Three curated symbol vocabularies — boards, lanes, and cards each pick from their own shelf

`CuratedSymbols` was one flat ~65-glyph list serving every style-editor target alike. It is
now three level-specific sets — `boards` (project/container/identity), `lanes`
(workflow/stage/status), `cards` (work-item/content) — each ~30-40 entries, seeded from the
original list and `SymbolPickerCatalog.defaultSet`, reorganized by which level a glyph actually
reads as being about. Overlap is kept where a glyph genuinely fits everywhere (`flag`, `star`).

Wiring:
- `BoardInfoPopover`'s board-glyph `SymbolPicker` now passes `CuratedSymbols.availableBoards`
  instead of the picker's domain-agnostic default.
- The card sidebar's `SymbolPicker` (`CardSidebarSections`) now passes
  `CuratedSymbols.availableCards` instead of the old flat `available`.
- The style editor's own curated grid (`StyleEditorView`, the Style… popover's only remaining
  anchor) reads `CuratedSymbols.availableForStyleEditor(level:spansLevels:)`: a homogeneous
  target reads its own level's set, and a target that somehow spans more than one level (today
  unreachable — 04-interactions.md's cards-XOR-lanes rule keeps a live selection homogeneous)
  reads the three combined, via a new `BoardStore.styleTargetSpansLevels` seam that asks the
  question `styleLevel(of:)` deliberately collapses.
- `CuratedSymbols.combined` (the three sets' stable-order union) also replaces the old `.all`
  in `SymbolPickerCatalog`'s full-catalog fallback.
- `SymbolPickerCatalog.defaultSet` is kept as the fallback for a caller naming no level (a
  future saved-search picker, say) rather than retired.

DESIGN/03-board-ui.md and DESIGN/05-card-window.md's Styling/sidebar prose amended minimally
where they named "the curated set" as a single list.

Tests: three new/rewritten suites in KanbanTests/StyleModelTests.swift (set shape, availability,
overlap, `combined`, the style-editor level/span decision, the board-anchor width tripwire), one
new test in KanbanTests/StyleWriteTests.swift (`styleTargetSpansLevels`), and the old
single-list-pinning tests in KanbanTests/SymbolPickerTests.swift and KanbanTests/CardSidebarTests.swift
updated to the new set names. 2834 tests, 487 suites green (KanbanTests, arm64); one unrelated
flaky failure (RootRecoveryTests.vanishAndReturn under full-suite load) passed clean in isolation.

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

DESIGN/03-board-ui.md

@@ -43,10 +43,10 @@ Toolbars are **pure enhancement**: every function they host already has a menu i
 
 ### Controls (settled)
 
-One **style editor** component — a background palette grid and a curated symbol grid — presented as a **popover** opened by Style… from a card/lane context menu or the menu bar (Board ▸ Style…, ⌥⌘S — 11-command-nexus.md; selection-aware: it styles the selected cards or lane, and with nothing selected, the board). One component, one behavior — replacing the pathfinder's swatch-row-plus-Style-popover split, whose functions were right and whose form wasn't. **The card window sidebar now styles through the compact `SymbolPicker` instead of this component** (2026-08-06 anchor-ownership rule for the background half; the symbol half followed the same way on 2026-08-08): the sidebar pairs the **color combo** (below) — standing in for the background half, the narrow context the combo was built for — with the picker's own well and popover-hosted `CuratedSymbols` grid, so this component now has exactly one anchor left, the Style… popover, which alone carries both grids in full. (The board popover was briefly a third anchor — the background half embedded in its Theme tab — until the 2026-08-07 Theme rework made that tab preset-only; Style… with nothing selected is the board's manual grid now, and the popover's symbol picker beside the rename field still owns the board glyph — the same `SymbolPicker` the card sidebar now uses.)
+One **style editor** component — a background palette grid and a curated symbol grid — presented as a **popover** opened by Style… from a card/lane context menu or the menu bar (Board ▸ Style…, ⌥⌘S — 11-command-nexus.md; selection-aware: it styles the selected cards or lane, and with nothing selected, the board). One component, one behavior — replacing the pathfinder's swatch-row-plus-Style-popover split, whose functions were right and whose form wasn't. **The card window sidebar now styles through the compact `SymbolPicker` instead of this component** (2026-08-06 anchor-ownership rule for the background half; the symbol half followed the same way on 2026-08-08): the sidebar pairs the **color combo** (below) — standing in for the background half, the narrow context the combo was built for — with the picker's own well and popover-hosted grid, fed `CuratedSymbols`' card-level set, so this component now has exactly one anchor left, the Style… popover, which alone carries both grids in full. (The board popover was briefly a third anchor — the background half embedded in its Theme tab — until the 2026-08-07 Theme rework made that tab preset-only; Style… with nothing selected is the board's manual grid now, and the popover's symbol picker beside the rename field still owns the board glyph — the same `SymbolPicker` the card sidebar now uses.)
 
 - **Curated-first, panel-backed** (re-ratified 2026-08-06, reversing 2026-07-29's palette-only ruling): the background grid offers the 12 palette colors — every one AA-verified through one code path (ratified 2026-07-29: palette names route through the same runtime ink-selection seam as hand-written hex — the appearance flip picks the readable label vocabulary — and PaletteContrastTests pins that the chosen ink meets AA in both appearances for all 12 backgrounds, so palette drift can never silently break it) — plus a leading **None** well that removes the `background` key. Beside the grid the vocabulary now has a second, compact form: the **color combo** — a swatch-faced popup listing None, the role's twelve, the current off-palette value verbatim when there is one, and **Other…**, which opens the system Colors panel. The panel is the in-app escape hatch the 2026-07-29 ruling withheld: a pick landing exactly on a palette color stores the *name* (so a re-pick never drifts to a hex spelling), anything else stores the hex — the same unlimited vocabulary hand-editing always had, now pickable. An arbitrary pick changes no contrast story (it lands on the identical runtime ink computation hand-written hex already gets — 10-accessibility.md), and the quick-style recents stay palette-vocabulary: a panel pick never enters them.
-- **Curated symbol grid**: a hand-picked set (roughly five dozen kanban-relevant SF Symbols); its leading well is the level's default symbol and removes the `icon` key. Any other SF Symbol name works written by hand — named symbols the running OS knows, that is: inventories grow per macOS release, so a newer-OS name renders the level default on an older Mac, value preserved on disk — the palette stance again. No full-browser escape hatch in-app; the raw file is the escape hatch. (Symbols keep this stance deliberately — the 2026-08-06 color-panel reversal above is colors only: the system offers a Colors panel worth deferring to, and no symbol browser of equal standing.)
+- **Curated symbol grid**: three hand-picked, level-specific sets (~30–40 SF Symbols each, one for boards, one for lanes, one for cards — split 2026-08-09 from an original single ~65-entry list); the grid draws from whichever set matches the target's level, or the three combined for a target spanning more than one (unreachable today under 04-interactions.md's cards-XOR-lanes rule, kept as a real fallback rather than an assumption). Its leading well is the level's default symbol and removes the `icon` key. Any other SF Symbol name works written by hand — named symbols the running OS knows, that is: inventories grow per macOS release, so a newer-OS name renders the level default on an older Mac, value preserved on disk — the palette stance again. No full-browser escape hatch in-app; the raw file is the escape hatch. (Symbols keep this stance deliberately — the 2026-08-06 color-panel reversal above is colors only: the system offers a Colors panel worth deferring to, and no symbol browser of equal standing.)
 - **Off-palette values display leniently**: a hand-written hex background or uncurated symbol shows as the current value in the editor (labeled verbatim, outside the grids); choosing any well replaces it.
 - **Batch edits**: a multi-selection shows per-dimension mixed state (no well selected, "—" where a value would read); choosing a well applies to the whole selection — one gesture, one commit on git boards.
 - **The Style… popover tracks its target set live and dismisses when it empties** (settled): its target is the selection, re-resolved across reloads by 02-architecture.md's UUID rule — a member that vanishes or flips liveness leaves the set and the mixed-state display recomputes; a set emptied by a foreign reload dismisses the popover (the inline-rename discard applied here) — it never silently retargets to the board, and nothing writes into a vanished folder (a member moved to the trash leaves the set like any other departure). **The read-only lock instead disables its wells in place** (settled): a popover open when the lock lands stays open, content disabled — the banner names why, and the lock never yanks a surface (the Edit buffer's keeps-its-place posture). The embedded anchors need no rule of their own: the card sidebar dismisses with its card's window, and the board popover's target is the board itself.

DESIGN/05-card-window.md

@@ -63,7 +63,7 @@ Stacked sections under small-caps headers, in this order; quiet rows, read-optim
 
 ### Style
 
-The card-level styling home: the **Background color combo** over the compact **`SymbolPicker`** (03-board-ui.md ▸ Styling ▸ Controls, its 2026-08-06 anchor-ownership rule for the background half, extended to the symbol half on 2026-08-08) — the sidebar is exactly the narrow context the combo was built for, so it stands in for the style editor's background half here, panel escape hatch included, while the picker's own well and popover-hosted grid — fed `CuratedSymbols`, not the picker's smaller general-purpose default, so a card's curated vocabulary doesn't shrink — stands in for the symbol half the same way; the full style editor's grid remains the surface only at Style…. Card styling is discoverable here without a context menu; the picker is the same reusable control the board popover's glyph picker beside the rename field uses.
+The card-level styling home: the **Background color combo** over the compact **`SymbolPicker`** (03-board-ui.md ▸ Styling ▸ Controls, its 2026-08-06 anchor-ownership rule for the background half, extended to the symbol half on 2026-08-08) — the sidebar is exactly the narrow context the combo was built for, so it stands in for the style editor's background half here, panel escape hatch included, while the picker's own well and popover-hosted grid — fed `CuratedSymbols`' card-level set (one of three level-specific sets, 2026-08-09), not the picker's smaller general-purpose default, so a card's curated vocabulary doesn't shrink — stands in for the symbol half the same way; the full style editor's grid remains the surface only at Style…. Card styling is discoverable here without a context menu; the picker is the same reusable control the board popover's glyph picker beside the rename field uses.
 
 ### Details — unknown frontmatter keys