feat: mute CRDT sync chrome and move bold onto ⌘B

[chasehuh]

PR-A of #77. Two small, independently reviewable locks: the Offline indicator stops looking like a hard error, and ⌘B becomes bold.

Offline chrome

.zed-save-error paints a red bordered alert box. On the CRDT path that fires for a transient WebSocket reconnect — a state where nothing is wrong, because the edit is already durable in IndexedDB and will flush. That is alarm fatigue for a non-event.

New crdtSyncChrome() (lib/crdt/sync-chrome.ts) maps transport status to a muted .zed-titlebar__sync mark placed to the left of Publish: no border, no fill, var(--c-text-muted), role="status" rather than role="alert". Copy and tooltip are unchanged ("Offline" / saved on this device), and Retry is offered only where a manual flush means something.

Path	Status	Element	Look
CRDT	loading / syncing	.zed-titlebar__sync	muted "Syncing…"
CRDT	offline	.zed-titlebar__sync	muted "Offline" + Retry
CRDT	synced	—	nothing
Legacy	auth / conflict / generic	.zed-save-error	unchanged red

The red block is now gated on !CRDT_ENABLED — real failures on the legacy whole-document path keep their strong chrome, deliberately.

This also closes the #75 residual. loading and syncing both used to collapse into "saved", so a note still waiting on the WebSocket read "Saved" while it was actually read-only and unconfirmed. They now read "Syncing…".

⌘B bold / ⌘⇧B sidebar

⌘B / Ctrl+B toggles **bold** — wrap a selection, unwrap when the markers are inside or just outside it, and on an empty caret insert **** with the caret centered. One input history event, so ⌘Z undoes it in a single step. It is a plain view.dispatch, so yCollab carries it into Y.Text on the CRDT path for free.

The sidebar moves to ⌘⇧B. Note the window-level keydown had to stop matching plain meta+b entirely rather than merely lose priority: it listens on window, and a CodeMirror keymap's preventDefault() does not stop propagation, so leaving it would have toggled the sidebar and bolded on every press. ⌘\ and ⌘N are untouched.

On macOS defaultKeymap binds emacs-style Ctrl-b to cursorCharLeft; our binding is Mod-b = Cmd there, so they do not collide. On Linux/Windows Mod-b = Ctrl-b, which defaultKeymap does not bind. Bound at Prec.high anyway, matching agentnoteStrikethroughKeymap.

Shared toggle helper

toggleStrikethrough's wrap/unwrap/caret logic moved to toggleInlineMark(view, mark) now that bold is a second real caller — an abstraction with two concrete users, not a speculative one. Strikethrough's behavior is unchanged by construction (same function, same constant), and it picks up the unit tests it never had: both marks run the same table.

Tests

pnpm vitest run — 259 passed (was 239; +20).

• lib/editor/toggle-mark.test.ts — wrap, unwrap-from-inside, unwrap-from-outside, empty-caret insert, multi-range, single-undo-step, round-trip, read-only refusal; run against both ** and ~~.
• lib/crdt/sync-chrome.test.ts — synced renders nothing; offline labels Offline + retry and keeps the "Saved on this device" copy; loading/syncing read "Syncing…" and never "Saved".

pnpm exec tsc --noEmit clean. pnpm build green.

pnpm lint reports 9 errors / 6 warnings — all pre-existing. Verified by running eslint against a clean checkout of main: byte-identical counts. They are react-hooks/refs and react-hooks/set-state-in-effect findings in agentnote-app.tsx, codemirror-editor.tsx, and publish-panel.tsx from a newer eslint-config-next. This PR adds none and fixes none (out of scope).

Manual QA

Run with NEXT_PUBLIC_AGENTNOTE_CRDT=1.

1. Select a word → ⌘B → **word**. ⌘B again → unwrapped. ⌘Z once → back in a single step.
2. Empty caret → ⌘B → **** with the caret between the pairs.
3. ⌘B with the sidebar open → sidebar does not toggle. ⌘⇧B toggles it. ⌘\ still toggles it. ⌘N still creates a note.
4. Bold on a CRDT note in two tabs → the markers converge.
5. Kill the collab WebSocket → titlebar shows muted gray Offline + Retry to the left of Publish, no red box. Keep typing — edits still apply. Reconnect → the mark clears.
6. Hard-reload before the socket connects → reads Syncing…, not "Saved".
7. NEXT_PUBLIC_AGENTNOTE_CRDT=0, two tabs, force a 409 → red zed-save-error still appears with Use server / Overwrite.
8. Empty state (no note open) → no sync mark (guarded on activeId, so the app does not sit on a permanent "Syncing…").

Refs #77. PR-B (wiki-style [[ links + tags) follows and depends on nothing here.

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
memo	Ready	Preview	Aug 5, 2026 4:33am