The strip grows a Sync tab — a standing placeholder, nothing in it yet

BoardInfoTab gains .sync last in the strip, rendering BoardSyncTabView's one
honest caption. The tab claims the position where 07's remote half will
live without ruling where its setup surfaces land — that stays the open
Redesign card's question.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

DESIGN/03-board-ui.md

@@ -53,7 +53,7 @@ One **style editor** component — a background palette grid and a curated symbo
 
 ## Board popover
 
-**The tabbed popover (2026-08-07, restructure complete — all three tab sessions settled).** The symbol/name header stays at the top — the board's glyph with its tint row beside the rename field; below it sit tabs — **Info**, **Theme**, **Git** — each the settings surface for one aspect of board configuration, each settled in its own dedicated session. **Tab membership is the git posture's** (the Git session's ruling): the Git tab joins the strip only when the git section has something true to say — `BoardGitSection` resolves to anything but absent — so a free-tier board with no `.git` shows Info | Theme alone. This carries 12-editions.md's "absent, no placeholder" rule up to the tab strip: a standing Git tab on every free board would be the standing ad for Pro that 12 forbids. *(Pivot 2026-08-07, same day — 12: git left the paywall, so the absent posture is unreachable and every board carries all three tabs. The membership rule stands structurally — the strip still asks the posture — it just never hears "absent" anymore.)* **Selection resets to Info on every open** (ruled in the Git session, closing the question the earlier tab sessions deferred): the popover is transient and Info is the board's face — and a remembered tab could strand selection on a tab the next posture doesn't offer.
+**The tabbed popover (2026-08-07, restructure complete — all three tab sessions settled).** The symbol/name header stays at the top — the board's glyph with its tint row beside the rename field; below it sit tabs — **Info**, **Theme**, **Git** — each the settings surface for one aspect of board configuration, each settled in its own dedicated session. **Tab membership is the git posture's** (the Git session's ruling): the Git tab joins the strip only when the git section has something true to say — `BoardGitSection` resolves to anything but absent — so a free-tier board with no `.git` shows Info | Theme alone. This carries 12-editions.md's "absent, no placeholder" rule up to the tab strip: a standing Git tab on every free board would be the standing ad for Pro that 12 forbids. *(Pivot 2026-08-07, same day — 12: git left the paywall, so the absent posture is unreachable and every board carries all three tabs. The membership rule stands structurally — the strip still asks the posture — it just never hears "absent" anymore.)* **Selection resets to Info on every open** (ruled in the Git session, closing the question the earlier tab sessions deferred): the popover is transient and Info is the board's face — and a remembered tab could strand selection on a tab the next posture doesn't offer. *(Added 2026-08-07, the same night the settings sheet retired: a fourth tab, **Sync** — a standing placeholder, last in the strip, rendering one honest "Nothing here yet." caption. It claims the position where the remote half of the git story will live — tracking, Pull/Push, the badges, and whatever home 07-sync-collab.md's setup surfaces are ruled into — without ruling any of that: the open Redesign card owns the question, and the placeholder is deliberately empty rather than a greyed-out preview.)*
 
 **The Theme tab** (settled 2026-08-07, its dedicated session; reworked same day from the first "Background" cut — the style-editor embed was in, then ruled out): a **preset-only** surface — no palette grid, no "Board" subtitle, no manual controls (the manual surface is Style… with nothing selected; the raw file remains the image escape hatch). One **Solid color / Pattern** segmented choice at the top, then the filters that apply to the chosen kind, then one carousel of the eight wheel hues with tall skinny chevrons flanking it (compact-chevron paging buttons, ~three swatches per press, each disabling at its end of the strip). **Solid color** shows Tone (defaults to the current appearance) and Saturation only; the carousel holds flat swatches — each hue at the selected tonality's base saturation and lightness, exactly the primary color the matching facets recipe would write — and clicking one sets `background.color` and *removes* `background.image` in one write (the generated PNG stays on disk so undo can restore the field that pointed at it). **Pattern** is the faceted-background picker (DESIGN/explorations/board-backgrounds.md ▸ Faceted gallery, the reviewed recipe): four filters — Tone and Saturation shared with Solid, plus Colors mono/duo/trio and Mesh coarse/medium/fine — over rendered previews, one seed per hue, plus a Reroll button that re-mints the seeds (filters change the treatment, Reroll the geometry; preview and file share a seed, so what's clicked is what lands). Clicking a pattern swatch renders the recipe at the 3072 px decode ceiling off-main and lands it in one write: the PNG into the board root as `facets.png` (Finder-ladder rename only when a foreign file owns the name), `background.image` pointed at it, and `background.color` set to the recipe's primary color — the underlay that stands in while the image decodes or if the file ever goes missing. The mode opens on whichever kind the board currently wears (Pattern when `background.image` is the generated file, Solid otherwise). **Backgrounds ship as static pixels, never live-rendered views** (the perf/sync ruling, 2026-08-07): the generator runs at pick time, the render loop only ever composites a decoded bitmap. Native undo restores the two fields, not overwritten bytes — regenerating over our own PNG is destructive, documented, and accepted. The whole tab disables under the read-only lock as one surface.