instead tie incremental GC steps directly to allocation volume, driving `collectgarbage('step', kb)` by how much was allocated that tick, with pause around 150 and stepmul around 100 -- checking how Lua 5.4's incremental stepping actually decides when to start a new cycle during the pause phase.

Still tracing GC step logic...

This matches Lua's automatic pacing, but applied at our own tick boundaries so collections never hit a single frame hard, since work scales with KB allocated since the last tick. The earlier spike where a whole cycle got freed in one or two frames was probably tied to how sweeping or stepsize interacted with generational pacing, since incremental sweeping should otherwise spread work evenly.

I'm sketching a tick function that measures KB allocated since the last check and scales the GC step size proportionally, using a tuned pause threshold for the incremental collector's parameters.

Now I'm reasoning about how stepmul controls the GC's pace—with a higher stepmul the mark-and-sweep cycle finishes faster relative to allocation rate, so I'm estimating how the live heap size and pause threshold combine with allocation rate to determine how often full cycles occur and their resulting cost per second.

This gives roughly 6-10x less GC CPU cost compared to the current per-tick overhead. I'm also considering whether the long-frame spikes stem from Lua's automatic sweep pacing taking large steps when debt accumulates, versus using explicit per-tick step sizes to avoid that irregularity.

Writing GP v2 config...

I'm checking whether the memory tracking works correctly across GC steps — since steps free memory and allocations continue accumulating debt, I need to confirm the debt logic still triggers collection properly even when the collector is nominally stopped, since Lua 5.4 keeps adding to GCdebt on every allocation regardless of state.

So with the collector stopped, the pause parameter effectively gets ignored since each explicit step with positive debt triggers real work, meaning GC cycles continuously based on allocation volume rather than time. The cycle frequency depends on feeding enough work units to cover a full heap traversal, so cycle period scales with heap size divided by the work rate fed per tick.

The CPU cost ends up independent of heap size — it's just the allocation rate times the step multiplier, which at native marking speeds only amounts to a fraction of a millisecond per tick, not much of an improvement over the simpler 0.5 approach. A better fix is to manually implement the missing pause: after a cycle finishes, don't step again until the heap has grown by some threshold relative to live memory, restoring the pause behavior that was lost.

With that pause in place, work only happens during active cycles, and the average GC cost per second drops dramatically — roughly 0.1 ms/tick when amortized, since cycles only recur once the heap doubles relative to live data. During an active cycle, tuning the step multiplier high enough ensures the cycle completes well before the heap doubles, keeping per-tick traversal work manageable.

I'm also considering whether generational GC mode would help here, since most garbage is short-lived per-frame tables while the 80MB live heap stays largely static — this plays well with generational collection's strength of cheap minor collections when young objects die quickly.

That minor collection spike risk pushes me toward keeping the manual-paced incremental approach instead, matching round 64's design. I'm sketching a small pacing module that tracks live KB after each cycle, waits until allocation exceeds a pause threshold, then steps the collector proportionally to bytes allocated since the last step.

I need to understand how `collectgarbage('step', n)` actually translates into collector work internally—in 5.4 the debt is scaled by stepmul and consumed via single-step work units—so I should empirically tune this by measuring native GC time per tick, worst-case frame time, and peak heap size rather than relying purely on the formula.

The first cycle does a full collect before settling into steady-state, and I need to handle runaway allocation bursts: if the heap grows past 2.5x the last live size, I should trigger a bigger catch-up step rather than waiting for the normal cycle. This is risky enough that I want to benchmark it carefully before moving on, but first I should check whether snakes.update's 3ms/tick cost on web is actually the bigger priority to fix.

The collector lacks a pause between cycles, causing it to continuously re-mark the live heap and burn its full budget every tick (worse on web due to millisecond clock granularity); I'll fix this later, but first I'm tackling the bigger cost—snakes at 3ms/tick on web—starting by reading their per-tick update.

I'm noticing a real performance problem: inserting at the front of each snake's trail array shifts up to 600 elements every tick, and with 8 snakes at 60fps that's roughly 290k element moves per second, plus a fresh table allocated per point creating constant garbage. Then there's the build step that walks the trail to sample points for the tube spine.

I spotted a performance issue: each snake inserts new trail points at the front of a 600-point list every tick, shifting the whole list and creating garbage via a new table each time. I'll now check the `build` function to see how it converts the trail into the tube.

I'm estimating per-tick cost across the ring loop—ground height sampling with bilinear interpolation and smoothstep calculations, multiplied across all rings and all eight snakes, plus the extra burn-texture buffer upload when a snake is charred or glowing.

Any optimization has to stay exact-preserving so the LICH_ROOM digest doesn't change, which means I can't casually restructure data like the trail array even though the current front-insert approach costs real cycles—Lua's table.insert does a full shift of ~600 elements via get/set calls per snake per tick, adding roughly 0.1-0.5ms depending on native vs web overhead, and I need to check all other usages of `.trail` before considering any structural change.

I want to isolate where the rest of the time goes too, so I'm planning to add temporary fine-grained profiling around the snake movement function, the build function, and the direct function to see their individual costs natively.

I'll break down the snakes' per-tick cost into movement (with trail shifting), tube building, and wave direction to pinpoint where the performance hit comes from before optimizing.

The build cost breaks down to roughly 0.27ms per ring across 72 rings, with the real expense coming from smoothstep/exp calls, bilinear ground sampling across two fields, fx callbacks, and point copy operations before feeding into the GPU tube. I'm now considering ways to optimize this while keeping the output exactly the same.

The leak ring RK/GL branch is cheap enough to ignore. The real suspect is cave.ground_y — if it's doing multi-octave noise per call, that's 460 calls per frame across all builds, which could be the hotspot, so I want to isolate its cost by calling it 100k times in a microbenchmark.

The snakes' cost comes mostly from tube rebuilds (~6.4 per frame at 0.27ms each), with trail shifting negligible; the main suspects for ring cost are the ground height lookup and leak math, so I'll time the ground lookup in isolation next.

Each ring's ground_y computation is costing about 0.78 microseconds, so across 72 rings that's roughly 80 of the 270 microsecond build time. The math.sin calls are surprisingly slow because boot.lua swaps in js_ versions of math functions to match three.js precision, meaning each call routes through a C function bridge rather than native Lua math, which adds real overhead for sin, smoothstep, and exp.

Since I can't swap out the exactness-preserving math wrappers, my real lever is reducing how much work gets done per ring — maybe skipping rebuilds for stationary snakes in fx states like burning or dying, or hoisting invariant calculations out of the loop. The bigger structural fix might be moving tube position building into C entirely, since the web currently spends about 0.45 ms per build across roughly 6.4 live snake builds per frame.

That would require an engine change I can't deploy right now, so instead I'm looking at ground(x,z) sampling itself — checking whether ground_y uses a heavy bilinear heightfield lookup or has any caching, since each call costs about 0.78 µs.

Ground lookups account for roughly 80 of the 270 µs per tube, since the engine routes every math call—including `ground_y` and `math.sin`—through C-level JavaScript-exact implementations. I'll dig into the `ground_y` code next.

Since ground_y is a pure function of continuous (x,z) coordinates, caching results exactly would require matching floating point keys precisely, so a memoization approach could work without changing the digest as long as lookups are exact rather than interpolated.

I realize spine positions likely feed into the LICH_ROOM digest, so any approximation there is risky — but the varied/gameplay path already distinguishes itself via floor_at, which layers bump sampling on top of cave.ground_y only in non-LICH_ROOM mode. That means I could swap in a precomputed height grid with bilinear interpolation just for floor_at, leaving the exact digest path untouched — though I'm now weighing the memory and GC cost of a fine-resolution grid (hundreds of thousands of entries) against its performance benefit.

Checking the error bounds, a 0.05 m grid with bilinear interpolation would stay well under a millimeter off from the true fbm noise, so snakes would look visually identical. But I'm realizing cave.ground_y is shared across many systems beyond snakes — gore, fx, lens spots — so a cached grid limited to snake builds would only shave off a modest fraction of the per-tick cost, and I should also consider whether snakes even need to rebuild all 72 rings every tick regardless of visibility.

The remaining build cost comes from Lua-level operations like smoothstep calls, float conversions, and point assignments per ring, which are harder to cut without reworking the math itself. So the real question is what general lever would help most: at 60 Hz with ~17 ms frame budgets, the big costs split between rendering (~6.8 ms) and update (~6.1 ms), with draw calls alone eating 3.4 ms across roughly 210 draws per frame — much of that from per-frame instance matrix uploads for things like leak flakes and gore splats.

For the shadow pass, which costs around 1.06 ms, I'm thinking about separating static cave geometry from dynamic actors so I can cache the static depth once and only redraw dynamic casters each frame, using a cheap blit shader to copy the cached map forward — this requires identifying which casters are actually static versus dynamic. For the transmission pass (~0.83 ms, spiking near the lens), I'm considering whether I can avoid a full re-render by reusing the opaque world render target instead.

Scissoring the transmission render to the lens's screen bounds would cut GPU cost but not the CPU cost of submitting draw calls for every opaque object, which is really the bottleneck. Reusing last frame's full world render as the transmission source would skip the re-render entirely, but since that render already contains the lens itself, it would create a feedback loop of the glass refracting its own previous image.

Instead, I'm considering rendering opaque objects into the world render target, then blitting that into the transmission texture before rendering transmissive and transparent objects — matching three.js's approach but needing to reconcile format differences, since the transmission RT uses MSAA and half-float with mipmaps for roughness blur while the world target may not match.

I'm also considering whether rt_world uses MSAA, since switching framebuffers in WebGL preserves contents but resolving multisampled targets mid-render could cause issues if the engine resolves on finish and then expects to continue drawing afterward.

This is getting complicated, so let me step back and prioritize by measured web cost. Current web numbers: DRAW 6.76, UPDATE 6.15, total CPU 12.9 ms, frame mean 16.9 ms (59.2 fps), p90 22 ms. I'm weighing candidate fixes against these numbers — a GC pacer with a real pause could save ~0.8 ms/tick with low effort but some memory risk, while varying the snakes' ground grid could save ~0.9 ms/tick with low-moderate effort at the cost of altering snake positions slightly.

Other candidates: optimizing fx/leak/gore partial uploads could save ~0.2-0.6 ms web for medium effort each, a shadow static cache might save ~0.6 ms web for medium-high effort, transmission optimization could save ~0.83 ms web for medium-high effort, and reducing matrix projection overhead (1.07 ms web) by skipping update_matrix_world recomputation for static objects via matrix_auto_update=false looks promising if I can confirm three.js actually skips the compose step for unchanged static objects.

Given time constraints, I'll prioritize the static matrix fix as the easiest exact win, plus the earlier general optimizations, and defer the shadow/transmission work as follow-ups to report. First I want to verify how many scene objects would benefit and check the update_matrix_world implementation details before committing to that fix.

I'll hold off on caching the ground-height noise since it'd break the room-test digest, and instead target exact-preserving wins like the scene-graph matrices and culling, checking object counts and whether static objects can skip work.

With 248 objects each checking cached transform state, that's roughly 10 comparisons plus recursion per object per render call, and since update_matrix_world runs on the world scene every frame, this adds up to the measured 0.47ms overhead in wasm from per-object traversal cost.

The frustum culling walk itself seems fine at 0.58ms, doing a simple sphere test per object. The real cost centers now are GC pacing (~0.8ms/tick) and the transmission pass, which averages 0.83ms but spikes 3-4ms whenever the lens is visible — and since the lens now floats for ~10s stretches, it's visible far more often, making this a real regression. I'm weighing options: cheaper transmission at lower resolution, skipping transmission while the lens is idle (visual tradeoff), or reusing the transmission render across frames since the background behind the lens changes slowly — rendering it every 2nd or 3rd frame while idle but every frame while firing, accepting a frame or two of refraction lag.

Looking at the math: transmission re-renders ~150 opaque draws at roughly 16µs each, costing ~2.4ms when visible, implying the lens is visible ~35% of the time on average. Reusing every 2nd frame saves ~0.4ms average, while skipping re-render entirely saves closer to 0.8ms average and 2.4ms when visible. I'm also noting shadow pass caching could save ~0.7ms by caching the static portion, plus smaller wins from particle uploads and the snake ground cache (~0.9ms). Each fix needs careful validation to ensure frames stay visually identical, so I'll tackle GC pacing first since it's simple and high-impact, then move to transmission.

Confirmed matrices are already cached, so the 0.5ms is just the cost of visiting 248 objects in wasm. For the collector, I'll pace incremental steps by allocation with a growth-triggered pause instead of lump work, then implement and measure heap size, collector time, and worst-frame impact natively.

I should first measure the current GC baseline before changing anything - heap size range and gc ms/tick. I'll add tracking to the bench report to capture kb usage per frame alongside the existing timing metrics.

I realize the file never got written since the second assertion failed before the write step, so bench.lua is still unchanged. I'm now suspecting the heredoc escaping halved my backslashes, turning the literal `\n` pattern into something unintended when it passed through the bash tool.

Switching to the Edit tool instead, I also notice the native baseline shows GC averaging 0.515 ms/tick but with a troubling 62-66 ms frame spike — possibly from shader compilation or a catch-up GC pause. Let me fix bench.lua with the Edit tool.

The shell swallowed a backslash in my search string, so the script's edit didn't take—I'll fix it directly with the editor. Meanwhile the native baseline shows the collector using its full 0.515 ms budget each tick, plus one 62-66 ms frame per run I'll dig into.

I'm tracing how Lua's GC debt mechanism behaves when the collector is paused by the user—checking that allocations during GCSTPUSR don't trigger real collection work, and working out how the debt accounting interacts with step size when stepping is explicitly invoked.

Working through the math on actual GC throughput: with stepmul at 100, roughly 4x the allocated bytes get traversed as work, so a cycle covering tens of megabytes of heap would take hundreds of allocation ticks to complete, translating to maybe a few hundred microseconds of marking/sweeping per tick on average, with idle stretches during the pause phase between cycles.

Now I should actually test this natively rather than estimate — measuring GC time per tick, heap size range, and worst-case frame cost would give real numbers instead of theoretical ones.

There's a naming conflict since GP.pause is both a function and a parameter name, so I should rename the parameter to `grow` to avoid the clash.

GC time dropped dramatically to 0.02 ms/tick with heap staying in a reasonable 70-117 MB range, which is good. I'm now curious about that worst-frame spike of 68.7 ms around the 27-33 second mark—the baseline had similar max frames around 62-66 ms, so I'm trying to figure out what's happening at that point in the run, possibly some kind of wave event.

Checking the wave timing doesn't quite line up, so this spike is more likely caused by a first-time shader compilation stall—programs compiling the first time an effect like gore or lens shards appears. I know shader compiles can be much slower on web via ANGLE/D3D, so precompiling/warming up shader programs at boot time is probably the right fix rather than letting first-use compiles cause hitches during gameplay.

Rather than deep-diving into a PROF diff for the worst frame, I think it's more efficient to instrument the renderer directly: log whenever a new program is compiled on first use, with its name and timing, so I can confirm program compilation is actually the culprit behind these spikes.

Collector cost fell from 0.52ms to 0.02ms per tick, but there's still a 34-69ms frame spike each run—likely from shader programs compiling on first effect use. I'll check how the renderer creates programs to confirm.

Since all programs compile at boot, the spike can't be compile time unless the GPU driver defers actual compilation to first use, which is common with lazy shader compilation on first draw. I should profile the worst-case frame to identify exactly which section is causing the spike.

I notice a spike at step 3179 where a GC step took 19 ms—much larger than the baseline spikes, which were capped by the time budget or catch-up limits rather than actual GC work. This new pacer spike likely corresponds to the atomic phase at the end of an incremental GC cycle, which can't be split across steps the way the rest of the cycle can.

There's another spike at step 3267 (54.4 ms) where measured sections only account for ~10 ms, meaning the rest of the cost is outside Lua's tracked work entirely—probably GPU sync, swap stalls, or driver-side hiccups. The atomic phase itself likely runs long due to large weak tables or many gray-again objects that accumulated during marking.

Mutable large Lua tables like particle arrays, warp chunks, snake burn arrays, and trails get barrier-marked gray again whenever they're written to mid-cycle, forcing atomic to fully retraverse them—and arrays with tens of thousands of numeric elements make that retraversal costly since each element needs a collectability check. I'm wondering if the old pacer's continuous cycling masked this same atomic cost inside its 62-66 ms spikes, and whether the fix requires moving big numeric buffers out of Lua tables entirely, or whether the new pacer's longer pause just makes these atomic spikes rarer but no less severe when they hit.

Checking the 30-second benchmark for frames exceeding 25 ms, the new run only shows two spikes after warmup — a 19 ms GC spike and a 54 ms non-Lua spike, likely tied to a RenderTarget allocation (half-float MSAA with mipmaps) or texture upload rather than garbage collection itself, since the baseline's unexplained 62-66 ms spikes were worse. This confirms the new pacer is at least as good on spike severity while being better on average cost and frequency. Now I want to rebuild and rerun the web benchmark to see how these GC changes play out there.

Found two spikes: a 19ms frame from an unsplittable collector cycle (now rarer with the new pacing, every 15-25s vs every few seconds before) and a 54ms frame mostly outside Lua that predates these changes, which I'll note but not investigate now. Next I'll measure the collector change on the web.

Looking at the web results, CPU per frame dropped nicely from 14.3 to 11.4 ms and percentiles improved across the board, but oddly the mean frame time and fps got slightly worse than before despite the CPU gains — something else must be affecting frame pacing in headless mode.

This points to the frame time being GPU- or compositor-bound rather than CPU-bound, possibly limited by Chrome headless's rAF/BeginFrame scheduling at roughly 55-60 Hz with some jitter. The internal rendering pipeline with its multiple passes shouldn't be taxing the GPU much on an RTX 2060, so the gap between CPU time and actual frame time likely comes from headless compositing or canvas readback behavior I can't directly measure.

To settle whether the bottleneck is CPU or GPU, I should run the benchmark uncapped -- disabling vsync and the frame rate limiter so rAF fires as fast as possible, letting frame time reflect max(CPU, GPU) per frame. I'll add flags for this in run.mjs, gated behind an env variable like WEBBENCH_UNCAPPED, so the mean frame time then reveals the true per-frame cost.

Web CPU cost dropped from 14.3 to 11.4 ms and tail latencies improved, but the average frame time barely changed since headless Chrome's pacing masks real gains. I'll rerun with vsync and the frame-rate cap disabled to measure true per-frame cost.

Looking at the uncapped timing data, I notice it's bimodal - a cluster around 13ms and another stretch of long frames at 35-46ms. I suspect those longer frames correspond to GPU-heavy moments, possibly when effects like transmission, lens blur with mipmaps, or bloom are active, rather than a CPU bottleneck.

I want to instrument the bench to classify frames where interval time far exceeds measured CPU time (indicating GPU stalls), and cross-check those against whether a lens/transmission pass ran that frame.

Without vsync, most frames run ~13ms but 10% spike to 35ms+ (99th percentile 46ms, worst 69ms), while Lua CPU stays steady at 11.2ms—so the slow frames likely come from GPU or browser overhead. I'll add a per-frame split to the bench to check Lua time inside long frames and whether the lens's extra render triggered during them.

Checking that the frame timing call measures the previous frame's duration consistently, since it's called before the current frame's draw — this lines up correctly. I'll run it uncapped on web.

About 21% of frames show roughly 22ms of non-Lua overhead, with Lua itself only taking ~14ms while total frame time hits 35-37ms—lens presence barely affects this. The good frames run much leaner at 11-12.6ms with 9.7-11.4ms in Lua, so I need to figure out what's eating that extra 22ms in the slow frames, likely something on the GPU or browser side.

If this were pure GPU-bound work, I'd expect slowness to scale with scene complexity rather than appear in this sharp bimodal pattern, which points instead to periodic stalls—maybe sync points like texture uploads or buffer updates causing occasional blocking, though typical Emscripten GL calls use heap subarrays without extra allocation so that's not obviously it. Another possibility is headless Chrome's frame scheduling: even with the frame-rate limit disabled, the compositor might still tie rAF to vsync-like timing, causing some frames to wait on GPU process swaps—the ~35ms duration being roughly double a 60Hz interval is suggestive of this.

I'm wondering whether there's some hidden per-frame GPU readback (like picking or replay recording) that could explain the stalls, though that seems unlikely on the web build, and ruling out canvas compositing overhead since that should be uniform rather than periodic. The most reliable way to pin this down would be using Chrome's CDP Tracing domain to capture GPU, V8 GC, and scheduler events during a session with long frames and see what correlates—though I should first quickly test simpler hypotheses like whether V8 garbage collection from WebGL typed array views could be the culprit despite Emscripten's optimizations.

On closer inspection, since we're using WebGL2, matrix uniform uploads and buffer subdata calls use offset-based overloads that avoid allocating new TypedArray views, so that's not the GC source. The real suspect is likely implicit GPU synchronization: updating a buffer via glBufferSubData while the GPU is still reading from it in a prior draw can force a driver-level stall unless the buffer uses a dynamic/discard usage pattern, and I need to check whether our dynamic mesh attributes are actually hinted as DYNAMIC usage to avoid that stall.

I'm thinking I should capture a Chrome DevTools trace covering timeline, GC, and GPU categories over a few seconds, then analyze the resulting JSON for long frames and what's consuming time inside them -- that seems like the most reliable way to pin down whether the stalls are CPU-side GC, main-thread work, or GPU-side synchronization.

Rather than go deep into trace parsing right away, I'm considering a simpler in-page approach: wrap the engine's requestAnimationFrame-driven main loop with performance.now() timing to measure actual callback durations directly, since Lua's GC runs inside wasm memory rather than V8's heap, so it's unlikely to be the culprit.

If callback durations are much shorter than frame intervals, the stall must be happening outside the JS/wasm callback itself—likely in the GPU process or compositor. I'll add instrumentation to the bench page that wraps requestAnimationFrame to record both callback durations and frame intervals, then report percentiles when the benchmark completes, implementing this in build.py before the anchor script loads.

About a fifth of the frames take ~35 ms total while Lua only accounts for ~14 ms, meaning ~22 ms is spent outside the game's code (GL calls, GPU, or browser). I'll now time the engine's frame callback against the inter-frame gap to pinpoint where that extra time goes.

Measuring from the start including warm-up frames will skew things slightly, but I can't easily detect when profiling actually begins, so I'll accept that imprecision and just run it uncapped.

Interesting—there are 2908 rAF callbacks but only 1799 drawn frames, suggesting some callbacks run without actually rendering, perhaps tied to a fixed update step separate from draws. The gaps between callbacks show p50 at 11.7ms, p90 at 24ms, p99 at 31.9ms, while callback durations themselves run p50 8.8ms, p90 13ms, p99 17ms.

This points to a pacing issue: the engine likely uses a fixed 120Hz accumulator for updates, and when a callback's interval is too short to accumulate a full step, it skips drawing entirely. That skipped draw would push the next render out by an extra callback, doubling the apparent frame gap—which matches the 35ms long frames I'm seeing in the bench data.

In the earlier capped-vsync run, callback timing sat at ~17-20ms, just over the 16.7ms vsync target, meaning the game was consistently missing frames and landing around 56.8fps instead of 60.

I should rerun the capped-mode rAF measurement to directly compare callback durations against actual gaps under real vsync conditions.

I see 2,908 frame callbacks but only 1,799 drawn frames—with the cap off, callbacks outpace the game's 120 Hz update, so some get skipped and the next draw appears as a "35 ms frame," making the uncapped long frames a measurement artifact. The capped run is the trustworthy one, so I'll rerun it with the callback timing.

The capped runs show rAF callbacks firing every 17.5ms at p50, meaning the headless compositor is pacing frames at ~57Hz instead of true 60Hz, while the actual Lua callback work only takes 10.6-10.8ms — so the bottleneck is headless BeginFrame timing, not the script execution itself.

This matters for the real-world case though: on his actual desktop with an RTX 2060, the website's own rendering overhead (drawing the site's list UI, etc.) stacks on top of the game's ~11ms per frame. If the site itself adds another ~5ms, that pushes past the 16.7ms budget for 60Hz and causes visible stutter, and this gets worse on slower laptops or high-refresh 144Hz displays where the margin shrinks further.

If his monitor runs at 144 or 165 Hz, the browser fires rAF that often and re-renders the full 3D scene every single callback, meaning draw cost scales 2.4x compared to 60 Hz and could be exactly the bottleneck causing the reported slowdown — since the game only ticks logic at 60 Hz, rendering more frequently than that is wasted work. The fix would be to cap rendering to match the 60 Hz tick rate and skip redundant draws between ticks. Let me check his reference PC setup notes for the actual monitor refresh rate.

The capped run confirms the game isn't CPU-bound on this machine, with ~6ms of headroom per frame. I'll now check the monitor's refresh rate and whether the site caps draws, since high-refresh screens could still force excess rendering.

His main display runs at 165 Hz, so the browser's render loop fires 165 times per second instead of the 60 the game actually needs—nearly 3x the necessary work. That means the engine is redrawing and updating far more often than required, saturating the CPU and causing the frame drops he's noticing.

The likely fix is decoupling rendering from the tick rate: only run the expensive 3D render pass when a new game tick has actually occurred, and otherwise just re-present the previously rendered frame since the page still redraws every rAF call regardless. I'm working through whether the host site's compositing step requires the layer to be redrawn every frame even if the underlying game texture hasn't changed.

If the ui_layer's queue is skipped along with layer_render, icons would vanish since the command queue clears each render — so on skipped frames I need to still call layer_draw on screen_layer and ui_layer to keep their last FBO contents visible, while skipping the actual render/queueing calls like R.present and layer_render.

I also need to check whether hover effects running at 60Hz are fine, and more importantly how the host composites the game's output — if it only registers layer_draw calls per frame to build the composite, then calling layer_draw each frame without re-rendering should still register correctly with the host's compositing mechanism.

This same vsync-frame-rate mismatch issue applies to desktop builds too, not just the hosted web version, so the fix of only rendering 3D content when a tick actually occurred needs to apply universally. Since there's no interpolation between ticks, skipped frames just accumulate render delta time into shader time uniforms, keeping animation continuous; the remaining question is how the game's update loop ties to the engine's per-frame update rate versus the tick rate.

I'm working out the draw logic in main.lua: it should render a fresh frame when a new tick has occurred, but I realize UI-only states (editor open, paused, inspect mode, manual mode) still need continuous rendering since the interface must stay responsive to mouse input even without game ticks. So the rule becomes: skip rendering only during normal gameplay when no tick has happened and not enough time has passed since the last render, but always render during UI-interactive states.

Now I'm tracking how render_acc accumulates engine update time between draws, since the engine updates at 120 Hz while rendering caps at 60 Hz, and I need to make sure skipped frames still properly composite the screen and UI layers rather than dropping them entirely. I want to check how the host's layer compositing and rendering queue actually work before finalizing this.

Found the issue: on your 165 Hz monitor the game redraws its full 3D scene every refresh instead of just every 60 Hz tick, eating the entire ~6ms frame budget. I'll fix it by only redrawing on actual ticks (or at 60fps when paused) and reusing the last frame otherwise—now checking how the site layers a hosted game to make sure those repeated frames still display correctly.

I'm thinking through the engine's layer compositing: if the game only calls layer_draw without layer_render each frame, the layer's FBO retains its last rendered content, so the composite would just keep showing that stale image. I'm trying to pin down whether layer_render actually clears the command queue after rendering, and whether the engine auto-clears layer FBOs at the start of each frame.

The host composites each frame's `layer_draw` calls, so reusing the last render should display the previous image—assuming the engine doesn't auto-clear layer textures. I'll check the engine's layer rules to confirm.

I'm reasoning that layer_render only clears its FBO when explicitly invoked, so skipping it leaves the buffer intact for layer_draw to reuse, and queued commands like HUD.flush won't render unless called. I'm also noting that R.present triggers gpu_end(), closing out GPU state for the 3D render passes.

Tracing through main.lua's draw function, I'm checking how it decides whether a frame is "due" based on tick changes or accumulated render time — if not due, it just redraws the existing screen_layer and ui_layer buffers and returns early, skipping the full render path including HUD flush and layer_render calls for icons.

On skipped draws, the bench frame counter should still count the callback since that reflects what the user actually sees per rAF — treating it as the real-world frame cadence matters more than whether a fresh image was composited. Separately, render_acc correctly keeps accumulating dt across skipped frames so the next real render gets the full elapsed time, but I need to check how this interacts with the 120 Hz game tick accumulator versus a 165 Hz display refresh.

The site's own rendering cost per frame at 165 Hz isn't my concern here — that's a separate performance question I could measure later. I should also confirm the web build's engine loop still runs its fixed 120 Hz update via emscripten_set_main_loop tied to rAF, same as before.

I'll implement render throttling in `main.lua`: the 3D layer only re-renders on a game tick, every 1/60s minimum, or when explicitly requested, otherwise it just redraws the last frame's screen and icon layers.

I need to double-check that render_acc starts at zero and that pausing in the editor doesn't break the render cadence—since the engine update keeps running even while paused, render_acc should still accumulate and cap rendering at 60Hz even at a 165Hz editor refresh rate.

Checking other per-frame visuals like the cursor and hover states, they all seem to route through the same render_dt gating, so they should be fine at high refresh rates too. For testing, I'll need to run uncapped mode to actually surface the 165Hz discrepancy, since the headless capped mode at ~57Hz won't reveal the issue.

Before the fix, every callback would render even without a real tick, burning CPU (~85fps worth at ~11ms each); after the fix, skipped renders should free up CPU and raise effective frame throughput. I think the best metric here is "Lua busy %" — summing update and draw time across the span divided by total span duration — rather than just ms/frame, since ms/frame only counts actual rendered frames and could mask the CPU savings from skipped draws.

I'll verify the frames still line up, then run the measurements—also tracking how much of each second goes to the game's code, since that's the time a 165 Hz screen previously consumed.

Results are identical, which makes sense since the GC change and draw-skip shouldn't affect rendering frames in this test harness. Now I'll run the web benchmark both uncapped, to simulate high refresh rates, and capped.

I'm puzzling over the mismatch between frame counts and rAF callback rates in uncapped mode — it seems like the engine's render loop may only draw when its update accumulator actually steps forward, rather than on every rAF tick, which would explain why draw calls lag behind the raw callback frequency.

So I'm wondering if the engine caps draws to its fixed-update rate (120 Hz) rather than the display refresh rate, meaning at 165 Hz only updates trigger renders, and my earlier fix to halve the redundant draw calls lines up with this.

Testing headlessly can't truly reproduce 165 Hz since each callback is CPU-bound at roughly 9-11 ms, so skipped-draw callbacks after my fix come in around 12 ms apart — about 83 callbacks/s against 60 ticks/s, meaning roughly 72% of callbacks coincide with a tick and render while the rest skip cheaply. I think the better approach is to directly measure how often draws actually render versus how often they're merely called, rather than trying to emulate the exact refresh rate in this environment.

I want to check the engine's main loop logic to confirm the render condition — looking for where the main loop is set up and how it decides whether to render each frame.

Uncapped, the engine only calls draw about 60 times per second despite frame callbacks firing around 74 times a second, meaning it already skips some draws. I'll look at the main loop to see how it handles a 165 Hz screen.

The engine itself caps renders at 60 Hz normally, but uncaps to 165 Hz when no game is live, then re-caps to 60 Hz once a game starts. So while Lich is playing, rendering is already capped at 60 Hz, meaning my draw-skip fix is mostly redundant there—it only really matters when the render cap and tick cadence happen to misalign.

That means the remaining performance concern on the site isn't the 165 Hz issue at all, but raw CPU cost per frame at 60 Hz: the game itself takes roughly 11 ms, and if the site's own per-frame rendering work (lists, effects, text) adds another 4-6 ms, the combined total could creep toward 15-17 ms—right at the edge of missing the 60 Hz budget. Measuring that properly would require running the site and game together in a combined harness.

Actually, there's already a built-in way to check this: the site's `?perf` overlay shows combined update/draw timings including the game host update and composite draw, so he could just open that on the live site, start the Lich game, and read the real numbers directly—no extra tooling needed. I should also consider other possible slowdowns beyond raw per-frame cost, like overhead from the host environment wrappers around every engine call (layer draws, input checks, etc.) and the fact that the game shares the site's Lua VM garbage collector, meaning the GC pacer paces collection for both the site and game together, which could introduce stalls.

With my GC pacing change, there's less work overall since the site's own allocations factor into the stepping too. Since the hosted game runs the same Lua code, its CPU cost should roughly match my local webbench numbers (~11ms) plus whatever host overhead exists on top.

Looking at where that 11ms breaks down, the biggest contributors are r3's draw call, snake rendering, shadows, fx, transmission, projection, matrix work, and gore—in roughly descending order of cost. Given the effort already spent, I'm leaning toward tackling two more optimizations: the transmission effect (especially costly when the lens is out, which happens often) and the snake ground grid, with shadow caching as a possible third target.

Thinking more about transmission specifically, I wonder if true refractive transmission is even necessary when the lens is idle and floating far above everything—the refraction detail would be subtle there, so swapping to a cheaper fresnel/environment-based glass look during idle could save cost, though it would introduce a visible change he might notice.

Actually, keeping visuals untouched is safer, so I'm looking instead at how the transmission pass works under the hood—three.js renders opaque geometry into a half-float MSAA render target with mipmaps, then the transmissive material samples it at a roughness-dependent LOD. Since our lens has very low roughness, it's sampling near the top mip anyway, so I'm considering whether copying rt_world after opaque rendering and blitting it could work instead, which means checking whether the renderer or engine exposes any GPU blit/copy function I could use for this.

The 165 Hz theory doesn't apply to the hosted game since the site caps rendering at 60 Hz once a game is live, so the real cost is the ~11ms CPU per frame plus site overhead — I'll keep my draw cap as a safety net and point you to the `?perf` readout for real-device checks. Next, I'm checking whether the engine has a GPU copy I can reuse for the lens's second world render instead of re-drawing every opaque object.

I'm noting gpu_blit resolves MSAA and blits between targets, and that gpu_mesh_update's offset parameter could allow partial buffer uploads — though building sub-tables for that each frame would create garbage overhead, making it only worthwhile with some precomputed structure.

For the transmission effect, I'm considering gating a new blit-based copy path behind a renderer flag the game sets only in the varied flow, since LICH_ROOM needs visuals matched for parity. The render loop would check whether transmissive objects exist and whether blit mode is active, falling back to the normal transmission pass otherwise, then after drawing opaque objects, blit the already-rendered opaque world as the transmission source before compositing transmissive objects on top.

Working through the MSAA resolution details — I need a non-multisampled target to blit into so sample counts match, then call finish_target to resolve and generate mipmaps, rebind to the render target, and confirm the content persists across the rebind so transmissive and transparent draws layer correctly on top.

One key format constraint I'm catching: the blit requires matching float/fixed-point types between source and destination, so if rt_world uses half-float, the transmission RT must also be half-float rather than something like RGBA8, since mixing normalized and float formats isn't allowed in GLES3's blit.

I'm also checking content differences—clear alpha semantics match since the world target clears with alpha 1—and considering the double-sided back-face case: since the lens glass material defaults to FrontSide, the "draw back faces again" branch from three.js's transmission pass wouldn't trigger here, but I should keep that logic in mind for any transmissive material that is explicitly double-sided.

The transmission RT uses MSAA with mipmaps while the blit version resolves from MSAA without it, which should still be equivalent in practice, and since both RTs match in size and camera, the transmission image should be nearly pixel-identical to the opaque portion of the world render, aside from small differences in lens areas from resolve/format changes. I'm now thinking through the CPU savings this approach would yield.

I can use `gpu_blit` and `gpu_mesh_update` to grab a copy of the world target right after opaque objects render, avoiding a second CPU-heavy render pass like three.js's. Now checking the render-target setup and `finish_target`.

I'm setting up the render targets: a half-float world buffer without MSAA, and a multisampled transmission buffer with mipmapping that gets blitted into a non-MSAA mipmap target for sampling afterward.

The old transmission pass had antialiased edges from 4x MSAA while the world buffer is pixel-art and unaliased anyway, so losing that AA when copying to the mipmap target isn't an issue. Now I want to check how RenderTarget.new in renderer.lua handles the samples parameter and the resulting gpu/msaa/mipmapped fields.

I'll implement a plain copy pass into a half-float mipmapped target matching the lens sampling, enabled only for the game's normal flow, while leaving the room test and double-sided glass fallback on the old pass unchanged.

I need to initialize transmission_copies in the Renderer constructor near where transmission_targets is set up. I'm also checking whether cur_prog needs resetting after a blit—since GL uniform state is tied to the program object itself, blits shouldn't disturb it, so caching should remain valid.

I'll keep the forced reset of cur_prog for safety since the lens material differs from the opaque pass anyway, triggering refresh_mat. I'm confirming gpu_blit's signature resolves MSAA correctly and rebinds the target afterward, and I should enable renderer.transmission_copy in game.lua when VARIED mode is active, near where the game object is created.

The new warnings are just expected engine global usages, so that's fine. Now I want to compare frames across the probe, since a lens may or may not be visible at each capture tick, and I expect differences to appear only in lens regions when one is actually out—so I'll check which frames have a lens visible.

These frames are all identical, so either no lens appears here or the copy is pixel-perfect. I need a test case where a lens is actually visible, forcing one to appear at a specific tick and capturing frames while it forms and fires, then comparing runs with transmission_copy toggled on and off within the same session.

I'm figuring out how to render the same state twice: using GAME.step(0) to advance zero ticks but still trigger a render with dt=0, so I can snapshot with transmission_copy false, then set it true and re-render that identical state without time passing. I'll run this comparison at three different moments while a lens is active and visible, capturing snapshot pairs to check for discrepancies.

Those identical frames don't prove much unless a lens was actually visible in them. I'll run a more direct test: wait for a lens to appear, then render the same game state twice—once with the old pass and once with the copy—at three different moments.

It's suspicious that the result looks identical even with the lens removed—maybe the transmission copy doesn't visibly affect the lens, or the MSAA difference just isn't noticeable at the final downscaled resolution. I'm wondering if the render path actually changed when I toggled the flag, since the copy condition depends on transmission_copy being set and the target existing.

I'm reasoning through why the MSAA resolve pass and the non-MSAA copy should produce pixel-identical results at the sampled interior points, since both sample the same opaque geometry at the same resolution with nearest filtering. Satisfied that equality holds, I'm moving on to measuring performance with a capped web benchmark.

Then I should check the digest: renderer changes only affect VARIED while LICH_ROOM stays untouched, and the GC change shouldn't alter anything since there are no finalizers to reorder. I'll run the web benchmark now.

Transmission time dropped from 0.82 to 0.04 ms/frame, so the "ok+lens" classification rarely triggers now since it requires transmission over 0.3ms. Overall web CPU per frame improved from 14.28 to 11.06 ms, a 23% reduction, with Lua busy about 63% of the time.

Looking at what remains: r3.draw is now the biggest chunk at 3.36, followed by snakes at 2.6/tick, then shadow, fx, project, matrices, gore, warp+view, and bloom trailing off. I want to dig into r3.draw next — likely remaining mesh uploads for fx particles, leak flakes, and gore splats, plus per-draw uniform overhead — so I should re-measure the native fine profile to see what's left in d.mesh after the warp optimization.

Lens render time dropped from 0.82 to 0.04 ms, cutting total web CPU time from 14.3 to 11.1 ms per frame (23% faster); remaining costs are draws (3.4), snakes (2.6), shadows (1.0), particles (0.8), culling (0.5), matrices (0.4), and gore (0.3). I'll now re-profile the draw calls natively to check what's left of the uploads.

Halving the float uploads dropped mesh update time roughly in half. Now I'm looking at the remaining cost from the instanced flakes' matrix uploads, both in the main pass and the shadow depth pass, trying to figure out if that upload is happening redundantly per frame.

For the fx system, I'm wondering whether gpu_mesh_update supports uploading just a live subrange rather than the whole buffer when only a few particles are active — checking whether its offset parameter applies to source and destination or just the destination, which would determine whether partial uploads are even possible.

Uploads dropped from 257,000 to 134,000 floats per frame, cutting the mesh step from 2.27 to 1.14 ms, with remaining cost spread across leak flakes and particle/ribbon buffers. I'll check whether the engine supports partial buffer uploads so particle systems can send only their live particles.

I notice the replay recorder captures every mesh update for APR replays, which could be expensive if recording is active during web uploads. Recording is likely off on web but on for his desktop dev runs, which could explain the desktop-specific cost.

Given diminishing returns on uploads, I should shift focus to the remaining big costs: r3.draw at 3.36ms on web, snakes at 2.6ms, shadow at 1.0ms, and fx at 0.8ms. The snakes' build loop seems like the best target now — I'm checking what's expensive per ring beyond ground computation: the RK/GL branch is cheap when leak is zero, trail walking amortizes fine, but the smoothstep calls for raise length and sag appear to be recomputable per-ring constants that could be cached once instead of recalculated every tick.

Looking further, sink_depth per ring is also a per-snake constant that can be hoisted out if it's pure, same for the spine copy and float rounding calls. Exact hoisting could save maybe 20-30% without changing behavior, versus the riskier ground-grid approach which would save more but introduce sub-millimeter position differences that, while invisible to the user, could break consistency with other systems relying on exact ground values like where gore lands.

For the ground caching plan, I'm weighing memory and GC costs — a 512×512 heightfield grid at 0.0625m resolution covering the room would be roughly 4MB as a Lua number array, which means the garbage collector has to traverse 262k entries during each sweep.

Precomputing this at load time would cost about 0.2s natively but closer to 0.5s on web, which is risky given web boot is already slow from shader compiles. So I'm leaning toward lazy evaluation instead — cache grid cells on demand as snakes need them, keyed by integer index in a hash table, with bilinear interpolation between corners giving a close-enough approximation to the exact value.

Checking the error magnitude: given the terrain's noise frequencies (~0.9-ish with fbm octaves), bilinear interpolation error works out to roughly 1mm with a 0.0625m grid spacing — totally fine visually. The ridge term's creases are sharper and could have a few mm of error there, but that's still negligible for what's being rendered.

Estimating the actual savings from caching the ground height lookups: dropping from 0.78µs to ~0.25µs per call, times 72 calls per build, saves about 36µs out of 270µs total — only around 13%, which is modest. Hoisting the smoothstep computations might add another 10-15%.

The bigger opportunity is probably in the draw calls and uniform setting — 184 draws each setting matrices and flags through Lua-to-C table reads. I'm wondering if caching matrices per object (skipping redundant uniform sets for static geometry whose transform hasn't changed since the last draw) could meaningfully cut this cost, especially since the camera is static in many frames.

But I realize that caching won't work well here since uniforms are shared per program and each object's draw overwrites the previous one, so consecutive draws rarely share identical values unless the exact same object draws twice in a row with the same program — which mostly doesn't happen. I'm also considering whether material uniform writes (47/frame) could be cached per program-material pair, and whether gpu_set already short-circuits unchanged values internally.

At this point I think it's time to wrap up this session's performance work with a solid report covering the harness, the measurements taken, and the roughly 23% CPU reduction achieved.

Before finalizing, though, I want to verify a few things about deployment: whether the site's engine build supports gpu_blit for transmission copies (it does, since finish_target already uses it for MSAA), whether warp chunk meshes are fine, and whether the deployed site engine build is compatible with what was tested locally. I also want to run a final digest check to confirm the GC pacer tick, which runs globally in LICH_ROOM, doesn't interfere with or alter game state.

Warp chunking rendering also happens within LICH_ROOM but is draw-only, using unchanged RNG draws, so it shouldn't affect state either — the digest check should come back identical, so I'll run it. As for the fine-grained profiling instrumentation scattered through the renderer and snake drawing code, those are just cheap boolean checks per frame and are negligible, so I'll leave them as is rather than cleaning them up.

I should keep the fine-grained profiling hooks since they're useful for future debugging, but document PROF.fine properly in prof.lua. After that, I need to update RECORD.md for round 81, commit the work, and add a "Performance" section to CLAUDE.md explaining how to run both the native and web benchmarks. Then there's the site deployment to think about — the hidden logs line is committed but needs deploying, and the Lich admin copy needs syncing and deploying before these performance fixes actually reach production.

I'll ask him about running sync+pack+deploy with --data, then run the digest plus one final native bench to wrap things up.

The remaining optimizations require engine changes that need a separate deploy, so I'll stop here for now. Next I'll run the room-test digest to verify the collector, warp, and draw changes, then record and commit the results.

I should also check that the hosted site path still works given the draw-skip changes, since it returns early on skip without calling R.present. I'm thinking about running the site unlock test headlessly against the lich-survivors game directory to confirm the game runs, the egg opens, and the unlock calls fire correctly, possibly reusing the existing site snd probe setup.

The hosted version works fine end-to-end including the egg opening and unlock, with no game errors. I want to grab one more visual snapshot of the hosted game mid-play at the egg moment to confirm the draw-skip isn't causing any flicker or black frames in the composite.

Both frames look good, rendering properly with similar brightness across consecutive draws. Now I need to log round 81 in RECORD.md, update CLAUDE.md with the performance testing method, update the prof.lua docs for fine mode, and fix a comment in main.lua about the 165 Hz claim—since the site already caps at 60 during live games, this cap is just a safety net for uncapped desktop scenarios.

Both frames render correctly, confirming the skipped-draw path works without flicker. Now I'll fix the draw-cap comment to reflect the existing 60 Hz cap during live games and add documentation on running the benchmarks.

I'm considering whether the infinite-loop agent eval is acceptable, and noting that since scratch/ isn't committed to git, the frames_probe and cmp_frames tools referenced in CLAUDE.md should probably be moved into the committed tools/webbench/ directory instead, since frames_probe.lua is generic enough to live there.

Let me move the files and update their paths, then proceed to record round 81 and commit.

I've committed, leaving sound_picks.lua uncommitted since he's still editing it. Now I'm figuring out what remaining actions still need permission—deploying the site content changes and the renderer bundle, since the front.lua edits mean a renderer deploy is required through tools/deploy.sh.

I also need to sync the Lich admin copy, pack it, and deploy --data so the live admin game gets the perf fixes, lens familiar, pacing, sound picks, and land event—that's a separate ask from the content deploy. I should also update the Lich memory and MEMORY index with this session's performance tooling and hidden logs work before wrapping up.

I'm wrapping up the final reply now, confirming the UI is hidden, and considering whether the homepage screenshot in scratchpad—showing only public content—is worth sending to the user via SendUserFile.

I'll also cover the performance harness findings, fixes, and next steps, ask about deploying the site content and renderer plus syncing the game admin copy, and note Steamworks for next session. I'll go ahead and send the screenshot.

I'm looking at how main.lua decides a click folds an open entry only when nothing inside it—links, media, controls, or a game—already consumed it, so games need to properly claim clicks on their canvas to prevent the containing post from collapsing.

The real problem seems to be edge cases where the game doesn't capture the click (frameless games, margins inside the post but outside the game's rect), causing the post to fold and hide the game unexpectedly. The fix is either to exempt game posts from body-click folding entirely, or restrict folding to clicks on the post's title row rather than anywhere in the body—leaning toward the simpler route of never folding games except via the row header.

I need to figure out how to detect which entries are games, including ones with embedded smaller game elements versus full-bleed frameless games, since the fold-exemption should probably apply narrowly. I should check main.lua's existing fold logic to understand why clicks on the game aren't already being intercepted before the fold happens.

The fold is skipped specifically when the game is capturing the mouse, so I'm thinking through edge cases—like the initial cover click before the game starts capturing, where that first click would still fold the post since capturing is false at that moment.

Rather than track every edge case, I decide to implement the simpler rule the user wants: entries that are games or contain a game element shouldn't fold from body clicks at all, only from clicking their row directly. I need to make front_fold return nil for these cases, but I also have to watch out for the scroll-snap logic, which could still scroll to the entry even when it isn't folded—that's a side effect I need to guard against.

Writing fold logic...

I should check whether ui_mouse_clicked should still propagate when the post isn't folded, since a click on a game's body wasn't captured by the fold handler. I also need to verify _frameless gets set correctly for entries in front_doc.

Now I want to test this with an actual game entry on the homepage — find one with type game or prototype, since games default to open, and simulate a click on its body outside the game rect to see what happens.

Before the fix it should fold, after it shouldn't. Clicking the row title should still toggle correctly. Time to implement this and run the test.

Found the issue: body clicks fold posts even when a game is capturing the mouse, missing edge cases. I'll make game posts only fold via their row (not body clicks), keep normal posts folding as before, and stop non-folding clicks from triggering layout/scroll.

I'm thinking through a headless test approach: drive the site to the Skyland entry, scroll it into view, and figure out where to click so it doesn't get captured by the game's own input handling—maybe in the padding area before the game actually starts, by waiting for the document to load first.

I'll scroll the entry into view, step a few frames to let the game start, then click a point inside the entry's body but outside the actual game rect (like the left edge), inject that click, and verify the entry stays open. Then I'll test clicking the row title to confirm it still folds, and also verify normal (non-game) posts still fold on a body click as before.

I'll test Skyland's open game entry on the public homepage headlessly: clicking inside its body away from the frame should keep it open, clicking the row should fold it, and clicking an ordinary post's body should still fold it.

That click location at (-6,130) is actually outside the game's bounding area, but since the game spans full width, there's no real "body outside game" region to test there. Clicking directly on the game itself gets captured by the game, so the fold wouldn't trigger anyway in that case.

To actually reproduce the bug he reported — where clicking collapses the post — I need to simulate the scenario where the game area receives a click but isn't capturing the mouse yet, like right at the moment the game starts. I could force game_host_captures_mouse to return false during a click inside the game area, mimicking the uncaptured state, then compare old vs new folding behavior at that point.

That run didn't actually exercise the bug since the click fell outside Skyland's full-width frame. I'll redo it by forcing the uncaptured case—clicking on the game while the host hasn't grabbed the mouse yet—and compare against the old code.

I've confirmed the old code folds while the new version keeps it open, and that row clicks and ordinary posts still fold correctly. I double check the git stash only affected front.lua and main.lua, so other sessions' modified files are untouched and properly restored, and now I'm planning to run the static check, add a REDESIGN note, commit, then ask about deploying — bundling in the fact that this change also requires a renderer deploy.

I'm working out the deploy sequence: sync the Lich admin copy and pack the games, then figure out whether the renderer bundle changes also need deploying through the dedicated deploy script, since my notes specify deploys should only go through renderer/tools/deploy.sh.

I need to check deploy.sh's actual flags (--content, --data, --engine) and read its usage header, along with my memory notes on deploy order and the new push hook, to confirm the right sequence. I'm also confirming that syncing sound_picks.lua will correctly pick up his latest edits, and checking whether the VPS deploy requires the site repo to be committed and pushed first given the push hook note.

I'm trying to recall the correct deploy order from a previous session — whether the site repo needs pushing before running deploy.sh, and checking if deploy.sh has a dirty-check that flags uncommitted .py files from other sessions.

Since those dirty files (fetch_tweets.py, media-meta.json, etc.) belong to other sessions and aren't part of the renderer bundle or deployed data, using --allow-dirty should be safe. I want to check deploy.sh for any push/git-ahead requirement to confirm the right order.

I'll check deploy.sh's requirements—clean tree, pushed commits, and how it handles other sessions' uncommitted files—since the server has a hand-installed push hook and a deploy order to follow.

The renderer files are already committed, and the dirty files like Python tools and media-meta.json don't count toward the bundle, so I don't need --allow-dirty. I'm now checking whether I touched any server-side code and whether deploy.sh actually pushes to the production remote.

Since deploy.sh syncs data via rsync rather than pushing commits, I'm weighing whether to push the site repo now versus letting session-end's anchor continue handle it — given deploy.sh just checks prod for missing posts, being ahead locally seems fine, and the hidden logs data comes through the deployed render directory either way. I'm also noting that on-site posting works differently, since the VPS-side compose commits directly to the VPS repo and runs convert there.

Pushing now would ensure the VPS has the newer convert.lua so on-site posts don't lose the hidden_logs field, and since the user already said yes to deploy, I'll treat the push as part of that. My plan is to check what's unpushed with a fetch/log diff, push to trigger the post-receive smoke test, then run the data sync step of deploy.sh — though I need to confirm whether --data actually reconverts anything.

Since bootdata packing already pulls from the locally regenerated data/index.lua, the hidden_logs should already be included in the bundle rebuild, but I want to rerun convert to be safe. I'm avoiding --content since that triggers slow media pulls and touches browser cookies, so I need to check the deploy.sh conditions to see exactly when convert runs under --data versus default.

The renderer code is committed, and the remaining uncommitted files belong to another session so no override is needed. Now checking which deploy mode re-runs the converter without triggering `--content`'s media pulls.

Convert only runs with FETCH, so with --data it just uses the existing local data as-is since nothing's changed in content. I should run convert --changed manually first since it's cheap, then sync and pack Lich, then run deploy.sh --data to rebuild the bundle, deploy, and sync data including admin games data.

Yes, deploy.sh --data syncs the admin games directory too — pack_games.py mirrors the Lich survivors game with a manifest, and deploy handles the lazy data pages and asset mirrors, matching the NEXT_SESSION plan to sync, pack, then deploy with --data. For ordering with the push, deploy.sh uploads hashed assets first and flips the engine-boot file last, while pushing triggers a server-side checkout of the content repo; either order works since the server doesn't use front.lua, but I'll deploy first and push afterward to keep things safe against any on-site posting that could rewrite the index with an outdated convert. Time to run it.

Deployment synced 25 changed files, including the game's copied assets and the index data embedded in the boot bundle. Next I need to push the site repo to prod, but first I should check the ahead/behind status before running the post-receive smoke test.

I've deployed the new bundle, updated boot data, and pushed the 25 changed data files including the admin copy. Now pushing the site's commits as well so its converter also writes the hidden-logs line.

All 6 commits here are mine from this session, so it's safe to push to prod — the post-receive hook will run smoke tests automatically.

Deployment succeeded and smoke tests passed, so now I want to verify the live boot data actually includes hidden_logs. I'm thinking curl isn't a browser, so it should be safe given the memory warning about headless browsers downloading files from a327ex.com — running curl over SSH on the VPS seems like the safest way to check.

It's live now, so I can keep my report brief. I should still flag that the session needs a proper end-session step, and that the lich-survivors repo hasn't been pushed yet.

I need to figure out who should see the hidden logs indicator — likely readers who've unlocked new posts but can't yet see the gated logs themselves, since viewers with full cookie access already see everything directly. The line's purpose is to signal to that unlocked-but-not-full-viewer group that hidden content exists.

For admin specifically, since he's effectively a full viewer, the line probably wouldn't show in his normal admin view, but it should still appear during his "view as public" testing flow once posts are revealed, so he can verify the behavior works correctly. I need to check how the client distinguishes rungs — likely through the gated index merge logic in main.lua, where fetching index-posts.lua versus index.lua determines whether someone is a reader versus full viewer, and I should look for an explicit rung flag there.

I'm working out the gating logic: the hidden-logs row should appear when the device scope is "posts" (reader-level, unlocked posts but not logs), and I need to also account for the admin's "view as public" mode in that same condition.

I'm writing a hidden_of(index) helper that returns the hidden-logs object only if logs exist and are updated, and the viewer is either a true reader (GATED_SCOPE == 'posts') or an admin simulating public view after its test unlock has revealed them — otherwise it returns nil. Now I'm checking the edge case where an admin is in VIEW AS PUBLIC mode but hasn't triggered the reveal yet, making sure GATED_SCOPE doesn't leak admin-level access in that state.

I also need the sig computation to include the hidden-logs state so the front doc rebuilds correctly after a reader unlocks posts, since the sig changes from '-' to a real value once hidden_of starts returning something. One remaining concern is that the hidden-logs row isn't included in the captured rows during the unlock animation, so instead of building in with the letter animation like the newly revealed posts, it would just pop in abruptly.

Thinking about whether to delay drawing that row until the unlock animation finishes, since right now it appears instantly while the other rows are still mid-animation. I could skip drawing it entirely while UNLOCK_FX.run is active, letting the layout leave an empty gap in its place until the animation completes.

I'll keep it simple: skip drawing the hidden row during the unlock animation and just let it appear once the letters finish. I need to confirm UNLOCK_FX is globally accessible in front.lua, then wire up the check and test it both with public desktop (no row) and with GATED_SCOPE set to 'posts' (row present) via a refresh and element check.

The row only displays when `GATED_SCOPE` is `'posts'`, not for public or full-viewer states, and it stays hidden during the unlock animation until the letters finish rather than appearing early.

UNLOCK_FX, view_public, and GATED_SCOPE are all globals resolved at call time, so their definition order relative to main.lua shouldn't matter. I should test headlessly: public mode hides the row, but forcing GATED_SCOPE to 'posts' and rebuilding should make the row appear.

I should also verify the admin view-as-public path and the reveal logic, checking that view_public() correctly returns the forced or stored setting when both force_public and revealed flags are true.

Since the current live version is wrong relative to his request, I should fix and redeploy promptly — he already approved deploying this feature, so pushing this correction is a natural follow-up within that same approval. I'll redeploy just the renderer bundle using the deploy script without extra flags.

I'm looking at the ending sequence timing — the snakes coil around the egg for about 2 seconds too long before it breaks. Need to tighten that gap between the lich dying, the snakes bursting, and the egg rocking open.

For the gore chunks, some land balanced upright which looks physically wrong; I should make them settle into a stable resting orientation, like lying on their long side, by checking gore.lua's physics handling.

For the hidden logs line, it should build in with the unlock effect letter-by-letter like other rows, and match the site's attribution-line style — faded, non-bold, italic.

I'm also figuring out how the unlock effect's lock icon logic applies to the hidden row, since it needs its own lock treatment while still feeding into the same unlock_fx letter-flying mechanism.

Right, draw_row bails out early when a row is marked hidden, which is generic enough to cover this case. So I need unlock_fx_post_refresh to also recognize the hidden row by tracking whether it existed before via a special marker, and make sure its lock state is set to not burst while letters build, since its own lock icon is handled separately by draw_row once it's no longer hidden.

I also need to make sure the hidden row doesn't trigger lift/burst sounds since its lock never breaks. But the current logic checks `lk.state ~= 'broken'` to determine if locks are done, which means a 'none' state row would block completion forever — I need to treat 'none' as already done, and double-check that row counts used for sound indexing account for this properly.

The hidden row's position relative to the reveal comes from front_doc rebuilding with the row inserted, wrapped by unlock_fx_pre_refresh/post_refresh diffing. Since the goal is for it to be built by letters rather than just popping in, I need to remove the UNLOCK_FX.run skip so it participates in the run; I should also check how byline/attribution styling (dim italic "Written by" text) is rendered in convert.lua and the renderer to match that look.

I'm checking how the byline color is set for the 'byline' kind, likely tied to a dim prose style, and noting that in the current theme, small_italic metadata actually renders upright rather than italicized per the theme documentation.

Since he wants true italics, I need to check if there's a dedicated italic font for body emphasis that could work for the row title size, comparing it against the bold UI font to see which better matches, so I'm scanning the current theme's font table to see what's available.

Row titles use ui_bold at 14px, but for the hidden row's italic text, the only italic option in the table is prose italic at 16px, which would look slightly larger than the titles. I'm weighing whether to just use that 16px italic or add a new ui_italic 14px font key across all theme tables.

For color, I'll use the dim/faded style matching the date column — that fits the "faded" attribution look. As for the lock icon, I think it should stay since it signals the row is still locked, consistent with the unlock burst effect for other rows. Now I want to check how the unlock effect and lock handling code actually works.

I'll add a `ui_italic` style (Arial Italic 14) with fallback to body italic, drawing the line in the dates' faded color, then move on to examining how the unlock side selects rows and runs their locks.

I'm trying to figure out where the hidden row falls relative to the revealed gated posts, since those span dates from Sep 19 to Oct 13 and the rows are built bottom-up by descending date — so if the hidden post's date of Oct 14 is later than all the revealed ones, it should sit at the top.

Looking at the lock state machine, I'm tracing how each row's lock cycles through 'wait', 'whole', and 'broken' states, triggering an unlock call once held long enough. For the hidden row specifically, I want its lock to start in a 'none' state that skips the wait/whole transitions entirely and still counts toward locks_done, so I'm adjusting the completion check to treat 'none' as equivalent to 'broken' for that purpose. Now I need to find where the lock graphic itself gets rendered so I can suppress it for this row.

I'll add the hidden-logs row to the build with a lock state of "none," so its letters animate in but nothing breaks or sounds, while its lock icon remains since those logs stay locked. Now I'm locating where the unlock logic draws the per-row locks.

I'm working out how hidden rows should behave in the unlock system: marking hidden elements so the lock state treats them as already satisfied ('none' instead of 'wait'), and making sure capture still draws each row correctly even when hidden.

One bug I spot: an early guard I added that returns early when UNLOCK_FX.run exists would prevent the hidden row from drawing anything during capture, killing letter generation for it — I need to remove that line since the hidden state is now handled through the generic _fx_hide mechanism instead. I'm also checking that pitch mapping, lock icons, anchors, and the reset/update logic for _fx_hide all correctly account for hidden rows without special-casing them unnecessarily.

Separately, I'm adding an italic UI font entry and making sure other themes fall back gracefully to the regular italic if the new key is missing, which means I need to check how theme.lua iterates and loads font tables to confirm it'll pick up the new entry and that the font subsetting script includes the italic face at the right sizes.

Found that the unlock icon only renders for rows in the "whole" state, leaving "none" rows with their default icon. Now I'll check how the theme loads fonts so I can add a new `ui_italic` key.

The loop registers every font role, so adding the italic role gets picked up automatically. Checking the typeface switcher, it swaps roles in place by matching against SANS's regular/bold/italic mapping, so the new italic role stays consistent when switching typefaces.

Now I'm patching front.lua: removing the early-return guard on UNLOCK_FX, and drawing the hidden-logs text in a dim italic font while keeping the date column in the meta font. I need to check whether draw_text_fallback's role parameter handles an unregistered 'ui_italic' role or if I should just call layer_text directly, especially since the long status string risks overflowing narrow screens and needs truncation with ellipsis — so I'm checking that function's signature.

I'm using nil-safe fallback fonts for CJK text with matching vertical alignment to the bold italic size, then preparing the actual patches for theme.lua, front.lua, and unlock_fx.lua.

I'm checking that the row-locking logic only sets `_fx_lock` on rows that actually have a record, skipping hidden rows without one, and confirming the burst/land sound effects only trigger appropriately for unlocked rows versus letters.

For testing, I need to verify the headless desktop unlock flow works end-to-end — triggering the egg, clicking through to the ending, and confirming the hidden row appears in `run.rows`, becomes visible after the run, and its letters actually animate in. I should also grab a screenshot of the final list to check the italic line renders correctly.

Only one row got built this time, just the hidden one — unlike the earlier probe that showed 16 rows with 673 letters. It seems the gated posts weren't revealed on this pass, so maybe the first refresh after arming only picked up the hidden row rather than the full set.

Actually, I think the gated posts might not be in the index yet on this run since they need a separate fetch—so if they merge a frame later, and the hidden row alone already made `#rows > 0` on the first refresh, that could consume the arm prematurely. That's the bug: the hidden row "steals" the arm, so when the gated posts arrive later, they're no longer armed and show up without being revealed properly.

The fix needs to ensure post_refresh doesn't consume the arm with only the hidden row—it should require at least one gated post row before starting, though that creates a timing issue where the hidden row might flash visible for a frame before the posts arrive.

I'm working out a solution where, if only the hidden row is new, I mark it with a hidden flag while waiting for the posts, and add a timeout fallback to unhide it if the arm expires. The implementation reuses the same hidden element table across rebuilds so the flag persists correctly, and now I need to check how this interacts with the real unlock flow on the live site rather than just the test path.

The same race condition can occur when GATED_SCOPE flips to 'posts' before the merge completes, causing a premature refresh to expose the hidden row — but this should be covered by the same fix. Time to patch this and run the tests again.

Found the bug: on first refresh the hidden row renders before posts arrive, triggering the unlock prematurely and leaving the 16 posts without letters—this can happen in the live reader too. Fix: when the only new row is the hidden one, hold it unseen until posts arrive and build together, falling back to showing it after the 20s timeout if posts never load.

Now there are 17 rows total—16 posts plus the hidden top row. Let me check the screenshot to verify this looks right.

The snapshot still shows the egg game filling the window instead of the page scrolling to the list, so the fill game seems to be drawing over the page at its own position. I should try scrolling to the hidden row and checking the full screenshot instead.

I'm trying to reconcile the row position at scroll 0 with the screenshot showing the egg game dark overlay — it seems the FILL game element composites over the entire window regardless of scroll position, which would explain why the list rows aren't visible even though they should be near the top.

Maybe the FILL game's element sits near the top and draws over the viewport regardless of scroll, which would explain why the screenshot keeps showing the game instead of the revealed row. Rather than fight with this further, it'd be simpler to just test the list rendering directly — set GATED_SCOPE to posts, rebuild the plain site without the game, and snapshot to confirm the italic row shows correctly.

relayout is probably scoped locally to main.lua, which would cause an error here, so I should use the global site_front_refresh() function instead.

The attribution row now renders faded and italicized, which looks right even though gated posts aren't merged in this desktop test. I'll commit the site redesign changes first, then move on to the game fixes: the snakes lingering too long before the egg breaks, and gore chunks landing upright instead of naturally.

I'm tracing the ending sequence in game.lua and eggphys.lua to pin down the timeline: coverage complete, snakes coiled around the egg, death, snakes bursting, egg rocking and breaking. The feedback that the snakes linger around the egg "2 seconds too long" makes me want to clarify whether that delay happens before the burst or after death but before the burst begins.

Tracing the win sequence: once the egg is covered, the camera moves in, silhouettes fade in, then after a 4-second hold the egg breaks, snakes burst out, wobble, and the hatch zoom plays. I'm noticing the snakes linger around the egg for about 2 seconds longer than they should before it breaks.

So shortening by 2s before death means DIE.hold goes from 4.0 to 2.0. I should double-check whether the server's unlock logic has any minimum run-duration requirement that this change could interfere with — worth a quick look at the unlock check timing.

I've mapped the ending sequence order and plan to shorten the DIE.hold from 4.0s to 2.0s, the duration the snakes sit around the egg. First I'll verify the server's unlock check doesn't rely on tight timing that this change could affect.

The 60-second minimum from ticket start is easily satisfied given the full run. Now I want to check gore.lua to see how the gore chunks land and rest—whether it's custom physics or something like Box3D.

I'm checking that the resting logic already handles tube pieces by tilting steep axes down toward horizontal, with a threshold allowing about 11.5° of tilt before correction kicks in, so pieces seem fine on their own.

For the debris pool though — ribs, scraps, lumps, vertebrae — orientation is just whatever free Euler spin they had mid-flight, so a rib could land standing upright or a scrap could rest on its edge, which looks wrong physically. I'm thinking the fix is to settle each debris piece into a stable "lying flat" pose on landing: preserve its current heading but rotate so its longest axis goes horizontal and its shortest axis points up, accounting for each mesh's shape and any non-uniform scaling.

I'm sketching the settle logic: trigger it once the vertical velocity drops near zero, compute the object's bounding-box extents times its scale per axis, find the thinnest axis, and build a target rotation that aligns that axis with world up while keeping the current heading, then interpolate toward that pose over a short window so it looks like the object topples into place rather than snapping.

I need to check whether the Euler helper supports setting from a quaternion in the math module, then work out the final resting height using the half-thickness along the thin axis combined with the object's scale factors, making sure the composed transform matrix uses consistent units.

I also realize near-isotropic shapes like the dodecahedron don't have a clear thin axis, so forcing a settling rotation could cause odd unnecessary tumbling — better to skip settling entirely when the max/min extent ratio is small enough.

I'm also worried about determinism: gore debris orientation might be baked into the LICH_ROOM digest, so changing resting y-values could break reproducibility. I should gate the settling behavior behind a flag that's only enabled where digest stability isn't a concern.

I'll make debris pieces (meat, ribs, skin) tip onto their thinnest side when settling, like tube pieces already do, while leaving round pieces like vertebrae untouched. Now checking if the room-test digest covers gore to decide if this fix belongs behind the game-flow switch.

I'm checking whether gore's RNG call affects the digest sequence—since my settle path doesn't touch rng, the sequence stays unchanged, but I'm weighing whether to gate the LICH_ROOM visual difference behind a flow flag even though it shouldn't affect digests either way.

To be safe I'll gate it with a `gore.settle = VARIED` flag. Then rather than storing Euler angles for rested debris, I'm switching to storing a quaternion per piece: computing the local axis with the smallest extent, determining whether any face is "flat enough" to settle on, picking the up direction, and building a rotation that aligns that axis to world-up—storing both the pre-settle and post-settle quaternions for interpolation.

I'm setting up the tipping-over animation so debris falls onto its flattest side: easing the quaternion and height from upright to resting pose with a slow-start, fast-end curve (mimicking gravity), and once the tip finishes, locking in the final quaternion for pose. The pose function then checks whether a piece has a settled quaternion and uses that directly, otherwise falling back to Euler-based rotation—I still need to verify the exact quaternion API methods for unit-vector alignment and slerp.

I also need to make sure the resting branch keeps rendering pose updates during the tipping phase rather than switching pose off too early, and that sinking debris switches from Euler to quaternion-based pose once it has a settled orientation, with a roughly 0.22-second tip duration for a believable fall.

For the tube pieces (the "snake bits"), the lay-down threshold at |V.y| > 0.2 allows resting tilts up to about 11.5°, which seems reasonable, but I should double-check that pieces already near-vertical don't get flattened unnecessarily when they're close to their final resting orientation.

So the correct resting orientation should have the piece lying flat, meaning its best-fit plane is horizontal. I can find that plane's normal via the samples' spread (smallest-variance axis, essentially PCA), and for an arc that normal comes from the chord and midpoint offset; for a straight piece that axis is ambiguous, so I'll fall back to the existing lay-down logic.

For pieces, I should compute this normal in local space using the chord vector and the bulge (midpoint deviation from chord midpoint): if the bulge is large enough relative to chord length, the piece is curved and the normal is the cross product of chord and bulge. Then I rotate that normal (transformed to world space) to align with up, tipping it over gradually with easing, while also generalizing the existing ground-contact correction loop that nudges y until the lowest sample touches the ground.

That twitch rotates around the piece's own chord axis as a decaying sine wiggle, amplitude fading over about 2 seconds, small enough not to disturb the settled look. I need to check which Quaternion helper methods are available in the engine, like set_from_unit_vectors and slerp.

I've traced the issue to how arc-shaped tube pieces settle—they can land standing up like a hoop instead of lying flat, so I'll fix the tipping logic for curved and debris pieces to fall naturally onto their correct resting side. Next, I'll check the quaternion helpers needed for that.

All the helper functions exist, so I'm figuring out how to compute bounding boxes for the debris pool geometries, pulling half-extents from the min/max of each geometry's bounding box and accounting for any center offset if the geometry isn't centered.

Working out resting height after tipping: the final half-thickness combines the instance scale with the geometry's half extent along the thin axis and the per-axis scale factor. Now I'll write the patch with the Write tool.

I need a local flag table declared early in the create function, like a settle state, so the game object can expose and check its settle status alongside the other returned update/burst functions.

I'm adding a settle flag to the gore table's API with a setter function, then wiring game.lua to enable it when VARIED mode is active. I'll update the patch script to include this definition and setter, then run it.

I realize the DIE.hold change could affect LICH_ROOM's digest since it touches the ending sequence after GAME.remove_all() runs through the tick cycle — the death and burst timing might shift state in a way that breaks digest parity between the two flows. I need to gate the hold so it only applies when VARIED is set, keeping LICH_ROOM's digest unchanged.

Now I want to verify this works: first, measure the hold time directly by running the ending from LICH_START=ENDING and checking the delay from SEQ.e1 to death equals 2.0s. Second, I need a way to check that resting gore pieces settle naturally — curved pieces should lie with their normal mostly vertical and debris should rest on its thin axis — so I'm planning to expose a debug function on gore that reports settle statistics like curved piece counts and orientation checks after the ending plays out.

Static check passed. I'm gating the 2.0s hold change behind the game-flow switch (keeping 4.0s for the room test, since its digest runs through the ending), then adding a gore count tracking pieces resting on end versus flat to verify the hold duration and check nothing stays upright after the burst.

Good, HX is defined before pool usage. Now I want to probe the ending sequence where snakes appear and cover the scene, checking the dead time hold and the lying state a few seconds after death with bursts landing. I should run this twice—once with settle enabled (default) and once with settle disabled—to compare the before-state visually.

Since SEQ internals aren't exposed directly, I'll detect progress by watching seq().e reach 1 and tracking when dead flips to true through stepping the sequence.

I'll run the ending twice, measuring the gap between the silhouettes' full fade and his death and checking what's still standing 3s after the burst—one run with the settle on, one with it off for comparison.

GAME being nil suggests the boot crashed somewhere during creation, likely inside the gore setup — maybe my geometry changes broke something like a bounding box computation or a missing method on a cached geometry object. I should check the instance log for the actual boot error to confirm where it failed.

I realize the position attribute might actually be a blob rather than an array for geometries loaded from .f32 files, which would explain why indexing fails with a nil error. I need to handle this case by checking if the array is nil and instead reading through the blob/gpu buffer interface.

I realize calling ensure_array would populate the array field, but since `up()` prefers the array over the blob when both exist, that forces a heavier upload path and risks size mismatches between float and byte representations, triggering unnecessary attribute recreation. It's probably cleaner to compute the byte buffer directly instead.

Writing bounding box function...

I'll have gore read the needed extents directly from the raw float32 blob rather than fully unpacking it, since a general unpack would duplicate every vertex into Lua memory and alter the mesh upload path.

The hold time dropped to 2.17s as expected, and the settle comparison is stark: with settle on, nothing stays standing across all pieces, while with settle off, nearly all curved pieces and most debris remain standing — a clear confirmation of the issue.

I want to verify this visually, so I'm planning to capture frames from the egg-focused camera at 0.3, 0.6, 1.0, and 2.0 seconds after death with settle enabled, then assemble them into a contact sheet.

With settling enabled, no curved tube pieces or long/flat debris end up resting on end anymore (down from 9/9 and 365/516), and the hold time is now 2.17s versus the old 4s. I'll capture frames of the pieces landing and tipping to confirm it looks natural.

I notice several tube pieces near the egg in d2-d4 frames still standing upright, which suggests they're still mid-tip rather than fully settled, possibly caught by the existing rotation logic that handles straight pieces.

But that assumes these are gore pieces from burst snakes, and the rotation rate of 5 rad/s means a 90° tip takes about 0.3 seconds -- so if they're still vertical at 1.8 seconds post-death, either the rest condition wasn't triggered yet or something else is keeping them upright that I haven't accounted for.

I'm noticing some tube pieces standing vertically like curved pillars at 1.8 seconds after death, and I'm checking whether their curvature relative to chord length is enough to classify them as arc shapes with a vertical orientation.

Actually, these could be pieces from the burst snakes coiled around the egg, flying outward from the explosion and landing on the ground — but the timing seems off since they should have already landed by 1.8 seconds given a typical flight duration under a second, so I'm trying to figure out why they're still airborne or upright at that point.

Actually the axis was computed in world space at creation when the quaternion was identity, so that should be fine. Rather than keep guessing, I should just add a debug function that dumps piece state directly—rest, lay, axis y, curvature ratio, plane normal y—for each piece 1.8 seconds after death, so I can see exactly what's happening instead of reasoning blind.

Several pieces are still standing upright at 1.8s, so the issue isn't fully fixed — my earlier check only accounted for curved pieces and missed straight ones standing on end. I'll add a per-piece readout at 1.8s tracking rest state, lay state, uprightness, and curvature to pinpoint which rule is failing.

I'm noticing the perfectly vertical chord pieces stay unrotated because the cross product between the vertical vector and UP collapses to zero, which breaks the old rotation logic for that edge case.

The fix is to detect this degenerate case and pick a deterministic fallback axis instead, using a stored random value from the piece's creation (like P.tw) to compute a horizontal fall direction so the result stays consistent rather than relying on live randomness.

I also want to unify the easing behavior so straight pieces fall with the same gravity-like motion as curved ones, rather than snapping to a constant angular speed. I'm working out the lay target computation for straight pieces: converting the chord to world space, checking its vertical component, and falling back to a side direction when the chord points perfectly straight up.

A curved piece lying flat naturally has a horizontal chord, so that case is fine. I still need to patch the fallback logic for degenerate cases where the secondary vector's length is near zero, adding a backup axis so both the old and new paths handle it safely.

Found the bug: pieces with a perfectly vertical chord have a zero cross product in the lay-down rule, so they never fall and stand forever — the egg coil produces exactly these. I'll fix it by giving straight pieces an eased tip-over, with vertical chords falling to a side determined by the piece's existing random value instead of a new draw.

All pieces are now laid flat at chord level. I should also extend the lying() check to count straight standing pieces where the chord's y-component exceeds 0.707, then rerun the frames to visually verify, zooming in on d4.

Pieces are still mid-tip at 0.9s but all settled flat by 1.8s, so I should capture a short clip from the game camera covering the burst from death to 3 seconds — 640x360 at every 2nd tick for about 105 frames — to judge the tip-over motion properly, then encode it. I'll also check whether gore settle is disabled in LICH_ROOM via the digest.

I need to record round 82 and commit the lich-survivors changes, then sync the game and deploy since he's testing on the live site — consistent with his earlier approval to deploy this batch of changes.