The corpus catches up with the wave — sixteen colors, a symbol browser, a hideable sidebar, and the context menu's four groups

Amendments the worktree agents owed but could not write: 03's palette
counts and the symbol full-browser reversal (CoreGlyphs-derived catalog),
05's sidebar visibility ruling, 11's Show Sidebar row and the card
context-menu row reshaped to the four-group structure with its two
flagged gaps (style pre-focus, the disabled Navigation pair).

Claude-Session: https://claude.ai/code/session_014PtZdPwqZuqEDLc6wZMtEy

DESIGN/05-card-window.md

@@ -9,7 +9,7 @@ The standalone per-card window. Opened by fast double-click, ⌘↩, or the cont
 Three **componentized panes** (re-composed 2026-07-29, comments design): a wide **body pane** (leading), the **comments pane** (middle, when shown — The comments column below), and the narrow **attributes sidebar** (trailing) — each an independent component with its own scroll, arranged by the window's layout rather than wired to each other; componentization is the rule, so the comments pane mounts beside the body or below it (the layout option, next) without either pane knowing which. Visual reference: [assets/card-sidebar-reference.png](assets/card-sidebar-reference.png) — a GitLab-style issue pane; its *pattern* (stacked small-caps sections, quiet read-first rows, actions at the bottom) is what carries over, not its enhanced-schema content.
 
 - **Body column, top to bottom**: the **title field** — large, borderless; edits write through to frontmatter on commit (Return or focus loss); clearing it removes the `title` key (titles are optional — the untitled placeholder shows here as on the face); Return commits and moves focus into the body. **Escape abandons** (settled — the board inline rename's abandon, applied here): the field reverts to the on-disk title and focus moves into the body, never a commit. The Edit-mode collision resolves by focus, 06-history-undo.md's first-responder rule: while the title field is focused, Escape is the title abandon even with the body in Edit; with the body editor focused, Escape is the Edit→Preview flip as specified. Beneath it, a **quiet created/modified line** ("Created ⟨date⟩ · Modified ⟨date⟩ · by ⟨modified-by⟩", secondary styling, omitting whichever keys are absent — the "by" segment renders only when the self-reported provenance stamp is present, 01-storage-format.md; this is provenance made visible where git history may not exist) — the read-only readout the pathfinder dropped with its inspector, back where the mockup puts it. Then the **body** (Preview/Edit, below).
-- **Attributes sidebar**: everything about the card that isn't the body — sections below. Fixed narrow width derived from font metrics (full relative scaling, 10-accessibility.md); the window's resize flex goes to the body.
+- **Attributes sidebar**: everything about the card that isn't the body — sections below. Fixed narrow width derived from font metrics (full relative scaling, 10-accessibility.md); the window's resize flex goes to the body. **The sidebar can be hidden** (2026-08-09, Pipeline card 1d2d1c77): View ▸ Show Sidebar and a toolbar toggle (`sidebar.right`, fourth default item) — app-wide, persisted, default on, Show Comments' shape; the window minimum shrinks with it and the reflow animates in the structural voice (crossfade under Reduce Motion).
 - **Body/comments layout is an option** (ruled 2026-07-29 — componentized panes make it cheap): side-by-side is the default; **View ▸ Comments Beside Body** unchecked stacks them — body pane above, comments pane below at a fixed ≈3:2 split, each keeping its own scroll — for narrow displays. App-wide, persisted. The panes are identical in both mounts, and the thread stays visible through body **Edit** in either (Edit swaps only the body pane's content — the sidebar's own precedent); the window's minimum width grows only while the column is shown side-by-side, and resize flex always goes to the body, never the fixed panes.
 
 (The pathfinder's compositions are both gone: the metadata bar — labels, assignees, due — left with those fields' move to the enhanced schema, and the horizontal attachments strip dissolves into the sidebar.)