Anchor2\app\docs\visual_identity.md
Anchor2\app\design.md
Anchor2\app\plan_focused.md
Anchor2\app\docs\ui_architecture.md
Anchor2\app\plan.md

a327ex-site\logs\2026-01-01-07-37.md
a327ex-site\logs\2026-01-01-19-37.md
a327ex-site\logs\2026-01-02-10-00.md
a327ex-site\logs\2026-01-02-18-59.md
a327ex-site\logs\2026-01-03-12-30.md
a327ex-site\logs\2026-01-03-15-30.md
a327ex-site\logs\2026-01-03-18-20.md
a327ex-site\logs\2026-01-04-12-15.md
a327ex-site\logs\anchor-app-design.md
a327ex-site\logs\anchor-app-phase-1-part-1.md
a327ex-site\logs\anchor-app-ui-discussion.md
a327ex-site\logs\anchor-arena-final-and-neovim-diff-tool.md
a327ex-site\logs\anchor-arena-test.md
a327ex-site\logs\anchor-phase-1.md
a327ex-site\logs\anchor-phase-10-part-1.md
a327ex-site\logs\anchor-phase-10-part-10.md
a327ex-site\logs\anchor-phase-10-part-11.md
a327ex-site\logs\anchor-phase-10-part-2.md
a327ex-site\logs\anchor-phase-10-part-3.md
a327ex-site\logs\anchor-phase-10-part-4.md
a327ex-site\logs\anchor-phase-10-part-5.md
a327ex-site\logs\anchor-phase-10-part-6.md
a327ex-site\logs\anchor-phase-10-part-7.md
a327ex-site\logs\anchor-phase-10-part-8.md
a327ex-site\logs\anchor-phase-10-part-9.md
a327ex-site\logs\anchor-phase-2.md
a327ex-site\logs\anchor-phase-3-part-1.md
a327ex-site\logs\anchor-phase-3-part-2.md
a327ex-site\logs\anchor-phase-3-part-3.md
a327ex-site\logs\anchor-phase-3-part-4.md
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a327ex-site\logs\anchor-app-design.md
a327ex-site\logs\anchor-app-phase-1-part-1.md
a327ex-site\logs\anchor-app-ui-discussion.md
a327ex-site\logs\anchor-app-phase-1-part-2.md
a327ex-site\logs\anchor-app-phase-1-part-3.md
a327ex-site\logs\anchor-app-phase-2-part-1.md

-rw-r--r-- 1 adn 197121 349441 May 10 23:56 E:/a327ex/a327ex-site/logs/anchor-app-phase-1-part-2.md
-rw-r--r-- 1 adn 197121 146680 May 11 12:40 E:/a327ex/a327ex-site/logs/anchor-app-phase-1-part-3.md
-rw-r--r-- 1 adn 197121 241272 May 13 23:54 E:/a327ex/a327ex-site/logs/anchor-app-phase-2-part-1.md

1    Title: Anchor App Phase 2 Part 1
2   Date: 2026-05-13 23:51:11
3   
4   # Anchor App Phase 2 Part 1
5   
6   ## Summary
7   
8   Phase 2 Part 1 of the Anchor App: shipped text editing end-to-end — text-element rendering with styled runs, double-click spawn + editing state, caret + typing + Backspace/Delete/Enter with utf8 + key auto-repeat, selection (drag, shift+click, Ctrl+A), OS-clipboard (Ctrl+C/X/V), coalesced Ctrl+Z/R for text edits, and a new element-vs-pane interaction-mode axis (F10 toggle). Engine got SDL_TEXTINPUT capture and lost its built-in Escape-to-quit.
9   
10  **Session orientation:**
11  - Read prior session log (`a327ex-site/logs/anchor-app-phase-1-part-3.md` head + close).
12  - Read `plan_focused.md`, `docs/ui_architecture.md`, current `canvas.lua`, `main.lua`, `workspace.lua`, `pane.lua` to ground state. Confirmed Phase A (text editing) was the next gating item per the focused plan.
13  - Read `Anchor2/.claude/CLAUDE.md` for v2 disciplines and `Anchor2/app/data/canvases/scratch.lua` to understand persisted shape.
14  
15  **Step 1 — render-only text element (styled runs):**
16  - Settled three upstream decisions via AskUserQuestion: text representation = **styled runs** (list of `{text, style={bold,italic,code}}`), headings ship in Phase A, sequencing = render-only → editing → registry/hot-reload.
17  - Element shape: `{type='text', kind='body'|'h1'|'h2', x, y, w, h, content=[runs]}`. `kind` picks the body font + size; per-run style picks the per-run font variant (regular / italic / medium-as-bold / mono-for-code). Headings ignore inline emphasis for v1.
18  - New font registrations in `main.lua`: `serif_body_italic`, `serif_body_bold` (Medium stands in for bold; no Bold .ttf), `serif_h1` (24pt Medium), `serif_h2` (18pt Medium).
19  - New helpers in `canvas.lua`: `BODY_FONT_FOR_KIND`, `pick_text_font(kind, style)`, `pick_text_color(kind, style)`, `draw_text_element(el)`. Color choices: `text_heading` for h1/h2, `peach` for code (placeholder), `text_primary` for body.
20  - `draw_text_element` tokenizes runs into `word` / `ws` / `break` tokens, lays them into lines with greedy word wrap at `el.w`, takes max font height per line as the line height. Auto-height: `el.h` set to total rendered height each frame.
21  - `save_canvas` + `read_canvas_elements` extended with a `text` branch — serializes/deserializes kind + content runs with style flags.
22  - Sample content added to `data/canvases/scratch.lua` (h1, body with bold/italic/code mix, h2, second body with italic phrase) to the right of the existing image so nothing overlaps.
23  
24  **Element vs pane interaction modes (cross-cutting):**
25  - User raised the design: clicking off an element shouldn't reach into pane state by default. Pane operations should be relegated to a separate mode.
26  - Settled via AskUserQuestion: F10 toggles between `'element'` (default) and `'pane'` modes; status-bar text indicator is enough visual cue.
27  - `workspace_state.interaction_mode` added, persisted to `.workspace_state.lua`. Default 'element'. Existing save files without the field gracefully default.
28  - `update_focus_on_click` and `paint_focus_border` gated on `'pane'` mode. Click-outside-deselect for elements stays unconditional (element-level behavior).
29  - Added `workspace_get_interaction_mode()` accessor; status_bot.lua shows 'ELEMENT' (text_muted) or 'PANE' (lavender) next to the 'UI KIT' label.
30  - Follow-up: Ctrl+drag pane-swap and its hover-affordance ring also gated to pane mode (a drag already in flight finishes ungated, so mid-drag mode toggle doesn't strand it).
... [70 more lines]

100  - Ctrl+V: atomic — `clipboard_get()` may be nil, guarded. finalize pending, snapshot pre, consume_selection if any, `insert_at_caret`, push text-edit cmd.
101 - All four gated on `ctrl_held AND not shift` so Ctrl+Shift+C/V (workspace view-clipboard) doesn't double-fire on top of the text clipboard.
102 
103 **Coalesced text-edit undo (originally planned as Step 5; folded in on user request):**
104 - User explicitly asked for Ctrl+Z/R to work for text edits and for Backspace repeat rate to be faster.
105 - Lowered `KEY_REPEAT_RATE` 0.035 → 0.020 (50 Hz).
106 - New helpers: `clone_content`, `content_equal` (compares text + bold/italic/code flags), `set_content` (in-place run swap; preserves table identity), `make_text_edit_command` (pre/post content + pre/post caret; restores caret only when pane is currently editing the element).
107 - `TEXT_EDIT_IDLE=1.0` second threshold for coalescing.
108 - New state on canvas init: `pending_edit = nil | {el, pre, pre_caret, kind, last_t}`.
109 - `start_or_extend_pending_edit(self, el, kind)`: if same el+kind within idle threshold, extend (just bump last_t); else finalize previous and start new with current content snapshot.
110 - `finalize_pending_edit(self)`: captures current el.content as post, pushes `make_text_edit_command` if pre != post. Idempotent on no-change.
111 - Kinds: `'typing'` (text input + Enter), `'backspace'`, `'delete'` coalesce within kind. `'cut'`/`'paste'` are atomic (push cmd directly each press).
112 - Finalize triggers: idle timeout (per-frame check at top of update), any click in canvas, Ctrl+A, exit_editing. Also from workspace via the `flush_undo` hook before Ctrl+Z/R.
113 - `pane:flush_undo()` dispatch added to pane class; workspace's `handle_undo_keys` calls `flush_pane_undo_state()` iterating all panes before `undo()`/`redo()` so in-flight coalesce sessions promote to the stack first.
114 - `flush_undo` callback added to canvas pane def, just calls `finalize_pending_edit(self)`.
115 - exit_editing reorganized: strip trailing newlines first, then `finalize_pending_edit` (so strip is rolled into the same undo entry as the originating edit), then clear editing_el + key_repeat, then check empty/stripped → auto-remove or save.
116 - Version polling clears `pending_edit` when the editing element disappears (prevents stale-el undo entries after undo-of-spawn).
117 
118 **Bug fix — `attempt to call a nil value (global 'save_canvas')`:**
119 - User reported: Ctrl+Z fired the error at `panes/canvas.lua:546: in method 'revert'`.
120 - Root cause: `make_text_edit_command`'s `apply`/`revert` closures reference `save_canvas` by name. Lua resolves the name at closure-compile time; `make_text_edit_command` is defined at line 510, `local function save_canvas` is at line 775. At compile time of the closure, `save_canvas` wasn't a local in scope, so it resolved to `_ENV.save_canvas` (global) which is nil.
121 - Fix: forward-declare `local save_canvas` at the top of the file (above `clone_content`). Change the later definition from `local function save_canvas(model)` to `function save_canvas(model)` (no `local` keyword) so it assigns to the existing local rather than declaring a new one. Closures now see the populated value at runtime. Same pattern would work for any similar grouping conflict.
122 
123 **Files modified this session:**
124 - `Anchor2/engine/src/anchor.c` — SDL_TEXTINPUT capture, `engine_get_typed_text` binding, `SDL_StartTextInput()` at init, removed Escape-to-quit from both event loops
125 - `Anchor2/app/main.lua` — added 4 font registrations (serif_body_italic/bold, serif_h1/h2); temporary smoke-test print added then removed
126 - `Anchor2/app/panes/canvas.lua` — text element + editing helpers + layout/render split + draw_text_element + selection rects + caret + click branches + typing/Backspace/Delete/Enter + Ctrl+A/C/X/V + text-edit undo helpers + flush_undo callback + force-break wrap + trailing-newline strip + auto-remove on empty exit (large file; biggest delta of the session)
127 - `Anchor2/app/panes/status_bot.lua` — ELEMENT/PANE interaction-mode label after the UI KIT label
128 - `Anchor2/app/workspace.lua` — `workspace_state.interaction_mode`, `workspace_get_interaction_mode()`, F10 toggle handler, persistence round-trip, gated `update_focus_on_click` + `paint_focus_border` + Ctrl+drag init + drag-affordance ring, `flush_pane_undo_state` before undo/redo
129 - `Anchor2/app/pane.lua` — `pane:flush_undo()` dispatch
... [170 more lines]

1    # Anchor App — Focused Plan: Writing + Website
2   
3   *Active plan as of 2026-05-13. The full 10-phase vision in [`plan.md`](plan.md) is on hold; this file scopes current development to two priority features.*
4   
5   ---
6   
7   ## Why this exists
8   
9   The long-term plan in `plan.md` is the omega-app vision: a single environment for writing, code, music, games, knowledge, agents. That's still the destination, but right now there are two things that actually need to ship before anything else:
10  
11  1. **Writing.** A story I want to write. Mostly plain prose, the occasional image.
12  2. **Website.** a327ex.com is currently a self-hosted Lua + markdown pipeline (see `a327ex-site/README.md`). The endgame is for the entire site to be Anchor App views rendered by the engine compiled to WASM — no markdown export step, no source-vs-rendered split. The canvas I wrote in the app IS what gets served to visitors.
13  
14  Everything else (filesystem/tagging, code editor, music views, game-dev views, knowledge graph, background processing, the full multi-agent roster) is parked. Resume from `plan.md` once these two land.
15  
16  ---
17  
18  ## If you're a future session picking this up
19  
20  Read, in this order:
21  
22  1. **This file** — for the focused scope and phase plan.
23  2. **`plan.md`** — for the long-term vision, architecture decisions, and `## Current Status` ledger of what's already shipped. Most of the architecture sections still apply unchanged.
24  3. **`docs/ui_architecture.md`** — UI system architecture (workspace/panes/slots, model–view, hosts, RectCut). Load-bearing and non-obvious from the codebase.
25  4. **`docs/visual_identity.md`** — palette, typography, density, chrome.
26  5. **`docs/mockup_v2_ui_kit.html`** + **`docs/mockup_v2_write.html`** — authoritative visual reference for primitives and writing mode.
27  6. **`Anchor2/.claude/CLAUDE.md`** — framework-v2 coding disciplines.
28  
29  ---
30  
... [204 more lines]

1    ---
2   name: Anchor app (omega app)
3   description: Canvas-based workspace app in Anchor2/app/ — text editing + selection + clipboard + coalesced undo shipped 2026-05-13 (Phase 2 Part 1). Authoritative spec + mockups in Anchor2/app/docs/.
4   type: project
5   originSessionId: 776d994d-07fd-4a03-a799-680a4b64e07c
6   ---
7   The user is building an "omega app" in `Anchor2/app/` — a canvas-based unified workspace (planned to replace Notepad, Explorer, editors, DAW, browser). Documents are spatial canvases of positioned elements (text, image, code, game view); no Markdown; native structured format. Triple use: dev environment, a327ex.com website via WASM, artistic artifacts — all rendered by Anchor.
8   
9   **Why:** Four months of Claude Code use eroded code ownership; the realization was that what needs owning is the *environment*, not the code. Claude-written code is replaceable; the place you work inside of isn't.
10  
11  **Authoritative references (read in this order when picking up the project):**
12  1. `Anchor2/app/plan_focused.md` — active plan (writing + website scope). Has the status table showing what shipped through 2026-05-13.
13  2. `Anchor2/app/plan.md` — ON-HOLD long-term 10-phase vision. Architecture sections still apply.
14  3. `Anchor2/app/docs/ui_architecture.md` — UI system architecture (workspace/panes/slots/embeds/canvas/text/undo). Load-bearing TL;DR.
15  4. `Anchor2/app/docs/visual_identity.md` — palette, typography, density, chrome rules. §8 = locked decisions, §9 = mockup index.
16  5. `Anchor2/app/docs/mockup*.html` — six self-contained HTML mockups. Implement to match.
17  6. `Anchor2/.claude/CLAUDE.md` — framework-v2 coding disciplines.
18  
19  **What's shipped (2026-05-13):**
20  - Phase 1 Parts 1–3: workspace + canvas pane + model layer + embedded views + view clipboard + visible focus.
21  - Phase 2 Part 1 (= focused-plan Phase A, mostly): text element with styled runs + word wrap + force-break, double-click to spawn/edit, caret with blink, click-to-position, typing/Backspace/Delete/Enter with codepoint-aware utf8 + key auto-repeat, drag-select + shift+click + Ctrl+A, replace-on-type, Ctrl+C/X/V clipboard, coalesced Ctrl+Z/R for text edits (kind-grouped sessions, 1 s idle finalize, atomic cut/paste). Empty text elements auto-remove on exit; trailing newlines stripped.
22  - Phase 2 Part 1 cross-cutting: element vs pane interaction modes (F10 toggle), Ctrl+drag gated to pane mode, status-bar mode label, engine SDL_TEXTINPUT + `engine_get_typed_text()`, engine default `SDL_StartTextInput()`, engine Escape-to-quit removed.
23  
24  **Still outstanding for Phase A closeout:**
25  - Step 2e — arrow keys / Home / End / Ctrl+arrow (keyboard navigation).
26  - Step 4 — Ctrl+B / Ctrl+I / Ctrl+E formatting hotkeys (needs run-splitting at selection boundaries).
27  - Action registry + keybinding map.
28  - Hot reload.
29  
30  **Locked facts (settled; do not re-litigate without user prompting):**
... [19 more lines]

1    # Anchor App UI Discussion
2   
3   Captured 2026-04-28. Updated 2026-05-13 (Phase 2 Part 1 — text element +
4   editing + selection + clipboard + coalesced undo shipped, plus
5   element/pane interaction modes and `SDL_TEXTINPUT` engine support).
6   Authoritative reference for the app's UI architecture. If you are a
7   future session picking this up, read this file *after* `plan.md` /
8   `plan_focused.md` and *before* writing any UI code — most of the
9   decisions here are non-obvious from the codebase alone and were settled
10  by long discussion.
11  
12  The visual side of the UI is covered separately: see `docs/visual_identity.md`
13  and `docs/mockup_v2_ui_kit.html` (the authoritative visual reference). This
14  file is the *system architecture*: how the UI is structured in code, what the
15  units of composition are, how state flows between them.
16  
17  ---
18  
19  ## TL;DR
20  
21  - **Hybrid mode UI**: retained workspace shell (panes are long-lived stateful objects you can drag between slots) + immediate-mode widget functions inside panes (buttons, chips, rows — drawn each frame from state).
22  - **Two-tier layout**: a workspace template defines named **slots** (edge slots + one fill slot); each mode assigns specific **panes** to those slots. Slot names are positional and generic (`side_a`, `main`, `status_top`); pane names are stable identities (`code_editor`, `agent_oracle`).
23  - **RectCut** is the layout primitive inside panes. Small module (~50 lines), mutating-parent style, supplemented by helpers (contract, center, split_h/v).
24  - **Model–view separation** (✅ shipped Phase 1 Part 2 step 7): a separate `models` registry holds canvases, files, conversations etc. Each model has `{id, kind, version, content}`. Panes are *views* of models — they hold `self.model_id` and dereference via `model_get(id)`. Multiple panes can view the same model; edits propagate via per-frame version polling (`self.last_seen_version != self.model.version → re-validate view-local state`).
25  - **Two host types** for panes (✅ shipped Phase 1 Part 3 step 8): workspace **slot** host or canvas-**element** host (`embedded_view` element type). Same pane class either way — what differs is who calls `pane:update(dt, input, rect)` with what rect. Elements persist their `pane_id`, `pane_type`, `model_id` + bounds; the inner pane is created idempotently on load via `pane({id=..., type=..., model_id=...})`.
26  - **Pane content uses canvas-local coordinates** (✅ shipped Phase 1 Part 2 step 7b): element `(x, y)` is offset from the canvas origin (its pane's rect top-left), not from the window origin. Rendering translates by `(rect.x, rect.y)` via `layer_push`; input is translated the other way (`cx = mx - rect.x`). Two panes viewing the same canvas render identical content at identical canvas-local positions — the property that makes embedded views work.
27  - **Workspace owns input routing** (✅ recursive routing shipped Phase 1 Part 3). Drops drain once at the workspace; clicks, drops, focus-on-click, and cursor authority all resolve to the **deepest pane under the cursor** via `pane:find_pointer_target(cx, cy, rect)`, which walks into embedded views by default. The canvas type's callback applies override rules in priority order: (a) Alt held → outer wins (the "address the host" modifier); (b) outer has a selected element with cursor inside its bounds → outer wins (modal selection — clicks on an already-grabbed embed stay with the host); (c) cursor over an embedded view → recurse into it; (d) otherwise the host wins. Panes gate pointer-driven input on `pane_owns_pointer(self)`; drag continuations are NOT gated so a move/resize that started in one pane can wander out without being interrupted.
28  - **Indirect-cycle guard** (✅ Phase 1 Part 3): the canvas type maintains a module-local `rendering_panes` set so a pane that re-enters its own update during a frame's render walk (A embeds B embeds A, easy to construct via copy/paste) short-circuits with a red placeholder instead of stack-overflowing. Direct self-embedding is caught at the element level by `el.model_id ~= self.model_id`.
29  - **Selection by element reference, not index**. When another pane deletes an earlier element, indices shift; refs don't.
30  - **Click-outside-deselect** (✅ Phase 1 Part 3): a click anywhere a pane doesn't own clears that pane's `selected_el`. Combined with the existing same-pane empty-click branch, this gives the uniform rule "clicking outside the selected thing deselects it" regardless of pane boundaries.
... [90 more lines]

User has answered your questions: "Which Phase A close-out item should we tackle this session?"="[User dismissed — do not proceed, wait for next instruction]". You can now continue with the user's answers in mind.

2198 E:/a327ex/Anchor2/app/panes/canvas.lua

1    --[[
2     canvas — free-flowing element canvas pane.
3   
4     Drops: image files dropped on the canvas are saved to the content
5     store and added as elements at the cursor position, native pixel
6     size. Oversize images overflow the slot intentionally; the stencil
7     clip below hides anything outside the canvas rect, so overflow
8     doesn't bleed into neighboring panes.
9   
10    Element shapes (in self.elements):
11      {type='image',         blob_id='blob:<hex>.<ext>', image=<image>, x=, y=, w=, h=}
12      {type='embedded_view', pane_id=<string>, pane_type=<string>,
13                             model_id=<string>, pane=<pane instance>, x=, y=, w=, h=}
14      {type='text',          kind='body'|'h1'|'h2', x=, y=, w=, h=,
15                             content={{text='...', style={bold=,italic=,code=}}, ...}}
16  
17    Image elements: blob_id is the persisted reference. `image` is the
18    live texture handle, re-resolved from blob_id on load. x/y are top-
19    left in canvas-local coordinates. w/h are the rendered size, starting
20    at native image dims and changing as the user resizes.
21  
22    Text elements (Phase A step 1, render-only): a positioned paragraph of
23    prose, word-wrapped to el.w. `kind` picks the body font + size
24    (body/h1/h2). `content` is a list of styled runs — each run is one
25    string + a style flag set (bold, italic, code). The render branch
26    flattens runs into words+spaces, wraps them within el.w, and draws
27    per-token with the run's chosen font + color. `el.h` is auto-set to
28    the rendered height after each draw — text elements are
29    width-resizable; height follows content. Editing (caret, insertion,
30    arrow keys, formatting hotkeys, undo) lands in subsequent Phase A
... [90 more lines]

120    return theme.text_primary
121 end
122 
123 -- Layout one text element. Returns a layout struct:
124 --   { body_font   = <font>,
125 --     lines       = { {items=<token list>, height=N, y=N}, ... },
126 --     chars       = { {x, y, line, line_h, run_idx, offset, advance}, ... },
127 --     end_pos     = {x, y, line_h},
128 --     total_h     = N }
129 --
130 -- The `chars` list has one entry per source byte of el.content, in linear
131 -- order across runs. Each entry carries the byte's run+offset (caret
132 -- handle) plus its drawn position. Spaces / newlines have entries too —
133 -- caret can live next to whitespace.
134 --
135 -- Layout: each run is tokenized into alternating word + whitespace tokens
136 -- (newlines become explicit break tokens, one per char so each has a
137 -- caret slot). Tokens are laid into lines left-to-right; when a word
138 -- would overflow el.w it starts a new line. Leading whitespace at the
139 -- start of a wrapped line is dropped from the rendered token stream but
140 -- still gets a (zero-advance) entry in `chars` so the caret can park
141 -- there. Line height = max font height of tokens on the line.
142 local function layout_text_element(el)
143   local body_font = fonts[BODY_FONT_FOR_KIND[el.kind] or 'serif_body']
144   if not body_font then return nil end
145 
146   -- Tokenize all runs. Each token tracks its run + byte offset so the
147   -- char positions can be back-linked to caret coordinates.
148   local tokens = {}
149   for run_idx, run in ipairs(el.content or {}) do
... [250 more lines]

399  
400 local function content_total_bytes(content)
401   local n = 0
402   for _, run in ipairs(content) do n = n + #(run.text or '') end
403   return n
404 end
405 
406 -- Convert a caret_index into (run_idx, byte_offset_within_run). The
407 -- run returned is the one whose range [start, start + len) contains
408 -- caret_index; for a caret at an EXACT run boundary, returns the
409 -- earlier run (with offset == #run.text), matching the "caret sits at
410 -- end of left run" convention.
411 local function caret_to_run_offset(content, caret_index)
412   local total = 0
413   for i, run in ipairs(content) do
414     local len = #(run.text or '')
415     if caret_index <= total + len then
416       return i, caret_index - total
417     end
418     total = total + len
419   end
420   -- Past end — clamp to end of last run.
421   local last = #content
422   return last, #(content[last].text or '')
423 end
424 
425 local function insert_at_caret(content, caret_index, text_to_insert)
426   if text_to_insert == '' then return caret_index end
427   local run_idx, offset = caret_to_run_offset(content, caret_index)
428   local run = content[run_idx]
... [270 more lines]

699    -- below all lines, use the last line.
700   local target_line = #lo.lines
701   for i, line in ipairs(lo.lines) do
702     if cy < line.y + line.height then target_line = i; break end
703   end
704 
705   -- Walk chars on the target line; for each, the caret can sit at its
706   -- left edge (x == ch.x) or right edge (x == ch.x + ch.advance). Take
707   -- the smallest distance.
708   local best_dist = math.huge
709   local best_run, best_offset
710   for _, ch in ipairs(lo.chars) do
711     if ch.line == target_line then
712       local d_left = math.abs(cx - ch.x)
713       if d_left < best_dist then
714         best_dist = d_left; best_run = ch.run_idx; best_offset = ch.offset
715       end
716       local d_right = math.abs(cx - (ch.x + ch.advance))
717       if d_right < best_dist then
718         best_dist = d_right; best_run = ch.run_idx; best_offset = ch.offset + 1
719       end
720     end
721   end
722   if best_run then return best_run, best_offset end
723   -- Line had no chars (shouldn't happen if #chars > 0, but defensive).
724   return 1, 0
725 end
726 
727 -- Inverse of caret_to_run_offset: linear byte index for a run+offset pair.
728 local function run_offset_to_caret(content, run_idx, offset)
... [270 more lines]

999        local p = panes[c.pane_id]; if not p then return end
1000          table.insert(p.model.content.elements, c.index, c.el)
1001          p.selected_el = c.el  -- restore selection to the un-deleted element
1002          model_bump(p.model)
1003          save_canvas(p.model)
1004        end,
1005      }
1006    end
1007    
1008    local function make_move_command(pane_id, el, pre_x, pre_y, post_x, post_y)
1009      return {
1010        pane_id = pane_id, el = el,
1011        pre_x = pre_x, pre_y = pre_y, post_x = post_x, post_y = post_y,
1012        apply = function(c)
1013          c.el.x, c.el.y = c.post_x, c.post_y
1014          local p = panes[c.pane_id]
1015          if p then model_bump(p.model); save_canvas(p.model) end
1016        end,
1017        revert = function(c)
1018          c.el.x, c.el.y = c.pre_x, c.pre_y
1019          local p = panes[c.pane_id]
1020          if p then model_bump(p.model); save_canvas(p.model) end
1021        end,
1022      }
1023    end
1024    
1025    local function make_resize_command(pane_id, el, pre, post)
1026      return {
1027        pane_id = pane_id, el = el, pre = pre, post = post,
1028        apply = function(c)
... [320 more lines]

1348     -- Optional bg color override (color object). Useful when two canvas
1349        -- panes view the same model in adjacent slots — different bg colors
1350        -- make the slot boundary visible. Defaults to theme.bg_base.
1351        self.bg = (opts and opts.bg) or theme.bg_base
1352    
1353        -- `self.elements` is a direct alias for `self.model.content.elements`
1354        -- — convenient shorthand for the pane's own update code. Since we
1355        -- only mutate the elements list in place (insert/remove), the alias
1356        -- stays valid for the lifetime of the model.
1357        self.elements = self.model.content.elements
1358    
1359        -- Selection is stored as an element REFERENCE (not an index)
1360        -- because indices shift when another pane deletes an earlier
1361        -- element. A ref stays correct regardless of reordering.
1362        self.selected_el = nil
1363    
1364        -- Editing state for text elements (Phase A step 2b). When set,
1365        -- the element is being edited: caret will live inside it, typing
1366        -- mutates its content, and resize handles + drag-to-move are
1367        -- suppressed. Entered via double-click (existing text element OR
1368        -- empty area spawns a new element); exited via Escape, click on
1369        -- a different element, or click outside the pane.
1370        self.editing_el = nil
1371    
1372        -- Caret state — meaningful only when editing_el is set. Caret is a
1373        -- single byte offset into the conceptual concatenation of all the
1374        -- editing element's runs (0 = before first byte; total = after last).
1375        -- caret_anchor is the other end of the selection range; when it
1376        -- equals caret_index there's no selection (just a caret), otherwise
1377        -- [min, max) is the selected byte span. caret_blink_t is the
... [320 more lines]

1698         self.caret_anchor  = self.caret_index
1699            self.caret_blink_t = time
1700            mutated = true
1701          end
1702    
1703          -- Backspace / Delete / Enter are NOT gated on `owns`: once a pane
1704          -- has an editing_el, control keys for that editing session should
1705          -- fire regardless of where the cursor wandered. (Compare with the
1706          -- element-Delete handler above, which IS pointer-gated because it
1707          -- operates on the cursor's pane, not the editing pane.) All three
1708          -- use the auto-repeat helper so holding the key produces a stream
1709          -- of operations at the same cadence as a native text input.
1710          if key_pressed_or_repeated(self.key_repeat_next, 'backspace') then
1711            start_or_extend_pending_edit(self, el, 'backspace')
1712            if consume_selection() then
1713              self.caret_blink_t = time
1714              mutated = true
1715            else
1716              local before = self.caret_index
1717              self.caret_index = backspace_at_caret(el.content, self.caret_index)
1718              self.caret_anchor = self.caret_index
1719              if self.caret_index ~= before then
1720                self.caret_blink_t = time
1721                mutated = true
1722              end
1723            end
1724          end
1725    
1726          if key_pressed_or_repeated(self.key_repeat_next, 'delete') then
1727            start_or_extend_pending_edit(self, el, 'delete')
... [270 more lines]

[
  {
    "type": "tool_reference",
    "tool_name": "TodoWrite"
  }
]

1995     -- push a transform that translates to the element center and scales by
1996        -- (target_w/native_w, target_h/native_h) — the centered draw at (0, 0)
1997        -- lands exactly with top-left at (el.x, el.y) at the desired w/h.
1998        --
1999        -- Important: don't call `layer_draw_texture` directly — that's the raw
2000        -- engine binding that expects a Layer* lightuserdata as arg 1. Use
2001        -- `layer_image` (or `layer_texture`), which is the framework wrapper
2002        -- that accepts the layer state table from layer_new.
2003        for _, el in ipairs(self.elements) do
2004          if el.type == 'image' then
2005            local sx = el.w / el.image.width
2006            local sy = el.h / el.image.height
2007            layer_push(ui_layer, el.x + el.w*0.5, el.y + el.h*0.5, 0, sx, sy)
2008            layer_image(ui_layer, el.image, 0, 0)
2009            layer_pop(ui_layer)
2010          elseif el.type == 'text' then
2011            -- Only paint a selection highlight on the element being edited
2012            -- by THIS pane. Other views of the same model show the text
2013            -- without view-local caret/selection state.
2014            local sel
2015            if el == self.editing_el and self.caret_anchor ~= self.caret_index then
2016              sel = {
2017                lo = math.min(self.caret_anchor, self.caret_index),
2018                hi = math.max(self.caret_anchor, self.caret_index),
2019              }
2020            end
2021            draw_text_element(el, sel)
2022          elseif el.type == 'embedded_view' then
2023            -- Run the inner pane's full update inside the element's bounds.
2024            -- The inner does its own bg fill, stencil mask + test, layer_push
... [173 more lines]

E:\a327ex\Anchor2\app\panes\canvas.lua:1513:    if owns and key_is_pressed('escape') and self.editing_el then
E:\a327ex\Anchor2\app\panes\canvas.lua:1522:    if owns and self.selected_el and not self.editing_el and key_is_pressed('delete') then
E:\a327ex\Anchor2\app\panes\canvas.lua:1538:    if owns and key_is_pressed('e') and not ctrl_held and not self.editing_el then
E:\a327ex\Anchor2\app\panes\canvas.lua:1766:      if ctrl_held and not shift and key_is_pressed('a') then
E:\a327ex\Anchor2\app\panes\canvas.lua:1776:      if ctrl_held and not shift and key_is_pressed('c') then
E:\a327ex\Anchor2\app\panes\canvas.lua:1787:      if ctrl_held and not shift and key_is_pressed('x') then
E:\a327ex\Anchor2\app\panes\canvas.lua:1803:      if ctrl_held and not shift and key_is_pressed('v') then
E:\a327ex\Anchor2\app\workspace.lua:333:  if key_is_pressed('z') then
E:\a327ex\Anchor2\app\workspace.lua:336:  elseif key_is_pressed('r') then
E:\a327ex\Anchor2\app\workspace.lua:357:  if key_is_pressed('c') then
E:\a327ex\Anchor2\app\workspace.lua:386:  elseif key_is_pressed('v') then
E:\a327ex\Anchor2\app\docs\ui_architecture.md:48:- **Engine: no built-in Escape-to-quit** (Phase 2 Part 1): the engine's default-quit-on-Escape paths in both the main event loop and the error-state fallback loop were removed. Escape is now an editor key (exit text editing). The window-close button still ends the loop via `SDL_QUIT`. Games that want Escape-to-quit can wire it explicitly via `key_is_pressed('escape')` + `engine_quit()`.

2654:    if (strcmp(name, "left") == 0) return SDL_SCANCODE_LEFT;
2655:    if (strcmp(name, "right") == 0) return SDL_SCANCODE_RIGHT;
2656:    if (strcmp(name, "up") == 0) return SDL_SCANCODE_UP;
2657:    if (strcmp(name, "down") == 0) return SDL_SCANCODE_DOWN;
2687:    if (strcmp(name, "home") == 0) return SDL_SCANCODE_HOME;
2688:    if (strcmp(name, "end") == 0) return SDL_SCANCODE_END;
2750:        case SDL_SCANCODE_LEFT: return "left";
2751:        case SDL_SCANCODE_RIGHT: return "right";
2752:        case SDL_SCANCODE_UP: return "up";
2753:        case SDL_SCANCODE_DOWN: return "down";
2774:        case SDL_SCANCODE_HOME: return "home";
2775:        case SDL_SCANCODE_END: return "end";
3636:        "left", "right", "up", "down",
3639:        "insert", "delete", "home", "end", "pageup", "pagedown",

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The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

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1705       -- a new operation.
1706          finalize_pending_edit(self)
1707          local hit_el = hit_test(self.elements, cx, cy)
1708          local is_double = (time - self.last_click_time < DOUBLE_CLICK_S)
1709                        and (math.abs(cx - self.last_click_x) < DOUBLE_CLICK_DIST)
1710                        and (math.abs(cy - self.last_click_y) < DOUBLE_CLICK_DIST)
1711          self.last_click_time = time
1712          self.last_click_x    = cx
1713          self.last_click_y    = cy
1714    
1715          if is_double and not hit_el then
1716            -- D1. Spawn a new body text element at cursor + enter editing.
1717            local new_el = spawn_text_element_at(self, cx, cy)
1718            self.selected_el  = new_el
1719            self.editing_el   = new_el
1720            self.caret_index  = 0
1721            self.caret_anchor = 0
1722            self.caret_blink_t = time
1723          elseif is_double and hit_el and hit_el.type == 'text' then
1724            -- D2. Enter editing for the existing text element. Caret lands
1725            -- where the click was, using the layout cached from the prior
1726            -- frame (the element has been rendered before since it was
1727            -- already in the canvas).
1728            self.selected_el = hit_el
1729            self.editing_el  = hit_el
1730            local lo = hit_el._layout
1731            if lo then
1732              local run_idx, offset = hit_test_caret(lo, cx - hit_el.x, cy - hit_el.y)
1733              self.caret_index = run_offset_to_caret(hit_el.content, run_idx, offset)
1734            else
... [45 more lines]

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OK   size=function: 0000000000fbd820

1932       if ctrl_held and not shift and key_is_pressed('c') then
1933            if self.caret_anchor ~= self.caret_index then
1934              local lo = math.min(self.caret_anchor, self.caret_index)
1935              local hi = math.max(self.caret_anchor, self.caret_index)
1936              clipboard_set(content_substring(el.content, lo, hi))
1937            end
1938          end
1939    
1940          -- Cut + Paste are atomic in undo: each press is its own undo
1941          -- entry regardless of timing. Push directly via a one-shot
1942          -- text-edit cmd rather than extending the coalesced session.
1943          if ctrl_held and not shift and key_is_pressed('x') then
1944            if self.caret_anchor ~= self.caret_index then
1945              finalize_pending_edit(self)
1946              local pre       = clone_content(el.content)
1947              local pre_caret = self.caret_index
1948              local lo = math.min(self.caret_anchor, self.caret_index)
1949              local hi = math.max(self.caret_anchor, self.caret_index)
1950              clipboard_set(content_substring(el.content, lo, hi))
1951              consume_selection()
1952              self.caret_blink_t = time
1953              mutated = true
1954              undo_push(make_text_edit_command(self.id, el, pre,
1955                clone_content(el.content), pre_caret, self.caret_index))
1956            end
1957          end
1958    
1959          if ctrl_held and not shift and key_is_pressed('v') then
1960            local clip = clipboard_get()
1961            if clip and clip ~= '' then
... [80 more lines]

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KeyboardDelay raw = 1
KeyboardSpeed raw = 31
Delay ms      = 500
Repeat cps    = 30
Repeat ms     = 33.33

User has answered your questions: "Your Windows registry has the default 500ms delay / ~33ms repeat. The 200ms you mentioned is faster. Which do you want?"="My registry values are 200ms, 10ms actually, use those directly.", "Where should the programmatic detection live?"="No need to do this.". You can now continue with the user's answers in mind.

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

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461  local save_canvas
462 
463 -- Deep-copy a content snapshot for text-edit undo storage. Each run
464 -- gets a fresh `text` (immutable string, so the existing reference is
465 -- safe) and a fresh `style` table (copied flag-by-flag — we only have
466 -- bold/italic/code today; new flags need to be listed here too).
467 local function clone_content(content)
468   local out = {}
469   for _, run in ipairs(content) do
470     local style = {}
471     for k, v in pairs(run.style or {}) do style[k] = v end
472     table.insert(out, {text = run.text or '', style = style})
473   end
474   return out
475 end
476 
477 -- Compare two content snapshots. Treats two contents as equal if every
478 -- run matches in text + the same set of style flags. Used to skip
479 -- pushing an undo entry when a coalesced edit session's net change is
480 -- zero (e.g. user typed 'h' then immediately Backspaced it).
481 local function content_equal(a, b)
482   if #a ~= #b then return false end
483   for i, ra in ipairs(a) do
484     local rb = b[i]
485     if ra.text ~= rb.text then return false end
486     local sa, sb = ra.style or {}, rb.style or {}
487     if sa.bold ~= sb.bold or sa.italic ~= sb.italic or sa.code ~= sb.code then
488       return false
489     end
490   end
... [20 more lines]

681  local function strip_trailing_newlines(content)
682   while true do
683     local i = #content
684     while i > 0 and (content[i].text or '') == '' do i = i - 1 end
685     if i == 0 then return end
686     local t = content[i].text or ''
687     if t:sub(-1) ~= '\n' then return end
688     content[i].text = t:sub(1, -2)
689   end
690 end
691 
692 -- Find the (run_idx, offset) for the caret position closest to a click
693 -- at (cx, cy) in element-local coords. If the element has no chars yet,
694 -- returns the start of the first run.
695 local function hit_test_caret(lo, cx, cy)
696   if #lo.chars == 0 then return 1, 0 end
697 
698   -- Find target line: first line whose bottom edge is below cy. If cy is
699   -- below all lines, use the last line.
700   local target_line = #lo.lines
701   for i, line in ipairs(lo.lines) do
702     if cy < line.y + line.height then target_line = i; break end
703   end
704 
705   -- Walk chars on the target line; for each, the caret can sit at its

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The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

2642:        if (c >= '1' && c <= '9') return SDL_SCANCODE_1 + (c - '1');
2736:    if (sc >= SDL_SCANCODE_1 && sc <= SDL_SCANCODE_9) {
2738:        digit[0] = '1' + (sc - SDL_SCANCODE_1);
10539:    SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");

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555        save_canvas(p.model)
556     end,
557   }
558 end
559 
560 -- Finalize the pane's pending text edit (if any) by capturing the
561 -- current el.content as the `post` state and pushing an undo command.
562 -- Called on idle timeout, click, Ctrl+A, edit exit, and kind transitions.
563 -- Skips the push when content didn't actually change (cancelled session).
564 local function finalize_pending_edit(self)
565   local p = self.pending_edit
566   if not p then return end
567   self.pending_edit = nil
568   local post = clone_content(p.el.content)
569   if content_equal(p.pre, post) then return end

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95   **Status by deliverable:**
96  
97  | Item | Status | Notes |
98  |---|---|---|
99  | Text element type (styled runs) | ✅ | `{type='text', kind='body'\|'h1'\|'h2', x, y, w, h, content={{text, style={bold,italic,code}}, ...}}`. Auto-height; width-resizable. |
100 | Layout (word wrap + multi font + inline formatting) | ✅ | Wraps at element width; force-breaks over-wide single words. Per-run font selection (regular/italic/medium-as-bold/mono). Line height = max font height across the line. |
101 | Caret + insertion | ✅ | Blink with solid hold after movement. Caret = byte index into concatenated runs. |
102 | Arrow keys, Ctrl+arrow, Home/End | ⏳ | Phase A step 2e — deferred per session sequencing decision. |
103 | Clipboard (Ctrl+C/X/V) | ✅ | Plain-text only via `clipboard_get`/`set`. Multi-line paste preserves `\n`. |
104 | Select-all (Ctrl+A) | ✅ | |
105 | Mouse drag-select + Shift+click + replace-on-type | ✅ | `caret_anchor` alongside `caret_index`. Selection rectangles per line, drawn behind text. |
106 | Formatting hotkeys (Ctrl+B / Ctrl+I / Ctrl+E) | ⏳ | Step 4 — not yet shipped. Needs run-splitting at selection boundaries. |
107 | Text-edit undo (coalesced) | ✅ | Per-keystroke save + per-session undo via `pending_edit` coalescing. Same kind extends within 1 s; idle / click / Ctrl+A finalize. Cut / paste atomic. Workspace `flush_undo` hook integrates with global Ctrl+Z. |
108 | Action registry + keybinding map | ⏳ | Deferred. Hardcoded chords today; design call comes when Phase B's command palette lands. |
109 | Command palette | ⏳ | Phase B. Depends on action registry. |
110 | Hot reload | ⏳ | Not yet. |
111 
112 **Milestone progress**: ✓ open the app, ✓ double-click empty canvas to spawn a text element, ✓ type prose, ✗ bold/italic (rendering works for hand-edited content; no hotkey to apply yet), ✓ select with mouse / Ctrl+A, ✓ copy/paste, ✓ undo (coalesced), ✓ save (auto-persist), ✓ close, ✓ reopen — text preserved.
113 
114 **Open questions — resolved:**
115 
116 - ✅ **Headings in Phase A.** Shipped as `kind='h1'|'h2'`.
117 - ✅ **Styled runs**, not inline markers. Each element's `content` is a list of `{text, style}` runs.
118 - ✅ **Selection stops at element edges.** Cross-element selection deferred to Phase D if ever needed.
119 - ✅ **Caret-at-click-position** on entry into editing.
120 
121 **Still outstanding for Phase A close-out:**
122 
123 - Keyboard navigation (arrows / Home / End / Ctrl+arrow) — Step 2e.
124 - Formatting hotkeys (Ctrl+B / Ctrl+I / Ctrl+E) on selection — Step 4. Needs run-splitting at selection boundaries.

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1    # Anchor App UI Discussion
2   
3   Captured 2026-04-28. Updated 2026-05-13 (Phase 2 Part 1 — text element +
4   editing + selection + clipboard + coalesced undo shipped, plus
5   element/pane interaction modes and `SDL_TEXTINPUT` engine support).
6   Authoritative reference for the app's UI architecture. If you are a
7   future session picking this up, read this file *after* `plan.md` /
8   `plan_focused.md` and *before* writing any UI code — most of the
9   decisions here are non-obvious from the codebase alone and were settled
10  by long discussion.
11  
12  The visual side of the UI is covered separately: see `docs/visual_identity.md`
13  and `docs/mockup_v2_ui_kit.html` (the authoritative visual reference). This
14  file is the *system architecture*: how the UI is structured in code, what the
15  units of composition are, how state flows between them.
16  
17  ---
18  
19  ## TL;DR
20  
21  - **Hybrid mode UI**: retained workspace shell (panes are long-lived stateful objects you can drag between slots) + immediate-mode widget functions inside panes (buttons, chips, rows — drawn each frame from state).
22  - **Two-tier layout**: a workspace template defines named **slots** (edge slots + one fill slot); each mode assigns specific **panes** to those slots. Slot names are positional and generic (`side_a`, `main`, `status_top`); pane names are stable identities (`code_editor`, `agent_oracle`).
23  - **RectCut** is the layout primitive inside panes. Small module (~50 lines), mutating-parent style, supplemented by helpers (contract, center, split_h/v).
24  - **Model–view separation** (✅ shipped Phase 1 Part 2 step 7): a separate `models` registry holds canvases, files, conversations etc. Each model has `{id, kind, version, content}`. Panes are *views* of models — they hold `self.model_id` and dereference via `model_get(id)`. Multiple panes can view the same model; edits propagate via per-frame version polling (`self.last_seen_version != self.model.version → re-validate view-local state`).
25  - **Two host types** for panes (✅ shipped Phase 1 Part 3 step 8): workspace **slot** host or canvas-**element** host (`embedded_view` element type). Same pane class either way — what differs is who calls `pane:update(dt, input, rect)` with what rect. Elements persist their `pane_id`, `pane_type`, `model_id` + bounds; the inner pane is created idempotently on load via `pane({id=..., type=..., model_id=...})`.
26  - **Pane content uses canvas-local coordinates** (✅ shipped Phase 1 Part 2 step 7b): element `(x, y)` is offset from the canvas origin (its pane's rect top-left), not from the window origin. Rendering translates by `(rect.x, rect.y)` via `layer_push`; input is translated the other way (`cx = mx - rect.x`). Two panes viewing the same canvas render identical content at identical canvas-local positions — the property that makes embedded views work.
27  - **Workspace owns input routing** (✅ recursive routing shipped Phase 1 Part 3). Drops drain once at the workspace; clicks, drops, focus-on-click, and cursor authority all resolve to the **deepest pane under the cursor** via `pane:find_pointer_target(cx, cy, rect)`, which walks into embedded views by default. The canvas type's callback applies override rules in priority order: (a) Alt held → outer wins (the "address the host" modifier); (b) outer has a selected element with cursor inside its bounds → outer wins (modal selection — clicks on an already-grabbed embed stay with the host); (c) cursor over an embedded view → recurse into it; (d) otherwise the host wins. Panes gate pointer-driven input on `pane_owns_pointer(self)`; drag continuations are NOT gated so a move/resize that started in one pane can wander out without being interrupted.
28  - **Indirect-cycle guard** (✅ Phase 1 Part 3): the canvas type maintains a module-local `rendering_panes` set so a pane that re-enters its own update during a frame's render walk (A embeds B embeds A, easy to construct via copy/paste) short-circuits with a red placeholder instead of stack-overflowing. Direct self-embedding is caught at the element level by `el.model_id ~= self.model_id`.
29  - **Selection by element reference, not index**. When another pane deletes an earlier element, indices shift; refs don't.
30  - **Click-outside-deselect** (✅ Phase 1 Part 3): a click anywhere a pane doesn't own clears that pane's `selected_el`. Combined with the existing same-pane empty-click branch, this gives the uniform rule "clicking outside the selected thing deselects it" regardless of pane boundaries.
... [25 more lines]

The file E:\a327ex\Anchor2\app\docs\ui_architecture.md has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\docs\ui_architecture.md has been updated successfully. (file state is current in your context — no need to Read it back)

The file C:\Users\adn\.claude\projects\E--a327ex\memory\project_anchor_app.md has been updated successfully. (file state is current in your context — no need to Read it back)

The file C:\Users\adn\.claude\projects\E--a327ex\memory\project_anchor_app.md has been updated successfully. (file state is current in your context — no need to Read it back)

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

User has answered your questions: "Story shape — one canvas per chapter, or one canvas with text-element chapters?"="This is irrelevant for now, it's not something that matters.", "Document index — filesystem-as-truth or explicit index file?"="We need to discuss this more.", "Where should we start Phase B?"="We need to discuss more.". You can now continue with the user's answers in mind.

User has answered your questions: "Switching between documents — sidebar, palette, both, or something else?"="Palette only for v1 (Recommended)", "Document creation — explicit palette command or auto-create?"="Palette command "New document" with title prompt (Recommended)", "Frontmatter — what does each canvas file's top-level table need?"="Just `title` for now (Recommended)". You can now continue with the user's answers in mind.

host.lua
scratch.lua

1    -- Auto-generated by canvas.lua. Safe to delete to reset.
2   return {
3     version = 1,
4     elements = {
5       {type="image", blob_id="blob:67a3a77ee5e9d83a.png", x=43, y=41, w=440, h=600},
6       {type="text", kind="h1", x=520, y=40, w=600, h=31, content={
7         {text="Story Title", style={}},
8       }},
9       {type="text", kind="body", x=517, y=100, w=603, h=54, content={
10        {text="This is a paragraph with ", style={}},

1    --[[
2     Anchor app — Phase 1, end of step 4 (workspace + template loader).
3   
4     This file is the entry point: it sets up the engine, theme, fonts, the UI
5     layer, then delegates per-frame rendering to the workspace shell. The
6     workspace walks a template (slots), looks up which pane is in each slot
7     (mode binding), and calls each pane's :update(dt, input, rect).
8   
9     Update vs draw: all UI work — hit-testing, state machine, layer command
10    queueing — runs from `update(dt)`. `draw()` is two lines that flush the UI
11    layer to the screen. See `docs/ui_architecture.md` § 4 "Why one method, not
12    two" for the reasoning.
13  
14    Resolution model: see plan.md "Resolution Model". UI code is written in raw
15    logical pixels. dpr=1 today on a single 1920×1080 monitor; the engine handles
16    device-pixel sizing internally when dpr changes (HiDPI / WASM publishing).
17    Nothing in this file should assume dpr=1.
18  
19    Filter mode: every UI layer + font is smooth (SDF edges, grayscale atlas,
20    linear sampling). Rough mode is reserved for embedded pixel-art game views.
21  
22    Authoritative visual reference: docs/mockup_v2_ui_kit.html.
23  ]]
24  
25  require('anchor')({
26    width = 1920,
27    height = 1080,
28    title = 'Anchor',
29    scale = 1,
30    vsync = true,
... [70 more lines]

206:    canvas_left  = 'canvas_b',
218:pane({id='global_status_top', type='status_top'})
219:pane({id='global_status_bot', type='status_bot'})
220:pane({id='panel_a',           type='panel', title='Panel A'})
221:pane({id='panel_b',           type='panel', title='Panel B'})
222:pane({id='main_canvas',       type='canvas', model_id='canvas:scratch'})
223:-- canvas_b views a SEPARATE model ('canvas:host') so it can host an
225:-- canvas_left shows canvas_b (canvas:host with the embed), canvas_right
227:-- over canvas_b to spawn an embed; drops into canvas:scratch then show
229:pane({id='canvas_b',          type='canvas', model_id='canvas:host',    bg=theme.bg_inset})

190  })
191 
192 workspace_register_mode('bare', {
193   template = 'bare',
194   panes    = {
195     status_top = 'global_status_top',
196     status_bot = 'global_status_bot',
197     main       = 'main_canvas',
198   },
199 })
200 
201 workspace_register_mode('split', {
202   template = 'split',
203   panes    = {
204     status_top   = 'global_status_top',
205     status_bot   = 'global_status_bot',
206     canvas_left  = 'canvas_b',
207     canvas_right = 'main_canvas',
208     middle       = 'panel_a',
209   },
210 })
211 
212 -- Pane instances. status_top / status_bot are workspace-global panes that
213 -- live in every mode. side_a / side_b host panel placeholders so drag-to-
214 -- swap has multiple swappable targets. main_canvas is the free-flowing
215 -- canvas (drop image files onto it; sub-step 2). panel_b is unused in
216 -- compose and bare modes — it stays in memory and reappears when kit is
217 -- reactivated.
218 pane({id='global_status_top', type='status_top'})
219 pane({id='global_status_bot', type='status_bot'})
... [30 more lines]

1    --[[
2     model — typed data containers with version counters for the
3     model-view split (see docs/ui_architecture.md § 5).
4   
5     Each model is a plain table with:
6       id      stable string identity (e.g. 'canvas:scratch',
7               'file:/abs/path', 'conversation:oracle:abc'). Used as the
8               key into the global `models` registry and the value held
9               by pane.model_id.
10      kind    string type tag ('canvas', 'file', 'conversation', ...).
11              Views dispatch on it; mutators are kind-specific.
12      version monotonically-increasing integer, bumped on every
13              mutation. Views (panes) poll this each frame and re-derive
14              their display state when it changes.
15      content kind-specific data. For 'canvas': {elements = {...}}.
16              For 'file' (future): {bytes = '...', dirty = bool}. Etc.
17  
18    Mutations are direct field access on the .content table. Always
19    call model_bump(m) after mutating to signal the change to any
20    views. The bump is what views poll for.
21  
22    One model per id; calling model_new with a duplicate id is an
23    error (prevents accidental clobbering of someone else's state).
24    Use model_get for lookup-or-nil.
25  
26    Why polling instead of subscribe/notify: Anchor 2's design avoids
27    event subscription. Polling each frame matches every other "react
28    to other entity's state" pattern in the framework (see CLAUDE.md
29    "Poll, don't subscribe"). The cost is one integer compare per
30    view per frame — negligible.
... [24 more lines]

No matches found

2:  content_store — content-addressed blob store for canvas elements.
15:  Only `content_store_resolve` ever has to know which it is — the rest of
23:content_store_dir = 'data/blobs'
32:function content_store_init()
74:-- content_store_put(source_path) -> blob_id, err
78:function content_store_put(source_path)
89:  local dest = string.format('%s/%s.%s', content_store_dir, hex, ext)
104:function content_store_path(blob_id)
107:  return content_store_dir .. '/' .. rest
112:function content_store_resolve(blob_id)
113:  local path = content_store_path(blob_id)

File created successfully at: E:\a327ex\Anchor2\app\documents.lua (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\main.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\main.lua has been updated successfully. (file state is current in your context — no need to Read it back)

30   -- target already exists; the `2>nul` / `2>/dev/null` swallows that so
31  -- repeated calls are silent.
32  function content_store_init()
33    if package.config:sub(1, 1) == '\\' then
34      -- Cmd's mkdir creates intermediate dirs and exits 1 (with a stderr
35      -- message we redirect away) when the target already exists, so this
36      -- is idempotent.
37      os.execute('mkdir "data\\blobs" 2>nul')
38    else
39      os.execute('mkdir -p data/blobs')
40    end
41  end
42  
43  local function path_extension(path)
44    local ext = path:match('%.([^%.\\/]+)$')
45    return ext and ext:lower()
46  end
47  
48  -- FNV-1a 64-bit hash of a binary string. Lua 5.4 integers are 64-bit and
49  -- multiplication wraps modulo 2^64 by definition, so no manual masking.
50  local function fnv1a64(data)
51    local h = 0xcbf29ce484222325
52    for i = 1, #data do
53      h = (h ~ string.byte(data, i)) * 0x100000001b3
54    end
55    return h
56  end
57  
58  local function read_file_all(path)
59    local f = io.open(path, 'rb')
... [20 more lines]

The file E:\a327ex\Anchor2\app\main.lua has been updated successfully. (file state is current in your context — no need to Read it back)

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\data\canvases\scratch.lua has been updated successfully. (file state is current in your context — no need to Read it back)

1    -- Auto-generated by canvas.lua. Safe to delete to reset.
2   return {
3     version = 1,
4     elements = {
5       {type="embedded_view", pane_id="embed:6a01f1b4_f0df8a9b", pane_type="canvas", model_id="canvas:scratch", x=28, y=45, w=544, h=408},

The file E:\a327ex\Anchor2\app\data\canvases\host.lua has been updated successfully. (file state is current in your context — no need to Read it back)

(Bash completed with no output)

host | Host (with embedded scratch) | data/canvases/host.lua
scratch | Scratch | data/canvases/scratch.lua

created: test_doc    |   My Test Doc |   data/canvases/test_doc.lua
-- Auto-generated by canvas.lua. Safe to delete to reset.
return {
  version = 1,
  title = "My Test Doc",
  elements = {
  },
}

 -  host    |   Host (with embedded scratch)
 -  test_doc    |   My Test Doc
 -  scratch |   Scratch
cleanup done

1    --[[
2     pane — class + type registry for workspace panes.
3   
4     A pane is a long-lived stateful UI object: file browser, agent panel,
5     code editor, status bar, etc. Each pane has:
6       - id        stable string identity, used in templates / persistence
7       - type      string, looked up in pane_types for behavior
8       - state     per-instance state table (scroll, cursor, fold-state, etc.)
9       - model_id  optional reference to a model (for view/model split)
10  
11    Pane types vs subclassing
12    -------------------------
13    Anchor 2's class() has no inheritance ("if you want a variant, copy and
14    modify"), so we don't subclass pane for each type. Instead:
15  
16      - There is ONE pane class with shared lifecycle plumbing.
17      - Each pane TYPE is a plain table of callbacks registered in
18        pane_types via pane_register_type(name, def).
19      - pane:update / :serialize / :destroy dispatch to the type's
20        callbacks if present.
21  
22    This keeps the stateful object (genuinely OOP) separate from the
23    per-type behavior (procedural data), matching the framework convention.
24  
25    Why panes don't use make_entity
26    -------------------------------
27    Panes manage their own registry (panes, keyed by pane.id) and have an
28    explicit destroy step. They don't need the entity system's collision
29    events, deferred kill queue, or numeric ids. If a specific pane type
30    needs entity integration later, its init callback can call
... [132 more lines]

canvas.lua  :    OK
documents.lua:  OK
main.lua    :   OK

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

E:\a327ex\a327ex-site\static\new-theme.css:15:  width: 500px;
E:\a327ex\a327ex-site\static\new-theme.css:17:  max-width: 100%;
E:\a327ex\a327ex-site\static\new-theme.css:63:  width: 100%;
E:\a327ex\a327ex-site\static\new-theme.css:78:  min-width: var(--sidebar-width);
E:\a327ex\a327ex-site\static\new-theme.css:100:  width: var(--sidebar-width);
E:\a327ex\a327ex-site\static\new-theme.css:138:  width: calc(var(--sidebar-width) + 17px); /* keep to accommodate scrollbar */
E:\a327ex\a327ex-site\static\new-theme.css:186:  width: 100%;
E:\a327ex\a327ex-site\static\new-theme.css:222:  width: 12px;
E:\a327ex\a327ex-site\static\new-theme.css:248:  width: 1px;
E:\a327ex\a327ex-site\static\new-theme.css:274:  width: 15px;
E:\a327ex\a327ex-site\static\new-theme.css:311:  width: 16px;
E:\a327ex\a327ex-site\static\new-theme.css:332:  min-width: 200px;
E:\a327ex\a327ex-site\static\new-theme.css:333:  max-width: 320px;
E:\a327ex\a327ex-site\static\new-theme.css:359:  width: 28px;
E:\a327ex\a327ex-site\static\new-theme.css:389:  width: 16px;
E:\a327ex\a327ex-site\static\new-theme.css:411:  min-width: 200px;
E:\a327ex\a327ex-site\static\new-theme.css:412:  max-width: 320px;
E:\a327ex\a327ex-site\static\new-theme.css:442:  --sidebar-width: 280px;
E:\a327ex\a327ex-site\static\new-theme.css:443:  --main-width: 800px;
E:\a327ex\a327ex-site\static\new-theme.css:448:  width: 100%; padding: 0; margin: 0 auto;
E:\a327ex\a327ex-site\static\new-theme.css:533:@media (max-width: 768px) {
E:\a327ex\a327ex-site\static\new-theme.css:561:    width: 100%;
E:\a327ex\a327ex-site\static\new-theme.css:575:  width: auto;
E:\a327ex\a327ex-site\static\new-theme.css:627:  width: 100%;
E:\a327ex\a327ex-site\static\new-theme.css:643:  width: 100%;
E:\a327ex\a327ex-site\static\new-theme.css:682:  max-width: 704px;
E:\a327ex\a327ex-site\static\new-theme.css:705:  max-width: 100%;
E:\a327ex\a327ex-site\static\new-theme.css:708:  width: auto;
E:\a327ex\a327ex-site\static\new-theme.css:719:  width: 12px;
E:\a327ex\a327ex-site\static\new-theme.css:734:#footnotes hr {border-top-width: 2px;margin-bottom:20px}
... [2 more lines]

440    --padding: 1.4rem;
441   --navigation-height: 3em;
442   --sidebar-width: 280px;
443   --main-width: 800px;
444 }
445 
446 /* General resets */
447 html, body {
448   width: 100%; padding: 0; margin: 0 auto;
449   color: var(--text-color); background: var(--background-color);
450   font-family: var(--font-family); font-size: var(--font-size); line-height: var(--line-height);
451   text-rendering: optimizelegibility;
452   -moz-osx-font-smoothing: grayscale
453 }
454 
455 hr {
456   border: none;
457   border-top: 1px solid var(--border-color);
458   margin: 1em 0;
459 }
460 
461 .column-container {
462   display: flex;
463   margin: 0;
464   padding: 0;

1538   if key_is_released(key) then
1539        state[key] = nil
1540        return false
1541      end
1542      if key_is_pressed(key) then
1543        state[key] = time + KEY_REPEAT_DELAY
1544        return true
1545      end
1546      if key_is_down(key) and state[key] and time >= state[key] then
1547        state[key] = time + KEY_REPEAT_RATE
1548        return true
1549      end
1550      return false
1551    end
1552    
1553    -- Default size of a freshly-spawned text element. Width is what the
1554    -- user picks (paragraph block); height auto-fits the rendered content
1555    -- (one line of body font on spawn, growing as the user types).
1556    local SPAWN_TEXT_W = 400
1557    
1558    -- Spawn an empty body-kind text element at the given canvas-local pos.
1559    -- Returns the element. Uses make_add_command so the spawn is undoable
1560    -- and the model bump propagates to all views (same pattern as image
1561    -- drop and embedded_view spawn).
1562    local function spawn_text_element_at(host, cx, cy)
1563      local body_font = fonts.serif_body
1564      local h = body_font and body_font.height or 16
1565      local el = {
1566        type    = 'text',
1567        kind    = 'body',
... [50 more lines]

1617     h = h,
1618      }
1619      local cmd = make_add_command(host.id, el)
1620      cmd:apply()
1621      undo_push(cmd)
1622      return el
1623    end
1624    
1625    pane_register_type('canvas', {
1626      -- Pointer target resolution: walk into embedded_view elements so that
1627      -- clicks / drops / cursor land in the embed's inner pane rather than
1628      -- the host canvas. The workspace calls this each frame on the slot's
1629      -- top pane to find the deepest pane under the cursor.
1630      --
1631      -- Three override rules return self (skip embed routing):
1632      --   (a) Alt held — explicit "address the outer" modifier. Used to
1633      --       initially grab an embed for arrangement, since otherwise
1634      --       clicks pass through to the embed's interior.
1635      --   (b) Outer has a selected element and cursor is inside its bounds.
1636      --       "Modal" selection: once you've grabbed an embed in the outer,
1637      --       further clicks on it stay with the outer until you click
1638      --       outside to deselect. Without this, you couldn't drag-move an
1639      --       already-selected embed without holding Alt continuously.
1640      --   (c) Outer has a selected element and cursor is on its resize
1641      --       handles (which sit INSIDE the element's bounds). Subsumed by
1642      --       (b) in practice — kept implicit via the bounds check.
1643      --
1644      -- Otherwise, find the topmost embedded_view containing the cursor
1645      -- (back-to-front, matching draw / hit-test order) and recurse with
1646      -- embed-local cursor + a window-space rect for the embed.
... [15 more lines]

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

File created successfully at: E:\a327ex\Anchor2\app\actions.lua (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\main.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\main.lua has been updated successfully. (file state is current in your context — no need to Read it back)

actions.lua: OK
main.lua   :    OK
slug check ("Chapter 1: The Start" -> "chapter-1-the-start"):    present

"Chapter 1: The Start"         -> "chapter-1-the-start"
"My First Chapter"             -> "my-first-chapter"
"Foo"                          -> "foo"
"   Trim me   "                -> "trim-me"
"!@#$%^"                       -> ""
""                             -> ""
"a---b"                        -> "a-b"
"na�ve"                        -> "na-ve"

1    --[[
2     workspace — the shell that hosts panes in slots defined by a template.
3   
4     Two registries + one piece of state:
5       workspace_templates  template name → ordered list of slot definitions
6       workspace_modes      mode name     → {template=<name>, panes={slot=pane_id, ...}}
7       workspace_state      active mode + cached resolved template + slot→pane map
8   
9     Templates are ordered arrays of slot defs. The order matters: edge slots
10    cut from the workspace rect one at a time in declaration order, then a
11    fill slot (if present) takes whatever's left. Each slot def is one of:
12  
13      {name='status_top', edge='top',    size=24}
14      {name='status_bot', edge='bottom', size=22}
15      {name='side_a',     edge='left',   size=320}
16      {name='side_b',     edge='right',  size=360}
17      {name='main',       fill=true}
18  
19    Modes bind specific pane ids to slot names. Two modes can share a
20    template — pane assignment is decoupled from layout.
21  
22    Per-frame work (called from main.lua's update(dt)):
23      1. workspace_compute_slot_rects() walks the template, returns
24         {slot_name → rect}.
25      2. For each (slot, pane_id) in the active mode's binding, look up the
26         pane in `panes` (from pane.lua) and call pane:update(dt, input,
27         slot_rect).
28  
29    Step 4 implements only this. Drag-to-swap (step 5), mode switching with
30    persistence (step 6), and splitter resize / free-form override
... [90 more lines]

120  function workspace_compute_slot_rects()
121   local tpl = workspace_state.template
122   if not tpl then return {} end
123   local r = rect_new(0, 0, width, height)
124   local slots = {}
125   for _, slot in ipairs(tpl) do
126     if     slot.edge == 'top'    then slots[slot.name] = rect_cut_top(r,   slot.size)
127     elseif slot.edge == 'bottom' then slots[slot.name] = rect_cut_bot(r,   slot.size)
128     elseif slot.edge == 'left'   then slots[slot.name] = rect_cut_left(r,  slot.size)
129     elseif slot.edge == 'right'  then slots[slot.name] = rect_cut_right(r, slot.size)
130     elseif slot.fill             then slots[slot.name] = r
131     else error('slot ' .. tostring(slot.name) .. ' has no edge or fill') end
132   end
133   return slots
134 end
135 
136 local function point_in_rect(px, py, r)
137   return px >= r.x and px < r.x + r.w and py >= r.y and py < r.y + r.h
138 end
139 
140 -- Hit-test all slot rects against (mx, my). Returns slot name or nil.
141 local function slot_at(rects, mx, my)
142   for name, r in pairs(rects) do
143     if point_in_rect(mx, my, r) then return name end
144   end
145   return nil
146 end
147 
148 -- The pane that currently owns input (clicks, keys, drops, cursor). Walks
149 -- through nested hosts so that, for instance, an embedded view inside a
... [170 more lines]

320  --
321 -- Before popping the stack, ask every pane to flush any pending state
322 -- (e.g. an in-flight coalesced text-edit). Otherwise the typing the user
323 -- did in this session wouldn't be on the stack yet, and Ctrl+Z would
324 -- silently undo the gesture before that one.
325 local function flush_pane_undo_state()
326   for _, p in pairs(panes) do
327     if p.flush_undo then p:flush_undo() end
328   end
329 end
330 
331 local function handle_undo_keys()
332   if not ctrl_held() then return end
333   if key_is_pressed('z') then
334     flush_pane_undo_state()
335     undo()
336   elseif key_is_pressed('r') then
337     flush_pane_undo_state()
338     redo()
339   end
340 end
341 
342 -- View clipboard (step 9). Ctrl+Shift+C captures the focused pane's
343 -- serialized state. Ctrl+Shift+V pastes — if the cursor is over a
344 -- canvas pane (top-level slot or nested embed), spawns an embedded_view
345 -- element at the cursor pointing at the captured pane_type + model_id.
346 --
347 -- Why this lives at the workspace: clipboard and focus are both
348 -- application-global, and "paste into the canvas under cursor" is the
349 -- same plumbing regardless of which pane spawned the copy. Workspace
... [200 more lines]

549  
550   paint_focus_border()
551   paint_drag_affordance(rects)
552   paint_drop_highlight(rects)
553   paint_drag_ghost(rects)
554 end
555 
556 -- ============================================================
557 -- Persistence (save / load active mode + per-mode slot assignments).
558 --
559 -- File format: a Lua module that returns a table:
560 --   return {
561 --     active_mode = 'kit',
562 --     per_mode    = {
563 --       kit     = {side_a = 'panel_b', side_b = 'panel_a', main = 'main_placeholder', ...},
564 --       compose = {side_b = 'panel_a', main = 'main_placeholder', ...},
565 --     },
566 --   }
567 -- Hand-editable and version-control-friendly. Saved to .workspace_state.lua
568 -- in the app's working directory; safe to delete to reset.
569 -- ============================================================
570 
571 -- Write the current workspace state to STATE_FILE. Called on every mutation
572 -- (drag swap, mode switch). On error, prints to stderr but doesn't crash —
573 -- losing one save is better than crashing the app.
574 function workspace_save_state()
575   local f, err = io.open(STATE_FILE, 'w')
576   if not f then
577     io.stderr:write(('workspace_save_state: %s\n'):format(tostring(err)))
578     return
... [70 more lines]

136:ui_layer = layer_new('ui', 'smooth')
272:function draw()
273:  layer_render(ui_layer)
274:  layer_draw(ui_layer)

250  workspace_bind_mode_key('f2', 'compose')
251 workspace_bind_mode_key('f3', 'bare')
252 workspace_bind_mode_key('f4', 'split')
253 
254 -- Restore last session's layout if present; otherwise fall back to kit.
255 if not workspace_load_state() then
256   workspace_set_mode('kit')
257 end
258 
259 -- ============================================================
260 -- Engine entry points.
261 -- ============================================================
262 
263 local verify_mode = engine_get_args().verify ~= nil
264 
265 function update(dt)
266   sync_engine_globals()
267   ui_state_begin_frame()
268   workspace_update(dt, nil)
269   if verify_mode then engine_quit() end
270 end
271 
272 function draw()
273   layer_render(ui_layer)
274   layer_draw(ui_layer)
275 end
276 

No matches found

100  
101 local sans_path        = 'assets/IBMPlexSans-Regular.ttf'
102 local sans_semi_path   = 'assets/IBMPlexSans-SemiBold.ttf'
103 local serif_path       = 'assets/IBMPlexSerif-Regular.ttf'
104 local mono_path        = 'assets/CascadiaCode-Regular.ttf'
105 
106 -- Sizes match the kit's typography scale (display/section/ui_head/body/
107 -- body_compact/small/tiny/label). The full set is registered up-front; the
108 -- first slice only uses sans_brand + sans_label + mono_tiny + mono_small.
109 font_register('sans_brand',  sans_semi_path, 12)  -- top bar brand title (SemiBold)
110 font_register('sans_label',  sans_semi_path, 10)  -- bottom bar mode label (SemiBold, uppercase)
111 font_register('sans_body',   sans_path,      14)  -- prose body, default UI
112 font_register('sans_uihead', sans_semi_path, 16)  -- panel header titles
113 font_register('serif_body',  serif_path,     14)  -- long-form prose
114 font_register('mono_tiny',   mono_path,      10)  -- top/bottom bar metadata
115 font_register('mono_small',  mono_path,      11)  -- bottom bar center
116 font_register('mono_body',   mono_path,      13)  -- code, dense panels
117 
118 -- Text-element variants: italic / bold cuts of serif_body plus heading sizes.
119 -- Medium stands in for bold (no IBMPlexSerif-Bold ttf available). Headings
120 -- use Medium at larger sizes; their italic variant uses regular Italic for
121 -- now (heading-italic emphasis is uncommon in prose).
122 local serif_italic_path = 'assets/IBMPlexSerif-Italic.ttf'
123 local serif_medium_path = 'assets/IBMPlexSerif-Medium.ttf'
124 font_register('serif_body_italic', serif_italic_path, 14)
125 font_register('serif_body_bold',   serif_medium_path, 14)
126 font_register('serif_h1',          serif_medium_path, 24)
127 font_register('serif_h2',          serif_medium_path, 18)
128 
129 -- ============================================================
... [60 more lines]

The file E:\a327ex\Anchor2\app\workspace.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\workspace.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\workspace.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\workspace.lua has been updated successfully. (file state is current in your context — no need to Read it back)

2078:    if self.editing_el then
2634:    if self.editing_el then

2075     -- empty string. Since only the editing pane uses the result, that's
2076        -- harmless.
2077        local typed = engine_get_typed_text()
2078        if self.editing_el then
2079          local el = self.editing_el
2080          local mutated = false
2081          -- Tracks "did caret_index change this frame, and was it via
2082          -- something OTHER than Up/Down?" — used at the end of the
2083          -- editing block to decide whether to clear caret_desired_x.
2084          local start_caret = self.caret_index

2060     end
2061    
2062        -- Text editing keystrokes. The typed-text queue is drained even when
2063        -- no text element is being edited — the queue is bounded (32 events)
2064        -- and we don't want background typing to accumulate stale events
2065        -- that would suddenly land in the next edit session. When editing,
2066        -- typed UTF-8 inserts at the caret; Backspace deletes the codepoint
2067        -- before; Delete deletes the codepoint after. All three mutate
2068        -- `el.content` in place, bump the model so other views see the
2069        -- change live, and save to disk on every keystroke (debouncing is a
2070        -- polish item — text canvases are small files and a per-keystroke
2071        -- save is well under one millisecond on this disk).
2072        --
2073        -- In split mode with multiple canvas panes, only the FIRST one to
2074        -- run this each frame drains anything; subsequent panes see an
2075        -- empty string. Since only the editing pane uses the result, that's
2076        -- harmless.
2077        local typed = engine_get_typed_text()
2078        if self.editing_el then
2079          local el = self.editing_el
2080          local mutated = false
2081          -- Tracks "did caret_index change this frame, and was it via
2082          -- something OTHER than Up/Down?" — used at the end of the
2083          -- editing block to decide whether to clear caret_desired_x.
2084          local start_caret = self.caret_index

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

2076     --
2077        -- In split mode with multiple canvas panes, only the FIRST one to
2078        -- run this each frame drains anything; subsequent panes see an
2079        -- empty string. Since only the editing pane uses the result, that's
2080        -- harmless.
2081        if self.editing_el and not workspace_modal_active() then
2082          local typed = engine_get_typed_text()
2083          local el = self.editing_el
2084          local mutated = false
2085          -- Tracks "did caret_index change this frame, and was it via
2086          -- something OTHER than Up/Down?" — used at the end of the
2087          -- editing block to decide whether to clear caret_desired_x.
2088          local start_caret = self.caret_index
2089          local consumed_vertical = false
2090    
2091          -- Wipe an active selection. Returns true if a selection existed
2092          -- and was deleted; caller can use the return to skip an
2093          -- additional single-char operation (e.g. Backspace on a selection
2094          -- deletes the range and stops; it does NOT then also delete the
2095          -- char before the collapsed caret).
2096          local function consume_selection()
2097            if self.caret_anchor == self.caret_index then return false end
2098            local lo = math.min(self.caret_anchor, self.caret_index)
2099            local hi = math.max(self.caret_anchor, self.caret_index)
2100            delete_range(el.content, lo, hi)

panes/canvas.lua: OK
workspace.lua: OK
main.lua: OK
documents.lua: OK
actions.lua: OK

File created successfully at: E:\a327ex\Anchor2\app\panes\palette.lua (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\main.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\main.lua has been updated successfully. (file state is current in your context — no need to Read it back)

panes/canvas.lua: OK
panes/palette.lua: OK
workspace.lua: OK
main.lua: OK
documents.lua: OK
actions.lua: OK

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

File created successfully at: C:\Users\adn\.claude\projects\E--a327ex\memory\feedback_test_instructions_per_task.md (file state is current in your context — no need to Read it back)

The file C:\Users\adn\.claude\projects\E--a327ex\memory\MEMORY.md has been updated successfully. (file state is current in your context — no need to Read it back)

100      parallax_y = 1,
101   }
102   if layers then
103     layers[name] = lyr
104   end
105   return lyr
106 end
107 
108 function layer_rectangle(lyr, x, y, w, h, color)
109   eng.rectangle(lyr_handle(lyr), x, y, w, h, color)
110 end
111 
112 function layer_circle(lyr, x, y, radius, color)
113   eng.circle(lyr_handle(lyr), x, y, radius, color)
114 end
115 
116 function layer_rectangle_line(lyr, x, y, w, h, color, line_width)
117   eng.rectangle_line(lyr_handle(lyr), x, y, w, h, color, line_width or 1)
118 end
119 

1    --[[
2     color — mutable RGBA color with HSL conversion helpers.
3   
4     Simpler than v1's color class. A color is a plain table {r, g, b, a} with
5     a __call metamethod that returns the packed rgba integer used by drawing
6     functions. No auto-sync between RGB and HSL — HSL is a *conversion*, not a
7     storage format. If you want to modify hue, convert to HSL, modify, convert
8     back.
9   
10    Usage:
11      red = color_new(255, 0, 0)
12      red.a = 128              -- set alpha
13      layer_circle(game_layer, x, y, r, red())  -- __call returns packed rgba integer
14  
15      -- HSL manipulation:
16      h, s, l = color_to_hsl(red)
17      h = (h + 120) % 360      -- shift hue
18      shifted = color_from_hsl(h, s, l, red.a)
19  
20      -- Common operations:
21      copy = color_clone(red)
22      mixed = color_mix(red, blue, 0.5)
23      dark = color_darken(red, 0.5)      -- multiply RGB by 0.5
24      light = color_lighten(red, 1.5)    -- multiply RGB by 1.5 (clamped)
25      inverted = color_invert(red)
26  
27    Design notes:
28      - Colors are plain tables. Modify fields directly: c.r = 100.
29      - Procedural functions (color_mix, color_clone, etc.) return NEW colors,
30        not mutating the input. If you want to mutate, do `c.r = ...` directly.
... [151 more lines]

240      local panel_y   = math.floor(rect.h * 0.20)
241 
242     -- Backdrop: dim the rest of the screen so the modal reads as modal.
243     -- bg_deep is the existing "behind everything" shade; using it at low
244     -- alpha keeps the underlying content faintly visible.
245     layer_rectangle(ui_layer, 0, 0, rect.w, rect.h,
246       color(theme.bg_deep.r, theme.bg_deep.g, theme.bg_deep.b, 160))
247 
248     -- Panel background + 1px lavender border (lavender = navigation/
249     -- selection accent; peach is reserved for in-progress edit chrome).
250     layer_rectangle(ui_layer, panel_x, panel_y, PANEL_W, panel_h,
251       theme.bg_panel())

The file E:\a327ex\Anchor2\app\panes\palette.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

The file E:\a327ex\Anchor2\app\panes\palette.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

140  -- Workspace setup.
141 --
142 -- One template + one mode for now. Later phases add more modes (write, code,
143 -- browse, plan, compose, reference) and a hotkey to switch between them.
144 -- ============================================================
145 
146 workspace_register_template('kit', {
147   {name='status_top', edge='top',    size=24},
148   {name='status_bot', edge='bottom', size=22},
149   {name='side_a',     edge='left',   size=320},
150   {name='side_b',     edge='right',  size=320},
151   {name='main',       fill=true},
152 })
153 
154 workspace_register_template('compose', {
155   {name='status_top', edge='top',    size=24},
156   {name='status_bot', edge='bottom', size=22},
157   {name='side_b',     edge='right',  size=400},
158   {name='main',       fill=true},
159 })
160 
161 workspace_register_template('bare', {
162   {name='status_top', edge='top',    size=24},
163   {name='status_bot', edge='bottom', size=22},
164   {name='main',       fill=true},
165 })
166 
167 -- Two-canvas split. Both canvas slots are the same size and view the
168 -- same model — proves the model-view bet: same canvas content visible
169 -- identically in two separate frames, each with independent view state
... [100 more lines]

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

The file E:\a327ex\Anchor2\app\main.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

1741     -- Optional bg color override (color object). Useful when two canvas
1742        -- panes view the same model in adjacent slots — different bg colors
1743        -- make the slot boundary visible. Defaults to theme.bg_base.
1744        self.bg = (opts and opts.bg) or theme.bg_base
1745    
1746        -- `self.elements` is a direct alias for `self.model.content.elements`
1747        -- — convenient shorthand for the pane's own update code. Since we
1748        -- only mutate the elements list in place (insert/remove), the alias
1749        -- stays valid for the lifetime of the model.
1750        self.elements = self.model.content.elements
1751    
1752        -- Selection is stored as an element REFERENCE (not an index)
1753        -- because indices shift when another pane deletes an earlier
1754        -- element. A ref stays correct regardless of reordering.
1755        self.selected_el = nil
1756    
1757        -- Editing state for text elements (Phase A step 2b). When set,
1758        -- the element is being edited: caret will live inside it, typing
1759        -- mutates its content, and resize handles + drag-to-move are
1760        -- suppressed. Entered via double-click (existing text element OR
1761        -- empty area spawns a new element); exited via Escape, click on
1762        -- a different element, or click outside the pane.
1763        self.editing_el = nil
1764    
1765        -- Caret state — meaningful only when editing_el is set. Caret is a

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

E:/a327ex/Anchor2/app/.workspace_state.lua
EXISTS

1    -- Auto-generated by workspace.lua. Safe to delete to reset layouts.
2   return {
3     active_mode      = "kit",
4     interaction_mode = "element",
5     per_mode = {
6       ["kit"] = {
7         ["side_a"] = "panel_b",
8         ["status_top"] = "global_status_top",
9         ["side_b"] = "panel_a",
10        ["main"] = "main_canvas",
11        ["status_bot"] = "global_status_bot",
12      },
13      ["compose"] = {
14        ["status_bot"] = "global_status_bot",
15        ["main"] = "panel_a",
16        ["side_b"] = "panel_a",
17        ["status_top"] = "global_status_top",
18      },
19      ["bare"] = {
20        ["main"] = "main_canvas",
21        ["status_bot"] = "global_status_bot",
22        ["status_top"] = "global_status_top",
23      },
24      ["split"] = {
25        ["canvas_left"] = "canvas_b",
26        ["status_top"] = "global_status_top",
27        ["middle"] = "panel_a",
28        ["canvas_right"] = "main_canvas",
29        ["status_bot"] = "global_status_bot",
30      },
... [3 more lines]

DELETED

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

1233         y = sav.y or 0,
1234            w = sav.w or 400,
1235            h = sav.h or 300,
1236          })
1237        end
1238      end
1239      return elements
1240    end
1241    
1242    -- Get-or-create a canvas model for the given id. Idempotent — multiple
1243    -- panes calling with the same id all get the same model instance back,
1244    -- which is what makes data sharing work. On first call, reads the
1245    -- backing file and builds the model from it; on subsequent calls (or
1246    -- if the file is missing), returns the existing / freshly-empty model.
1247    --
1248    -- Stub-model-first pattern: we register an empty model BEFORE running
1249    -- read_canvas_elements so that embedded_view elements referencing this
1250    -- same canvas (directly or transitively) see an existing model and
1251    -- short-circuit out instead of re-entering this function. Without the
1252    -- stub, a self- or mutually-referencing canvas file would infinite-loop
1253    -- at load. After read_canvas_elements returns, we splice the loaded
1254    -- elements into the stub in-place so any panes that captured the model
1255    -- reference during the recursive load see the populated state.
1256    local function canvas_model_load(id)
1257      local existing = model_get(id)
1258      if existing then return existing end
1259      local m = model_new(id, 'canvas', {elements = {}})
1260      local path = canvas_path_for(id)
1261      local elements = path and read_canvas_elements(path) or {}
1262      for _, el in ipairs(elements) do
... [15 more lines]

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

1839     -- Caret state — meaningful only when editing_el is set. Caret is a
1840        -- single byte offset into the conceptual concatenation of all the
1841        -- editing element's runs (0 = before first byte; total = after last).
1842        -- caret_anchor is the other end of the selection range; when it
1843        -- equals caret_index there's no selection (just a caret), otherwise
1844        -- [min, max) is the selected byte span. caret_blink_t is the
1845        -- timestamp the caret last moved or changed (typing, click,
1846        -- navigation); used to keep the caret solid for a moment after a
1847        -- movement before the blink resumes.
1848        self.caret_index   = 0
1849        self.caret_anchor  = 0
1850        self.caret_blink_t = 0
1851    
1852        -- Per-key auto-repeat state for control keys in text editing
1853        -- (Backspace, Delete, Enter — eventually arrows in Step 2e). Each
1854        -- entry holds the timestamp the key next fires. After an initial
1855        -- delay (KEY_REPEAT_DELAY) following the press, the key fires at
1856        -- KEY_REPEAT_RATE intervals while held. We re-implement this in
1857        -- Lua rather than reading SDL's repeat flag because the SDL event
1858        -- loop's per-frame edge-detection collapses multiple repeats into
1859        -- one and we want full control of the cadence anyway.
1860        self.key_repeat_next = {}
1861    
1862        -- Pending text-edit session for undo coalescing. nil when no edit
1863        -- in flight; otherwise {el, pre (snapshot), pre_caret, kind, last_t}.
1864        -- See start_or_extend_pending_edit / finalize_pending_edit at the
1865        -- top of this file.
1866        self.pending_edit = nil
1867    
1868        -- Remembered visual column for vertical caret motion. Set when Up

1887:    self.last_seen_version = self.model.version
1941:      self.last_seen_version = self.model.version

1935         self.editing_el = nil
1936            -- Element gone (e.g. via undo of spawn). Drop any pending edit
1937            -- session silently — finalizing would push a cmd referencing a
1938            -- detached el, which future undos would mutate invisibly.
1939            self.pending_edit = nil
1940          end
1941          self.last_seen_version = self.model.version
1942        end
1943    
1944        -- Idle finalize for coalesced text edits. If the pending session
1945        -- has gone quiet past TEXT_EDIT_IDLE, promote it to an undo entry
1946        -- so Ctrl+Z right now would undo the just-typed text rather than
1947        -- whatever gesture came before.
1948        if self.pending_edit and (time - self.pending_edit.last_t) > TEXT_EDIT_IDLE then
1949          finalize_pending_edit(self)
1950        end
1951    
1952        local mx, my = mouse_position()
1953        -- Translate to canvas-local cursor: (cx, cy) is the cursor position
1954        -- in the pane's coordinate system, where (0, 0) is the top-left
1955        -- corner of the pane's rect and elements are positioned relative
1956        -- to it. All element interactions (hit-testing, drop position,
1957        -- drag offset, resize math, anchors) use canvas-local coords.
1958        -- Element rendering translates back to window space with a
1959        -- layer_push(rect.x, rect.y) below.
1960        local cx, cy = mx - rect.x, my - rect.y
1961        local ctrl_held = key_is_down('lctrl') or key_is_down('rctrl')
1962    
1963        -- Does the workspace's pointer resolution point at us this frame?
1964        -- Pointer-driven events (click, hover keys, cursor setting) gate on

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

825:local function hit_test_caret(lo, cx, cy)
1540:local function hit_test(elements, px, py)
1554:local function index_of(list, el)
1572:local function hit_handle(el, mx, my)
1762:pane_register_type('canvas', {

1552 -- nil if it's not present. Used by delete to remember insertion index
1553    -- for the undo command's revert (preserves z-order on un-delete).
1554    local function index_of(list, el)
1555      for i, e in ipairs(list) do
1556        if e == el then return i end
1557      end
1558      return nil
1559    end
1560    
1561    -- Hit-test the resize handles of a single element. All hit zones live
1562    -- INSIDE the image (so they aren't clipped by the canvas stencil at the
1563    -- canvas edge). Corner zones take priority over edge bands where they
1564    -- overlap. Returns one of:
1565    -- 'corner_tl', 'corner_tr', 'corner_bl', 'corner_br',
1566    -- 'edge_top', 'edge_bot', 'edge_left', 'edge_right', or nil.
1567    local function in_rect(px, py, x, y, w, h)
1568      return w > 0 and h > 0
1569         and px >= x and px < x + w
1570         and py >= y and py < y + h
1571    end
1572    local function hit_handle(el, mx, my)
1573      local s = HANDLE_SIZE
1574      -- Corners — same position as the visible square (TL anchored at the
1575      -- corner growing inward, etc.).
1576      if in_rect(mx, my, el.x,                  el.y,                 s, s) then return 'corner_tl' end

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

2476:      if key_pressed_or_repeated(self.key_repeat_next, 'left') then
2489:      if key_pressed_or_repeated(self.key_repeat_next, 'right') then
2512:      if lo and key_pressed_or_repeated(self.key_repeat_next, 'up') then
2526:      if lo and key_pressed_or_repeated(self.key_repeat_next, 'down') then

2474       end
2475    
2476          if key_pressed_or_repeated(self.key_repeat_next, 'left') then
2477            if ctrl_held then
2478              -- Ctrl+Left: word-wise back. Does NOT collapse a selection to
2479              -- its left edge first — the word-back step happens from the
2480              -- caret regardless of selection, and Shift controls whether
2481              -- the anchor follows. Matches Windows / VS Code.
2482              move_caret_to(ctrl_left_caret(el.content, self.caret_index))
2483            elseif not shift and self.caret_anchor ~= self.caret_index then
2484              move_caret_to(math.min(self.caret_anchor, self.caret_index))
2485            else
2486              move_caret_to(prev_codepoint_caret(el.content, self.caret_index))
2487            end
2488          end
2489          if key_pressed_or_repeated(self.key_repeat_next, 'right') then
2490            if ctrl_held then
2491              move_caret_to(ctrl_right_caret(el.content, self.caret_index))
2492            elseif not shift and self.caret_anchor ~= self.caret_index then
2493              move_caret_to(math.max(self.caret_anchor, self.caret_index))
2494            else
2495              move_caret_to(next_codepoint_caret(el.content, self.caret_index))
2496            end
2497          end
2498          if key_pressed_or_repeated(self.key_repeat_next, 'home') then
2499            if ctrl_held then
2500              move_caret_to(0)
2501            elseif lo then
2502              move_caret_to(caret_home_pos(lo, self.caret_index, total))
2503            end
... [45 more lines]

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

1378:local function make_add_command(pane_id, el)
1710:local function spawn_text_element_at(host, cx, cy)

1378 local function make_add_command(pane_id, el)
1379      return {
1380        pane_id = pane_id,
1381        el      = el,
1382        apply = function(c)
1383          local p = panes[c.pane_id]; if not p then return end
1384          table.insert(p.model.content.elements, c.el)
1385          model_bump(p.model)
1386          save_canvas(p.model)
1387        end,
1388        revert = function(c)
1389          local p = panes[c.pane_id]; if not p then return end
1390          remove_by_identity(p.model.content.elements, c.el)
1391          if p.selected_el == c.el then p.selected_el = nil end
1392          model_bump(p.model)
1393          save_canvas(p.model)
1394        end,
1395      }
1396    end
1397    
1398    local function make_delete_command(pane_id, el, index)
1399      return {

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

1710 -- user picks (paragraph block); height auto-fits the rendered content
1711    -- (one line of body font on spawn, growing as the user types).
1712    local SPAWN_TEXT_W = 400
1713    
1714    -- Spawn an empty body-kind text element at the given canvas-local pos.
1715    -- Returns the element. Uses make_add_command so the spawn is undoable
1716    -- and the model bump propagates to all views (same pattern as image
1717    -- drop and embedded_view spawn).
1718    local function spawn_text_element_at(host, cx, cy)
1719      local body_font = fonts.serif_body
1720      local h = body_font and body_font.height or 16
1721      local el = {
1722        type    = 'text',
1723        kind    = 'body',
1724        x       = math.floor(cx),
1725        y       = math.floor(cy),
1726        w       = SPAWN_TEXT_W,
1727        h       = h,
1728        content = {{text='', style={}}},
1729      }
1730      local cmd = make_add_command(host.id, el)
1731      cmd:apply()
1732      undo_push(cmd)
1733      return el
1734    end
1735    
1736    -- Spawn an embedded_view element in a host canvas pane. Reused by:
1737    --   * the E keybind (canvas's own quick-spawn), and

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

2359:      if key_pressed_or_repeated(self.key_repeat_next, 'enter') then

2350           end
2351            end
2352          end
2353    
2354          -- Enter inserts a newline into the current run. The layout treats
2355          -- '\n' as a hard line break (per the existing tokenizer); the
2356          -- caret follows past the inserted byte naturally via
2357          -- insert_at_caret. Coalesces with surrounding 'typing' so a burst
2358          -- of "hello[Enter]world" is one undo entry.
2359          if key_pressed_or_repeated(self.key_repeat_next, 'enter') then
2360            start_or_extend_pending_edit(self, el, 'typing')
2361            consume_selection()
2362            self.caret_index   = insert_at_caret(el.content, self.caret_index, '\n')
2363            self.caret_anchor  = self.caret_index
2364            self.caret_blink_t = time
2365            mutated = true
2366          end
2367    
2368          -- Ctrl+A / C / X / V — selection + OS-clipboard ops. Each
2369          -- requires Ctrl held AND Shift NOT held: Ctrl+Shift+C/V is the
2370          -- workspace's view-clipboard chord (handle_view_clipboard in
2371          -- workspace.lua), so we must not double-fire on those. The plain
2372          -- chords pass through the workspace's early-return and arrive
2373          -- here. Plain text only; styled-run information is dropped on
2374          -- copy and pasted-in text inherits the style of the run it
2375          -- lands in.
2376          local shift = key_is_down('lshift') or key_is_down('rshift')
2377    
2378          if ctrl_held and not shift and key_is_pressed('a') then
2379            -- Ctrl+A: select all. Selection change without mutation, but

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

1    -- Auto-generated by canvas.lua. Safe to delete to reset.
2   return {
3     version = 1,
4     title = "Scratch",
5     elements = {
6       {type="image", blob_id="blob:67a3a77ee5e9d83a.png", x=740, y=40, w=440, h=600},
7       {type="text", kind="h1", x=560, y=648, w=800, h=31, content={
8         {text="Story Title", style={}},
9       }},
10      {type="text", kind="body", x=560, y=687, w=800, h=36, content={
11        {text="This is a paragraph with ", style={}},
12        {text="bold", style={bold=true}},
13        {text=" and ", style={}},
14        {text="italic", style={italic=true}},
15        {text=" emphasis, plus some ", style={}},
16        {text="code()", style={code=true}},
17        {text=" inline. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.", style={}},
18      }},
19      {type="text", kind="h2", x=560, y=731, w=800, h=23, content={
20        {text="Subheading", style={}},
21      }},
22      {type="text", kind="body", x=560, y=762, w=800, h=36, content={
23        {text="A second paragraph to confirm word wrap at the chosen width, and to verify that ", style={}},
24        {text="line height adapts", style={italic=true}},
25        {text=" when runs mix fonts. The quick brown fox jumps over the lazy dog.", style={}},
26      }},
27      {type="text", kind="body", x=560, y=806, w=800, h=180, content={
28        {text="It's absolutetsasdy true.\
29  \
30  I completely and utterly cheated on you with her. Yes. I did it.aaaaaaaadsadsa\
... [17 more lines]

294:  local total_h = 0
412:  local total = 0
532:        local total = 0
547:        local total = 0
668:  local total = content_total_bytes(content)
859:  local total = 0
905:  local total = content_total_bytes(content)
1017:  local total = content_total_bytes(content)
1470:  local el = self.editing_el
2283:      local el = self.editing_el
2372:        local at_end       = self.caret_index == total
2522:      local total = content_total_bytes(el.content)
2887:      local el = self.editing_el

2278     -- run this each frame drains anything; subsequent panes see an
2279        -- empty string. Since only the editing pane uses the result, that's
2280        -- harmless.
2281        if self.editing_el and not workspace_modal_active() then
2282          local typed = engine_get_typed_text()
2283          local el = self.editing_el
2284          local mutated = false
2285          -- Tracks "did caret_index change this frame, and was it via
2286          -- something OTHER than Up/Down?" — used at the end of the
2287          -- editing block to decide whether to clear caret_desired_x.
2288          local start_caret = self.caret_index
2289          local consumed_vertical = false
2290    
2291          -- Wipe an active selection. Returns true if a selection existed
2292          -- and was deleted; caller can use the return to skip an

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

2518       --
2519          -- With an active selection, plain Left collapses to the left
2520          -- edge (without stepping) and plain Right collapses to the right
2521          -- edge — the standard editor convention. Shift+Left/Right always
2522          -- step the caret regardless of selection state, extending the
2523          -- range from anchor.
2524          --
2525          -- Up/Down preserve `caret_desired_x` so vertical motion through
2526          -- ragged lines tracks the user's intended column. The flag
2527          -- `consumed_vertical` below tells the end-of-block cleanup not
2528          -- to clear desired_x when only Up/Down fired this frame.
2529          local lo    = el._layout
2530          local total = content_total_bytes(el.content)
2531    

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

2208:          local shift = key_is_down('lshift') or key_is_down('rshift')
2403:      local shift = key_is_down('lshift') or key_is_down('rshift')

2200         self.caret_desired_x = nil
2201          elseif self.editing_el and hit_el == self.editing_el then
2202            -- E1. Click inside editing element → reposition caret.
2203            -- Shift+click extends the existing selection (anchor stays put);
2204            -- a plain click collapses any selection to a caret. Either way,
2205            -- start a 'selecting' drag so mouse-move extends the selection.
2206            local lo = self.editing_el._layout
2207            if lo then
2208              local shift = key_is_down('lshift') or key_is_down('rshift')
2209              local run_idx, offset = hit_test_caret(lo, cx - self.editing_el.x, cy - self.editing_el.y)
2210              local new_caret = run_offset_to_caret(self.editing_el.content, run_idx, offset)
2211              if not shift then self.caret_anchor = new_caret end
2212              self.caret_index = new_caret
2213              self.caret_blink_t = time
2214              self.caret_desired_x = nil
2215              self.drag.state = 'selecting'
2216            end
2217          else
2218            -- E2. Exit editing (if any), then run the normal single-click flow.
2219            exit_editing(self)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

519:local function make_text_edit_command(pane_id, el, pre, post, pre_caret, post_caret)
564:local function make_kind_change_command(pane_id, el, pre_kind, post_kind)
728:local function split_runs_at(content, byte_pos)
796:local function apply_style_to_range(content, lo, hi, style_name, value)

820  end
821 
822 -- Find the (run_idx, offset) for the caret position closest to a click
823 -- at (cx, cy) in element-local coords. If the element has no chars yet,
824 -- returns the start of the first run.
825 local function hit_test_caret(lo, cx, cy)
826   if #lo.chars == 0 then return 1, 0 end
827 
828   -- Find target line: first line whose bottom edge is below cy. If cy is
829   -- below all lines, use the last line.
830   local target_line = #lo.lines
831   for i, line in ipairs(lo.lines) do
832     if cy < line.y + line.height then target_line = i; break end
833   end
834 
835   -- Walk chars on the target line; for each, the caret can sit at its
836   -- left edge (x == ch.x) or right edge (x == ch.x + ch.advance). Take
837   -- the smallest distance.
838   local best_dist = math.huge
839   local best_run, best_offset
840   for _, ch in ipairs(lo.chars) do
841     if ch.line == target_line then

815        end
816     end
817     pos = pos + len
818   end
819   merge_adjacent_runs(content)
820 end
821 

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

562  -- snapshotting content. Caret is unaffected — same byte indices, just
563 -- different fonts/sizes during layout.
564 local function make_kind_change_command(pane_id, el, pre_kind, post_kind)
565   return {
566     pane_id = pane_id,
567     el      = el,
568     pre     = pre_kind,
569     post    = post_kind,
570     apply = function(c)
571       c.el.kind = c.post
572       local p = panes[c.pane_id]
573       if p then model_bump(p.model); save_canvas(p.model) end
574     end,
575     revert = function(c)
576       c.el.kind = c.pre
577       local p = panes[c.pane_id]
578       if p then model_bump(p.model); save_canvas(p.model) end
579     end,
580   }
581 end
582 
583 -- Finalize the pane's pending text edit (if any) by capturing the
584 -- current el.content as the `post` state and pushing an undo command.
585 -- Called on idle timeout, click, Ctrl+A, edit exit, and kind transitions.
586 -- Skips the push when content didn't actually change (cancelled session).
587 local function finalize_pending_edit(self)
588   local p = self.pending_edit
589   if not p then return end
590   self.pending_edit = nil
591   local post = clone_content(p.el.content)

1395:local function remove_by_identity(list, el)
1413:local function make_add_command(pane_id, el, insert_index)
1441:local function make_delete_command(pane_id, el, index)
1463:local function make_move_command(pane_id, el, pre_x, pre_y, post_x, post_y)
1480:local function make_resize_command(pane_id, el, pre, post)
1597:local function index_of(list, el)

1597 local function index_of(list, el)
1598      for i, e in ipairs(list) do
1599        if e == el then return i end
1600      end
1601      return nil
1602    end
1603    
1604    -- Find the next text element in `pane.elements` after `from_el`, in
1605    -- source order. Skips non-text elements (image / embedded_view) so the
1606    -- caret only flows between editable blocks. Returns nil if none.
1607    local function next_text_element(pane, from_el)
1608      local seen = false
1609      for _, el in ipairs(pane.elements) do
1610        if seen and el.type == 'text' then return el end
1611        if el == from_el then seen = true end
1612      end
1613      return nil
1614    end
1615    
1616    -- Find the previous text element in `pane.elements` before `from_el`,
1617    -- in source order. Returns nil if none.
1618    local function prev_text_element(pane, from_el)
1619      local last_text = nil
1620      for _, el in ipairs(pane.elements) do
1621        if el == from_el then return last_text end

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

1835:local function spawn_text_element_after(host, after_el)

1830 -- paragraph below it (in source order), and the auto-stack layout
1831    -- positions it on the next frame. Position fields (x, y) are zeroed —
1832    -- writing_mode_layout will override them; if the host pane isn't in
1833    -- writing mode the new element falls back to (0, 0) which is harmless
1834    -- for an empty paragraph the user is about to type into.
1835    local function spawn_text_element_after(host, after_el)
1836      local body_font = fonts.serif_body
1837      local h = body_font and body_font.height or 16
1838      local el = {
1839        type    = 'text',
1840        kind    = 'body',
1841        x       = 0,
1842        y       = 0,
1843        w       = SPAWN_TEXT_W,
1844        h       = h,
1845        content = {{text='', style={}}},
1846      }
1847      local after_idx = index_of(host.elements, after_el)
1848      -- after_idx + 1 = position to insert at (1-indexed for table.insert).
1849      local insert_at = after_idx and (after_idx + 1) or nil
1850      local cmd = make_add_command(host.id, el, insert_at)
1851      cmd:apply()
1852      undo_push(cmd)
1853      return el
1854    end
1855    
1856    -- Spawn an embedded_view element in a host canvas pane. Reused by:
1857    --   * the E keybind (canvas's own quick-spawn), and
1858    --   * the view clipboard's paste action (workspace-level).
1859    --

1823   undo_push(cmd)
1824      return el
1825    end
1826    
1827    -- Spawn an empty body-kind text element IMMEDIATELY AFTER `after_el`
1828    -- in the host's elements list. Used by the writing-mode Enter-at-end
1829    -- gesture: pressing Enter at the end of a paragraph creates the next
1830    -- paragraph below it (in source order), and the auto-stack layout
1831    -- positions it on the next frame. Position fields (x, y) are zeroed —
1832    -- writing_mode_layout will override them; if the host pane isn't in

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

1810   local body_font = fonts.serif_body
1811      local h = body_font and body_font.height or 16
1812      local el = {
1813        type    = 'text',
1814        kind    = 'body',
1815        x       = math.floor(cx),
1816        y       = math.floor(cy),
1817        w       = SPAWN_TEXT_W,
1818        h       = h,
1819        content = {{text='', style={}}},
1820      }
1821      local cmd = make_add_command(host.id, el)
1822      cmd:apply()
1823      undo_push(cmd)
1824      return el

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

467:local function clone_content(content)
1604:local function cross_element_flow(pane, old_el, new_el, direction, desired_x)

467  local function clone_content(content)
468   local out = {}
469   for _, run in ipairs(content) do
470     local style = {}
471     for k, v in pairs(run.style or {}) do style[k] = v end
472     table.insert(out, {text = run.text or '', style = style})
473   end
474   return out
475 end
476 
477 -- Compare two content snapshots. Treats two contents as equal if every
478 -- run matches in text + the same set of style flags. Used to skip

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

1604   local last_text = nil
1605      for _, el in ipairs(pane.elements) do
1606        if el == from_el then return last_text end
1607        if el.type == 'text' then last_text = el end
1608      end
1609      return nil
1610    end
1611    
1612    -- Move the editing caret into a different text element. Finalizes the
1613    -- current element's pending undo session (its own coalescing closes —
1614    -- a new element is a clean break), swaps `pane.editing_el`, and places
1615    -- the caret at the position appropriate for the flow direction:
1616    --   'down'  → first line of new_el at desired_x
1617    --   'up'    → last line of new_el at desired_x
1618    --   'right' → caret 0 (start of new_el)
1619    --   'left'  → caret = total bytes (end of new_el)
1620    -- `desired_x` is required for up/down (caller's caret_desired_x value);
1621    -- ignored for left/right. The new element's _layout is computed fresh
1622    -- here so the column-finder can run without waiting for the next
1623    -- frame's render.
1624    local function cross_element_flow(pane, old_el, new_el, direction, desired_x)
1625      finalize_pending_edit(pane)
1626      pane.editing_el   = new_el
1627      pane.selected_el  = new_el
1628      pane.pending_edit = nil
1629    
1630      local new_total = content_total_bytes(new_el.content)
1631      local new_lo    = layout_text_element(new_el)
1632      if new_lo then new_el._layout = new_lo end
1633    
... [22 more lines]

1655   -- new element.
1656    end
1657    
1658    -- Hit-test the resize handles of a single element. All hit zones live
1659    -- INSIDE the image (so they aren't clipped by the canvas stencil at the
1660    -- canvas edge). Corner zones take priority over edge bands where they
1661    -- overlap. Returns one of:
1662    -- 'corner_tl', 'corner_tr', 'corner_bl', 'corner_br',
1663    -- 'edge_top', 'edge_bot', 'edge_left', 'edge_right', or nil.
1664    local function in_rect(px, py, x, y, w, h)
1665      return w > 0 and h > 0
1666         and px >= x and px < x + w

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

2401:      if key_pressed_or_repeated(self.key_repeat_next, 'backspace') then

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

2401       if key_pressed_or_repeated(self.key_repeat_next, 'backspace') then
2402            start_or_extend_pending_edit(self, el, 'backspace')
2403            if consume_selection() then
2404              self.caret_blink_t = time
2405              mutated = true
2406            else
2407              local before = self.caret_index
2408              self.caret_index = backspace_at_caret(el.content, self.caret_index)
2409              self.caret_anchor = self.caret_index
2410              if self.caret_index ~= before then
2411                self.caret_blink_t = time
2412                mutated = true
2413              end
2414            end
2415          end
2416    
2417          if key_pressed_or_repeated(self.key_repeat_next, 'delete') then
2418            start_or_extend_pending_edit(self, el, 'delete')
2419            if consume_selection() then
2420              self.caret_blink_t = time
2421              mutated = true
2422            else

The file E:\a327ex\Anchor2\app\panes\canvas.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

1    --[[
2     status_bot — bottom status bar pane.
3   
4     Bg fill + 1px top border. Left: peach "UI KIT" mode label. Center: doc
5     / revision string in mono. Right: tokens / fonts / time chips.
6   
7     Replaces the old paint_botbar() in main.lua. Same visual; now a pane
8     type dispatched by the workspace shell.
9   ]]
10  
11  pane_register_type('status_bot', {
12    update = function(self, dt, input, rect)
13      layer_rectangle(ui_layer, rect.x, rect.y, rect.w, rect.h, theme.bg_panel())
14  
15      local bar = rect_new(rect.x, rect.y, rect.w, rect.h)
16      ui_divider({rect = rect_cut_top(bar, 1)})
17      local content = rect_contract(bar, 0, 10, 0, 10)
18  
19      ui_strip_text_left({strip=content, text='UI KIT', font=fonts.sans_label, color=theme.peach, gap=14})
20  
21      -- Interaction mode (element vs pane). Lavender when active in pane
22      -- mode (matches the focus-border accent it gates), muted otherwise so
23      -- the bar stays calm during the common element-mode case.
24      do
25        local imode = workspace_get_interaction_mode and workspace_get_interaction_mode() or 'element'
26        local label = (imode == 'pane') and 'PANE' or 'ELEMENT'
27        local color = (imode == 'pane') and theme.lavender or theme.text_muted
28        ui_strip_text_left({strip=content, text=label, font=fonts.sans_label, color=color, gap=14})
29      end
30  
... [17 more lines]

The file E:\a327ex\Anchor2\app\panes\status_bot.lua has been updated successfully. (file state is current in your context — no need to Read it back)

OK

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

128  (Text element itself is complete. Remaining items are infrastructure, not text-element features:)
129 - Action registry + keybinding map.
130 - Hot reload.
131 
132 ### Phase B — Writing mode + multi-document
133 
134 *(= subset of old Phase 2 + old Phase 6, scoped down.)*
135 
136 Make Phase A actually usable for writing the story over many sessions.
137 
138 **Deliverables:**
139 
140 - **Writing-mode template**: distraction-free single-column layout. One canvas pane filling the workspace; no side panels. Serif body font (`body_serif`), ~720 px column width, centered on `bg_base`. Mode accent green per `design.md` §11.3. Top + bottom status bars per the v2 design.
141 - **Multi-document file load/save**: today one canvas at `data/canvases/scratch.lua`. The story needs multiple chapters. Need at minimum:
142   - A document index — list of canvases with metadata (title, slug, kind, created, modified).
143   - A "switch document" action — palette or keybind. New / rename / delete actions too.
144   - Saved on disk somewhere stable (`data/index.lua` or one file per canvas with metadata in frontmatter-ish header).
145 - **Word/character count**: shown in the bottom status bar in writing mode. Total + selection if there is one.
146 - **Command palette**: fuzzy filter over the action registry. Required for "open document X", "new document", and eventually "publish". UI per `docs/mockup_v2_command_palette.html`.
147 - **Auto-save**: already in place per-mutation; just confirm it works correctly with multi-document and the new save path.
148 - **Optional, can defer to D**: chapter sidebar showing the list of documents in writing mode.
149 
150 **Milestone**: I open the app, switch to writing mode with one keybind, pick a chapter via palette or keybind, write prose. Word count is visible. Multiple sessions, story files persist. This becomes the primary tool I use to write — not Notepad, not NeoVim.
151 
152 **Open questions**:
153 
154 - **Story shape: one canvas with chapters as text elements, or many canvases (one per chapter)?** Probably many canvases — chapters are independently navigable, manageable file size, version-control-friendly. Each chapter is its own document.
155 - **Vim modal input — Phase B or later?** Default: later. It's a big lift that doesn't enable any new capability, just a different input style. Without it, the app still feels good if the keybinds are right.
156 - **Reading mode vs writing mode**: distinct modes (reading is locked, line spacing tuned for reading)? Or just rely on the WASM viewer in Phase C for reading and keep the app to writing? Lean toward the latter — the in-app experience is the writing one; the read experience is what visitors see on the site.
157 - **Format for the document index**: single `data/index.lua`, or implied from filesystem listing of `data/canvases/*.lua` + per-file metadata header? Latter is simpler and more robust (no second source of truth).
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30   
31  ## What's already shipped
32  
33  Phase 1 Parts 1–3 from the original plan + Phase A (text editing) from this focused plan. Full ledger in `plan.md` `## Current Status`. Short version:
34  
35  - **Workspace shell**: panes, slots, templates, modes (F1/F2/F3 + F4 split), persistence, Ctrl+drag pane swap.
36  - **Canvas pane**: drop image files from disk, select/move/resize/delete elements, undo/redo, persistence to `data/canvases/<name>.lua`.
37  - **Model layer**: shared models with version polling; two panes can view the same canvas.
38  - **Canvas-local coordinates**: two panes show identical content — the embed-friendly property.
39  - **Embedded views (step 8)**: a canvas can host another pane as an `embedded_view` element. Press E to spawn. Drops, clicks, keys, and cursor authority route to the deepest pane under the cursor; Alt addresses the host instead.
40  - **View clipboard (step 9)**: Ctrl+Shift+C captures the focused pane (or selected embed with dimensions); Ctrl+Shift+V pastes into the canvas under cursor.
41  - **Visible pane focus**: 1px lavender border around the focused pane, suppressed when an element inside it is selected so there's only one visual cue at a time.
42  - **Element / pane interaction modes** (Phase 2 Part 1): F10 toggles between **element** (default) and **pane** modes. In element mode, clicks operate on canvas elements without touching pane focus state, and Ctrl+drag pane-swap is disabled. Pane mode restores the prior behavior (click-to-focus, focus border, Ctrl+drag swap, swap-hover affordance). Status bar shows the current mode. Persisted across sessions in `.workspace_state.lua`.
43  - **Text element + editing** (Phase 2 Part 1 — focused-plan Phase A):
44    - Styled-runs content model: `{type='text', kind='body'|'h1'|'h2', x, y, w, h, content={{text, style={bold,italic,code}}, ...}}`. Word-wrapped at element width with force-break for over-wide single words. Auto-height: `el.h` follows rendered content.
45    - Element-level font selection by kind (body / h1 / h2) and per-run style (regular / italic / bold-via-medium / mono-for-code). Body color from `theme.text_primary`, headings from `theme.text_heading`, code from `theme.peach` (placeholder).
46    - Double-click empty canvas → spawn a body text element + immediately enter editing. Double-click on an existing text element → enter editing with caret at click position.
47    - Editing chrome: 1px peach border (no resize handles), distinct from the lavender selection chrome that shows in positioning mode.
48    - Caret rendering with blink (0.5 s solid hold after every movement, then 1 Hz on/off). Caret position is a byte index into the conceptual concatenation of all runs.
49    - Click-to-position caret while editing.
50    - Typing inserts at caret; **Backspace** / **Delete** remove codepoints (utf8-aware); **Enter** inserts `\n` (treated as a hard line break by the layout). Auto-repeat for held control keys (450 ms delay, ~50 Hz).
51    - Selection ranges via `caret_anchor` alongside `caret_index`. Drag to select; **Shift+click** to extend; **Ctrl+A** to select all.
52    - Selection-aware editing: typing / Backspace / Delete / Enter on an active selection deletes the range first (replace-on-type semantics).
53    - **Ctrl+C / Ctrl+X / Ctrl+V** clipboard via the engine's `clipboard_get` / `clipboard_set`. Plain-text only; styled-run information is dropped on copy.
54    - **Keyboard navigation** (Phase 2 Part 2): Left / Right step one codepoint (or collapse selection to that edge if one exists). Up / Down move by visual line with a `caret_desired_x` that survives consecutive vertical motions; Up at the top / Down at the bottom roll to 0 / total. Home / End jump to start / end of the visual line; Ctrl+Home / Ctrl+End to start / end of element. Ctrl+Left / Ctrl+Right are word-wise (ASCII alphanumerics + underscore). Shift on any of these extends from `caret_anchor`. Auto-repeat at 200 ms / 100 Hz (frame-rate-capped).
55    - **Formatting hotkeys** (Phase 2 Part 2): Ctrl+B / Ctrl+I / Ctrl+E toggle bold / italic / code on the current selection. Apply path splits runs at the selection's `[lo, hi)` boundaries, sets/clears the style flag on each enclosed run, then merges adjacent same-style runs. Code is mutually exclusive with bold + italic (applying one clears the other). Atomic undo per press. No-op without a selection.
56    - **Kind switching** (Phase 2 Part 2): Ctrl+1 / Ctrl+2 / Ctrl+3 set the editing element's `kind` to body / h1 / h2. Atomic undo per press; per-run style flags survive the kind change.
57    - Text-edit undo via global Ctrl+Z / Ctrl+R, with **coalescing**: same-kind mutations (`typing`, `backspace`, `delete`) within 1 s of idle extend a single undo entry. Different kind or idle timeout finalizes. Cut / paste / format-toggle / kind-switch are atomic (each press is its own entry). Workspace hooks every pane's `flush_undo` callback before popping the undo stack so in-flight coalesce sessions promote first.
58    - Exit editing on Escape, click-outside, or different-element click. Trailing `\n` bytes are stripped on exit (rolled into the same undo entry as the originating edit). Empty text elements auto-remove on exit (bypassing undo — silent cleanup).
59  - **Engine additions**: drop-event API, cursor API, focus-clickthrough hint, stencil-mask clear, **`SDL_TEXTINPUT` capture + `engine_get_typed_text()`** (Phase 2 Part 1), **default `SDL_StartTextInput()`** (Phase 2 Part 1), **removed Escape-to-quit** (Phase 2 Part 1 — Escape now means "exit editing").
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114  | Hot reload | ⏳ | Not yet. |
115 
116 **Milestone progress**: ✓ open the app, ✓ double-click empty canvas to spawn a text element, ✓ type prose, ✓ bold/italic/code via Ctrl+B/I/E on selection, ✓ heading via Ctrl+2/3 (Ctrl+1 back to body), ✓ select with mouse / keyboard / Ctrl+A, ✓ copy/paste, ✓ navigate with arrows + Home/End + Ctrl+arrow, ✓ undo (coalesced + atomic for formatting and kind), ✓ save (auto-persist), ✓ close, ✓ reopen — text preserved.
117 
118 **Open questions — resolved:**
119 
120 - ✅ **Headings in Phase A.** Shipped as `kind='h1'|'h2'`, switchable via Ctrl+1/2/3.
121 - ✅ **Styled runs**, not inline markers. Each element's `content` is a list of `{text, style}` runs.
122 - ✅ **Selection stops at element edges.** Cross-element selection deferred to Phase D if ever needed.
123 - ✅ **Caret-at-click-position** on entry into editing.
124 - ✅ **Code style exclusive with bold/italic.** Applying one clears the other; the data model stays honest about what renders.
125 
126 **Still outstanding for Phase A close-out:**
127 
128 (Text element itself is complete. Remaining items are infrastructure, not text-element features:)
129 - Action registry + keybinding map.
130 - Hot reload.
131 
132 ### Phase B — Writing mode + multi-document
133 
134 *(= subset of old Phase 2 + old Phase 6, scoped down.)*
135 
136 Make Phase A actually usable for writing the story over many sessions.
137 
138 **Deliverables:**
139 
140 - **Writing-mode template**: distraction-free single-column layout. One canvas pane filling the workspace; no side panels. Serif body font (`body_serif`), ~720 px column width, centered on `bg_base`. Mode accent green per `design.md` §11.3. Top + bottom status bars per the v2 design.
141 - **Multi-document file load/save**: today one canvas at `data/canvases/scratch.lua`. The story needs multiple chapters. Need at minimum:
142   - A document index — list of canvases with metadata (title, slug, kind, created, modified).
143   - A "switch document" action — palette or keybind. New / rename / delete actions too.
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1    # Anchor — The Omega App
2   
3   > **ON HOLD as of 2026-05-11.** Active development now follows [`plan_focused.md`](plan_focused.md), which restricts current scope to two features: writing (a story, mostly prose) and the website (a327ex.com, eventually served by the Anchor engine via WASM). This long-term plan remains the reference for everything beyond those two — phases 3, 4, 7–10 resume once the focused scope completes. Do not modify content here; record changes in `plan_focused.md` instead.
4   >
5   > Phase A (text editing) from the focused plan shipped 2026-05-13 as "Phase 2 Part 1". See `plan_focused.md` for the current status table.
6   
7   ## Vision
8   
9   The omega app is the next evolution of Anchor: a single application for all creative work, built entirely with the Anchor engine. It replaces the scattered collection of tools (Notepad, NeoVim, Claude Code, Explorer, DAW, browser) with one unified environment owned completely by the user.
10  
11  The core insight comes from 4 months of using Claude Code daily: AI is good enough that you stop reading code. Once you stop reading code, you lose ownership of the codebase. Once you lose ownership, you realize what you actually needed to own wasn't the code — it was the *environment*. The code is replaceable. The environment shapes everything.
12  
13  ### The Ownership Thesis
14  
15  Claude Code's terminal UX nudges you away from ownership. You see only the snippets the AI chose to focus on. There's no physicality, no sense of place in the codebase. The file is never yours. Tools like Cursor have an inherent advantage because the feeling of physicality and place turns out to be important.
16  
17  The solution: build your own space. Not just an editor — a complete workspace where every feature exists because it's needed, where AI integration works exactly right, where ownership is absolute because you built everything yourself.
18  
19  ### The Felt Sense of Place
20  
21  One framing that emerged was the app as a personal MMO — a 2D world where the "city" is the workspace. Different districts for different work, NPCs as AI agents, files as inventory items, quests as commitments. This isn't the practical implementation, but it surfaced something real: **the felt sense of place matters**. The reason code ownership was lost isn't just that code stopped being read — it's that there was never a *place* in it. The code existed nowhere. It was a stream of diffs.
22  
23  The practical version keeps the ideas with genuine functional benefit — spatial canvases, persistent AI agents, modes, filesystem-as-database — and drops the fantasy elements. Closer to a meticulously customized Emacs or a Bloomberg Terminal than to Stardew Valley. Dense, keyboard-first, information-rich, every pixel earning its place. But retaining warmth through considered visual design and the fact that it's a place built for oneself.
24  
25  ### Triple Use
26  
27  Everything built for this app has potentially triple use:
28  1. The development environment (daily work tool)
29  2. The website (a327ex.com rendered by the engine via WASM)
30  3. Artistic artifacts (games, interactive books, music)

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panes/canvas.lua: OK
panes/palette.lua: OK
panes/status_bot.lua: OK
workspace.lua: OK
main.lua: OK
documents.lua: OK
actions.lua: OK

160  | Backspace at start → merge with previous | ✅ | Atomic via `make_paragraph_merge_command`. Caret lands at the join boundary in the previous element. `merge_adjacent_runs` coalesces same-style boundary runs. |
161 | Word + character count | ✅ | Bottom status bar shows `words / chars`. With an active selection inside the editing element, switches to `selected / total` ratios for both. UTF-8 codepoint count. |
162 | Vim modal input | ⏳ | Deferred. The keyboard UX is good enough without it for now; revisit when cross-element selection becomes painful. |
163 | Chapter sidebar | ⏳ | Deferred — palette is enough for v1. |
164 | Rename / delete docs via palette | ⏳ | Deferred — only Open and New shipped. Add when needed. |
165 | In-app reading mode | ⏳ | Per the design call, skipped — Phase C's WASM viewer is the read experience. |
166 | Hot reload | ⏳ | Still not addressed. |
167 | Action registry as a full command-bus | ⏳ | Stubbed at 2 actions; promote to a full system when a third caller arrives. |
168 
169 **Milestone**: ✓ open the app, ✓ writing mode is the only thing, ✓ Ctrl+P shows documents, ✓ open one or create a new one with a title prompt, ✓ write prose with proper paragraph flow (Enter for next, Backspace at start to merge back, Shift+Enter for in-paragraph line breaks), ✓ word count is visible and selection-aware, ✓ everything persists across sessions. **This is the writing tool.**
170 
171 **Open questions — resolved during implementation:**
172 
173 - ✅ **Story shape**: irrelevant — both one-canvas-per-chapter and one-canvas-with-many-text-elements are reachable from the current model. The user gets to decide per-document.
174 - ✅ **Document index format**: filesystem-as-truth with per-file frontmatter `title`. No central index file.
175 - ✅ **Palette UX**: Ctrl+P opens, palette-only navigation (no sidebar), inline "+ New document" entry rather than separate prompt mode.
176 - ✅ **Multi vs one text element per paragraph**: multi (one paragraph = one text element). Enter spawns at end, Backspace merges at start, Shift+Enter for soft line breaks within a paragraph.
177 
178 **Cleanup deferred to a later session:**
179 
180 - Bottom status bar's "UI KIT" label (stale — refers to the removed kit mode).
181 - Bottom status bar's center "design_system_v2 · ui_kit · revision 2026-04-28" placeholder (should show the current document title).
182 
183 ### Phase C — Publishing: WASM viewer + server
184 
185 *(= old Phase 5, scoped to what writing + website actually needs.)*
186 
187 The website becomes Anchor App views. No markdown export.
188 
189 **Dependency: Track B HTTP client must land before "publish" actually works.** Engine work; flagged in `plan.md` as pending.
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258  These remain load-bearing and apply to this focused plan as well:
259 
260 - **Canvas-based documents.** Elements are positioned `(x, y, w, h)` blocks. A prose post is a canvas whose elements happen to be a column of text elements. Spatial freedom remains available even when not used.
261 - **Canvas-local coordinates.** Embed-friendly. Same canvas in two panes renders identically.
262 - **Native format, not markdown.** No source-vs-rendered split. The document IS its visual form, in app and on the web.
263 - **Model layer with version polling.** Multi-view works. No event subscriptions.
264 - **Per-pane filter mode + per-font filter mode.** Smooth UI, rough game embeds. Story content is all smooth.
265 - **Resolution model: logical pixels, dpr-correct internally.** Same as before. dpr=1 today; engine adjustments land when WASM publishing exposes higher-dpr visitor monitors (Phase C).
266 - **Visual reference**: `docs/mockup_v2_ui_kit.html` for primitives, `docs/mockup_v2_write.html` for writing mode, `docs/mockup_v2_canvas.html` for the canvas reference.
267 
268 ---
269 
270 ## Track B (still relevant): HTTP client
271 
272 Required for Phase C "publish" to work. Same engine work `plan.md` called out — one C library (mongoose or similar), async/callback mechanism so requests don't block the frame loop. Nothing new in this plan; flagging the dependency.
273 
274 ---
275 
276 ## Sequencing summary
277 
278 ```
279 Phase A (text editing)                — gating item
280     │
281 Phase B (writing mode + multi-doc)    — story becomes writable
282     │
283 Phase C (WASM + server publish)       — site becomes Anchor App views
284     │                                   (depends on Track B HTTP)
285 Phase D (story-shaped polish)         — as needed
286 ```
287 

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Launching skill: end-session

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