add a living todo for the workspace/panel framework

the framework has no tests, no error boundaries and a handful of known
defects that keep resurfacing mid-feature. write them down once, ranked,
so they can be picked off in the context of whatever is being built.

notable: the dashboards PATCH dispatcher silently drops any key family it
has no branch for, and three in use today (tmux, nvim, claude-code, all
from Terminal's statePrefix) match nothing — so that state never persists.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
2026-08-07 02:58:16 +00:00
co-authored by Claude Opus 5
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behind nginx, `tailnet` is not a headscale concept and has to be recorded on the invite, and behind nginx, `tailnet` is not a headscale concept and has to be recorded on the invite, and
`/api/v1/enroll/*` collides with headscale's own namespace. `/api/v1/enroll/*` collides with headscale's own namespace.
## Workspaces & Panels
Its own list — **`docs/workspace-panel-todo.md`** — because it is long and actively worked. Full
analysis behind it: `COMMS/workspace-panel-framework-analysis-2026-08-07.md`.
Headlines: the framework has **no panel lifecycle** (a panel can be destroyed but never told, which is
the real cause of the terminal orphan leak); three state-key families are **silently dropped on every
write**, orphaning a pty per reload; Running Shells has **404'd since 2026-07-31**; there are **zero
error boundaries** anywhere in the repo; and `dashboards.id` is a **global** primary key fed by
`slugify(name)`, so two members naming a dashboard the same thing collide.
## Known bugs ## Known bugs
- [ ] **`bootstrap.ts` runs `npm install -g` for Pi on every boot.** `findPiPackageDir` checks stale - [ ] **`bootstrap.ts` runs `npm install -g` for Pi on every boot.** `findPiPackageDir` checks stale
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# Workspaces & Panels — working TODO
Living list. Add items as they are found, tick them as they land, and write the resolution *into* the
item rather than deleting it — the reason a thing was done is worth more later than a clean list.
Move anything fully settled to §7.
Findings and full reasoning: `COMMS/workspace-panel-framework-analysis-2026-08-07.md`. Every `file:line`
below was opened; DB claims were run against live `officer_dev`. Paths are relative to
`platform/src/workspaces/officerdev/src/` unless they start with `servers/`, `databases/` or `sidecars/`.
**Framework core:** `components/Workspace/` — 12 files, 1,533 lines. No tests exist for any of it.
**Two open decisions gate real work — see §6.** Don't start item 4.1 or 5.3 before those are answered.
---
## 1. Observability first — do these before anything else
Both are two-line fixes, and without them you cannot tell whether any later fix worked.
- [ ] **Fix the Running Shells paths — the panel has 404'd since 2026-07-31.**
`apps/Terminal/RunningShells.tsx:43,49` call `/terminal/sessions` and
`DELETE /terminal/sessions/:id`. `useClient` prefixes `/api`; `servers/sidecar/create-proxy.ts:69`
strips the mount prefix, so the sidecar receives `/sessions`. The pty sidecar serves only
`/_officer/sessions` (`sidecars/pty/server.mjs:30`) and `/_officer/sessions/:id` (`:34`) —
everything else 404s at `:40`. Correct paths: `/terminal/_officer/sessions` and
`/terminal/_officer/sessions/:id`. The panel (`fccf212`) predates the proxy move (`7129cd8`) that
deleted the old `servers/api/terminal/router.ts` and was never updated.
Symptom today: permanently reads "No shells running", kill button is a silent no-op.
- [ ] **Surface the `clients` count in Running Shells.** `RunningShells.tsx:12-20` drops the `clients`
field the sidecar returns (`sidecars/pty/sessions.mjs:169`) — the one field that distinguishes an
orphan (`clients: 0`) from a live shell. Add it to the type and render it.
- [ ] **Stop swallowing persist failures.** `state/src/useDashboardState.ts:46` is
`.catch(() => { })`. Every 500 in this document is invisible because of it — the optimistic cache
keeps the UI correct until reload. At minimum log; better, surface a toast and roll the cache back.
---
## 2. Live data loss
- [ ] **The PATCH dispatcher silently drops three key families in active use.**
`servers/api/dashboards/dashboards.ts:26-88` is a chain of `if (match) { …; continue; }` that ends
with **no `else`** — unmatched keys are dropped and the request returns 200 with a fresh state blob.
Matched: `workspaces`, `ws-layout-*`, `ws-terminals-*`, `ws-host-terminals-*`, `screens/*`.
`apps/Terminal/CommandTerminalWrapper.tsx:18` writes `ws-${statePrefix}-${dashboardId}`, and the
registered prefixes (`apps/Terminal/index.tsx:22,27,34`) are **`tmux`, `nvim`, `claude-code`**.
So the panel→session map for those three survives only in the React Query cache, for the life of
the tab. **Every reload mints a fresh uuid and abandons the previous pty** — alive, unreachable,
never killed. (Tmux's own state survives via `new-session -A -s off-<panelId>`; the shell running
`tmux attach` does not.)
Two parts: add the three families, **and** add a fallback `else` that 400s on an unknown key.
- [ ] **`ws-terminals-{id}: null` on a live dashboard is a 500.** Same file, `:61-66` — the
`ws-layout-*` branch has a `value === null``deleteDashboard` case (`:42`); the terminals
branches do not. A null falls to the UPDATE branch and sets a `NOT NULL` column
(`databases/officer_db/src/queries/dashboards.ts:70`) → 23502.
- [ ] **Renaming a dashboard resurrects it as a zombie row.**
`apps/Dashboards/DashboardPreview.tsx:316-318` PATCHes `ws-layout-old: null` *and*
`ws-terminals-old: null` together. The first deletes the row; the second then calls
`upsertDashboard`, finds nothing, and **re-INSERTs it** with `name = id`. The old slug reappears in
`workspaces` on the next GET as a duplicate. Fixed by the item above, but verify this specific
sequence after fixing.
---
## 3. Multi-user correctness — before another member creates a dashboard
`dashboards` is **empty (0 rows)** today, so none of this has fired yet. Members can now sign in
(`d8ee678`), so it is a matter of time. Note `TODO.md`'s preamble still says the platform is collapsing
to single-user — that predates the capability permission model and should not be used to deprioritise
these.
- [ ] **`dashboards.id` is a global primary key but ids are `slugify(name)`.**
`databases/officer_db/src/schema/dashboards.ts` declares `id: text('id').primaryKey()`. Live:
`"dashboards_pkey" PRIMARY KEY, btree (id)` plus a redundant
`"uq_dashboards_user_id" UNIQUE, btree (user_id, id)` — evidence per-user ids were intended and
half-built. Ids come from `DashboardPreview.tsx:300` (`slugify(trimmed) || generateSlug()`) and the
uniqueness loop at `:340` checks **only the caller's own dashboards**. Two users both naming a
dashboard "Work" → both get `id = 'work'` → the second violates the PK → 500 → swallowed → the
dashboard shows, then vanishes on reload.
Fix: composite PK `(user_id, id)`, or uuid ids. Composite PKs have a known drizzle re-diff quirk
(see `databases/CLAUDE.md` → "Composite keys") — harmless churn, but read the plan.
- [ ] **`upsertDashboard`'s UPDATE has no `userId` predicate.**
`databases/officer_db/src/queries/dashboards.ts:73`
`db.update(dashboards).set(set).where(eq(dashboards.id, id))`. The `existing` lookup above it *is*
scoped, so it cannot reach another user's row today, but it is a non-transactional read-then-write.
**It becomes a live cross-user overwrite the moment the PK above is made composite.**
Do both in one change or the first fix opens the second.
---
## 4. Resilience — one bad row is currently a white screen
- [ ] **Add an error boundary.** `grep -rln "componentDidCatch\|getDerivedStateFromError\|ErrorBoundary\|errorElement" src` returns **nothing**
across the whole repo. Wrap `WorkspaceRenderer` at minimum, with a reset that offers "restore
default layout". Today the only recovery from a malformed stored layout is SQL.
- [ ] **Validate on read.** `useDashboardState.ts:36` is `key in state ? state[key] as T : defaultValue`
— an unchecked cast over a value that arrived as `unknown` from jsonb. Add an `isLayoutNode()`
guard that falls back to `defaultValue`.
This also neutralises the next item without a migration.
- [ ] **`layout` columns default to `'[]'`, which is not a valid `LayoutNode`.**
`schema/dashboards.ts:13,31` — an empty **array** for a column holding an object. Any path that
upserts without a layout (e.g. the `workspaces` branch, `dashboards.ts:33`) writes it; `key in
state` is then true, so the stored `[]` wins over the caller's default and `normalizeLayout` calls
`.children.map` on it and throws. Change the default, or drop it and make the column nullable.
- [ ] **Validate on write.** The whole path is `unknown`: `useDashboardState.ts:46`
`servers/api/dashboards/dashboards.ts:45,83``queries/dashboards.ts:51,97` → cast `as never` at
`:114` to satisfy drizzle → jsonb. No zod, no CHECK on any of the three layout columns. Given
`databases/CLAUDE.md`'s stance that the schema is the source of truth for *contents*, a CHECK on
`jsonb_typeof(layout) = 'object'` is the cheap half.
- [ ] **A bare number is squatting in a framework namespace.** *(verified in the live DB)*
`apps/Soulseek/shared.ts:12` builds `screens/soulseek-zoom/${panelId}` and passes it to
`useDashboardState<number>`. The server routes `^screens/(.+)$` into `screens.layout`, so:
`user_id 1 | soulseek-zoom/soulseek-view | jsonb_typeof = number`. That namespace belongs to
layouts. Give per-panel scalar prefs their own key family (and a matching dispatcher branch, which
the §2 `else` will otherwise start rejecting).
---
## 5. The framework work proper
### 5.1 Give panels a lifecycle — the highest-value change here
- [ ] **`onClose` on `AppRegistryEntry`, invoked by the mutators, not by unmount.**
`components/Workspace/types.ts:38-47` has no close hook; the only `onClose` is
`PanelComponentEntry.onClose` (`:55`), which is a header-button handler for *ephemeral* panels and
is suppressed on mobile (`PanelSlot.tsx:382`). So the two ways a panel dies —
`removePanel(root, id)` and `setApp(root, id, null)` (the red traffic light, `PanelSlot.tsx:295`)
— are pure tree rewrites that notify nobody.
**Invoke it from `WorkspaceView`'s `handleRemove`/`handleSetApp`, never from a `PanelSlot`
unmount** — a `PanelSlot` unmount is precisely the ambiguous signal this exists to replace.
Implementation: diff removed panel ids old-tree new-tree, or have the mutators return them.
This is the thing `apps/Terminal/TerminalWrapper.tsx:31-38` asks for in writing: *"Killing on
unmount is not an option until the panel system can tell a real close from an incidental
remount."* It closes the terminal orphan leak as a consequence rather than as a special case, and
the same gap affects every panel holding a server-side resource.
- [ ] **Then: kill the pty on real close.** Once the hook exists, `TerminalWrapper` /
`CommandTerminalWrapper` / `HostTerminalWrapper` can `DELETE /terminal/_officer/sessions/:id` and
drop the map entry — the thing they each explain they cannot currently do.
- [ ] **Then: reap orphans in the sidecar as a backstop.** `sidecars/pty/sessions.mjs:127-130`
`detach()` never checks `clients.size === 0`; there is no idle timeout and no session cap.
`lastActivityAt` is written (`:110`) and displayed (`:167`) but never read by a timer. Each orphan
costs a `SHELL -i` with the owner's full env plus up to `BUFFER_MAX = 512 KiB` (`:10`) — bounded
per session, unbounded in aggregate.
*Note: `sidecars/` is platform, so in scope — but confirm before touching the pty protocol.*
### 5.2 Stop the avoidable remounts
A panel's React identity is its position plus `key={child.node.id}` on its **nearest ancestor group
slot** (`WorkspaceRenderer.tsx:178,204`) — the panel's own id is a key nowhere. That's the root cause of
the whole table:
| operation | remounts? | why |
|---|---|---|
| split, direction **matches** parent | no | `layout-utils.ts:34-44` splices children through by reference |
| split, direction **differs** / leaf | **yes** | `:20-30` wraps in a new group with a fresh `uid()` |
| split the root when root is one panel | **yes, everything** | `WorkspaceRenderer.tsx:40` renders one *unkeyed* child whose type changes |
| remove from a 2-child group | **yes — the survivor** | `:68-70` collapses the group, re-keying the sibling |
| swap | apps remount | `setApp` twice; the component *type* at each slot changes |
| resize / maximize | no | ids preserved; maximize is a CSS toggle |
| mobile panel switch | yes, by design | only the active child renders |
| **any ephemeral panel on mobile** | **yes — every panel** | `WorkspaceView.tsx:165` replaces the workspace instead of overlaying |
| **viewport crossing 768px** | **yes, full** | `useIsMobile` flips the branch at `WorkspaceView.tsx:165` |
- [ ] **Reuse the panel's id when wrapping it in a new group**, so the ancestor slot key doesn't flip.
Kills rows 2 and 3.
- [ ] **Don't re-key the survivor when a group collapses** (`layout-utils.ts:68-70, 83-88`). Kills row 4.
- [ ] **Overlay the mobile ephemeral panel instead of replacing the workspace**
(`WorkspaceView.tsx:165`). Affects `/files`, `/email`, `/chat`, `/browser`, `/dashboards`.
- [ ] **Reference for how it should feel:** maximize (`PanelSlot.tsx:430-457`) is a CSS state toggle on
the same element — no portal, no remount, scroll position and media playback preserved. Every
mutator should be held to that.
### 5.3 Drag-to-move: finish it or delete it
- [ ] **Decide, then act — do not patch it.** `dragSourceId` can never become non-null: the only code
that would set it is commented out at `PanelSlot.tsx:240-256`. So the whole path is dead:
`DragOverlay.tsx` (99 lines, imported by nothing), `LayoutEditor.tsx` (51, imported by nothing),
`movePanel` + `insertPanel` + `DropPosition` (`layout-utils.ts:142-169`), and three context fields.
~180 lines.
**If finishing it:** `movePanel` currently mints a *brand-new* panel id (`:151-154`) and carries
only `appType`, so it destroys all panel-keyed state and **silently drops `fitContent`**. Fix both
before re-enabling.
### 5.4 Make `normalizeLayout` framework, not convention
- [ ] **One `makeLayoutNormalizer(allowed, fallback)` applied inside `WorkspaceView`.**
The guard currently exists **14 times, character-identical except for the allow-list and the
fallback**, plus a matching `useMemo`/persist-back `useEffect` pair 13 times — ~150 duplicated
lines. Consequences of it being convention:
- **10 `WorkspaceView` consumers have no guard at all**, including `screens/HomeScreen.tsx:11`,
which also omits `locked` — the one screen where a user can set any registry appType with
nothing pinning it back.
- Allow-lists are hand-written literals, never derived from the AppRegistry. They catch a
*renamed* appType; they do **not** catch one still allow-listed but deleted from the registry —
that passes and reaches `PanelSlot.tsx:311-317`, which on a `locked` screen renders an empty
teal-bordered box with no picker and no way for the user to recover.
- `screens/QrTransferScreen.tsx:19-39` has the guard but no persist-back, so it re-normalises on
every mount forever and never heals the row.
- [ ] **Then collapse the three default-layout mechanisms**: per-screen `defaultLayout.ts` (×20),
`createDefaultLayout()` in the core, and the 6-entry template array at `DashboardPreview.tsx:33-142`.
### 5.5 Persistence hygiene
- [ ] **The resize debounce can resurrect a deleted panel.** `WorkspaceRenderer.tsx:108-124` holds a
500 ms timer in a ref with **no `useEffect`, therefore no cleanup**, and its callback closes over
the layout as it was when the drag began. Drag a splitter, remove a panel within 500 ms → the timer
PATCHes the pre-deletion tree and the panel comes back. Same shape for a split.
Fix: clean up on unmount, and make `setValue` accept an updater so it composes against current
state instead of a captured one.
- [ ] **Concurrent same-key writes clobber.** A window resize fires `onLayout` on every group at once;
each schedules its own timer against the same base tree and the last wins
(`WorkspaceView.tsx:76-81`). Same fix as above.
- [ ] **The cache is never invalidated.** `staleTime: Infinity` and no `invalidateQueries` anywhere in
the repo. Meanwhile every PATCH already computes and returns a full fresh state blob
(`servers/api/dashboards/dashboards.ts:90`) which the client **discards** — 3 SELECTs per splitter
release, thrown away. Consume the response, or stop computing it. Two tabs currently diverge
permanently and neither is told.
- [ ] **Preserve sibling sizes on split.** `splitInner`/`insertPanel` redistribute evenly
(`100 / newChildren.length`), so one split discards carefully tuned proportions.
- [ ] **`tpl-N` panel ids collide across dashboards.** `DashboardPreview.tsx:25-26`
`let tplCounter = 0; const tplUid = () => \`tpl-${++tplCounter}\`` — module-level, no entropy,
resets every page load. Two dashboards created from templates after a reload hold panels with
**identical ids**, and panel id keys `terminal-conn-${panelId}` and `file-viewer:${panelId}`.
Use the core's `uid()` (`layout-utils.ts:4`), which stamps `p-${Date.now()}-${n}`. One line.
### 5.6 Registry
- [ ] **No duplicate-key guard.** `metasToRegistry` is `Object.fromEntries`
(`state/src/useAppRegistry.ts:19`) — a collision silently last-wins and one app just disappears.
All 44 keys are unique today. Throw in dev.
- [ ] **Seeding depends on undocumented mount ordering.** Three call sites call `useAppRegistry()` with
no argument, defaulting to `[]`. It works only because `<AppRegistry />` sits at `frontend.tsx:32`,
above `<App />` at `:34`. Mount a `WorkspaceView` above that and every panel renders empty.
- [ ] **`officerdev/file-viewer` is a dead registration.** Its provider reads
`usePanelChannel('file-viewer:' + panelId)` and **nothing in the repo writes that channel**. Also
`availableOnPanel: false`, so it can't be picked. If it ever appeared in a layout it would say
"No file selected" forever.
- [ ] **`dashboard-list` is pickable in every panel on every dashboard.** `apps/Dashboards/index.ts:12-16`
omits `availableOnPanel` while its sibling `dashboard-preview` sets `false`. Almost certainly
unintended — the flag is opt-*out*, and 12 of 44 metas omit it. Consider making it opt-*in*.
### 5.7 Effect hygiene in panel apps
All the same bug: an app guessing "am I being closed?" from an unmount, or paying for a remount from 5.2.
- [ ] **PARKED — `useClient` identity / `DesktopView` deps.** Revisit later, not now.
`useClient` returns a fresh object every render (`workspaces/hooks/src/useClient.ts:30-38`), but
it is consumed by calling verbs at call time, which is identity-agnostic. **Do not memoize it.**
Only two dep-array sites exist: `apps/Desktop/DesktopView.tsx:205` (one redundant connect at
mount — React bails on the unchanged `setStatus`, so it settles rather than looping) and
`hooks/useChat.ts:124` (a `useCallback`, harmless). Owner has used this pattern for years without
issue; my first write-up called it a live bug and that was overstated.
- [ ] **`DictateDialog` never releases the microphone.**
`apps/FileBrowser/FileBrowserApp/components/DictateDialog.tsx:142-149` —
`return () => { if (!showDictate) cleanup(); }`. The cleanup that runs on `true → false` is the one
registered by the `true` render, where `showDictate` is `true`, so it never fires. Mic stream,
`AudioContext` and the rAF loop leak. `apps/QrTransfer/Receiver.tsx:120` is the correct version.
- [ ] **`useAudioRecording` has no unmount cleanup at all** (`apps/Chat/useAudioRecording.ts` — no
`useEffect`). Unmounting Chat mid-recording leaves the mic open for the life of the tab.
- [ ] **`HostTerminalWrapper` still has the cleanup the other two deliberately removed.**
`apps/Terminal/HostTerminalWrapper.tsx:28-35` deletes the panel→session mapping from persisted
state on *any* unmount — exactly what `TerminalWrapper.tsx:30-38` and
`CommandTerminalWrapper.tsx:31-32` document removing, and why. Latent only because
`officerdev/terminal-host` is in no default layout and hidden from the picker
(`apps/Terminal/index.tsx:51`).
- [ ] **`useTaskRunner` abandons the running task.** `:60-63` is a bare `ws.close()`. A `stop` message
exists at `:76-79` and is never sent, and there is no re-attach path — unlike `usePipelineRunner`,
which re-attaches by `jobId` (`:281-283`).
- [ ] **`VideoPlayer` kills the transcode on incidental unmount.** `apps/Jellyfin/VideoPlayer.tsx:217-223`
POSTs `stopped`, killing server-side ffmpeg, then renegotiates. Fires on every "yes" row in 5.2.
Also: the comment at `:215-216` says the dep list "must stay empty" while the code passes
`[sendReport]` — harmless today, misleading.
- [ ] **Two stale-closure sockets.** `usePipelineRunner.ts:270-301` (deps `[]` but calls a `useCallback`
that changes identity — keeps the first-render copy forever) and
`apps/FileBrowser/AudioStreamPlayer.tsx:70-143` (safe today, latent).
- [ ] **`PanelSlot` defines a component inside render.** `:341-348` — `DefaultHeader` is a new component
*type* every render, so the header subtree remounts constantly. Harmless while stateless; a trap
the moment it isn't.
- [ ] **The context value is a fresh literal.** `WorkspaceView.tsx:145-163` — every `useWorkspace()`
consumer in every panel re-renders on every `WorkspaceView` render, including each maximize
animation frame. Multiplies the cost of the `DesktopView` bug.
### 5.8 Navigation — finish the refactor
- [ ] **Move the seven channel-driven apps' selection into the URL.** Split today: 11 URL-driven
(everything post-refactor), 7 channel-driven, 3 on bare `useState`. The channel-driven set: Music
(`music:cwd`), Soulseek sections, SystemMonitor (`monitor:scope`), Chat detail
(`chat:selected-session`), Email, Browser, and all five Settings pages (one fix point,
`SettingsPanel.tsx:56`).
**This is chronological, not architectural** — panels render as ordinary children of the screen's
Route element (`PanelSlot.tsx:333`), so every one of them can call `useParams` today. Nothing in
the framework needs to change.
Symptom: `/soulseek` reopens in your last section and `/music` at your last album while the URL
says the bare route. `usePanelChannel` is a slot on **one process-global QueryClient**
(`frontend.tsx:15-21`) with no per-route scoping, and `reset` is called nowhere.
Authority: `docs/navigation-audit.md`.
---
## 6. Decisions needed — not defects, don't guess
- [ ] **Mobile: thread `mobilePanelId` everywhere, or delete the collapse?**
`WorkspaceRenderer.tsx:143-165` collapses any horizontal group with >1 child to a single child,
choosing `mobilePanelId` or falling back to `children[0]`. **Only 4 of 23 consumers pass it.** So
`/wallet`, `/music`, `/calendar`, `/contacts`, `/soulseek`, `/system-monitor`, `/headscale`,
`/gitea`, `/photos`, `/invoices`, `/jellyfin`, `/transmission` render **the nav sidebar only** —
content permanently unreachable, no tab bar, no indicator, no affordance. User-created dashboards
(`screens/DashboardScreen.tsx:22`) show only their left column, forever.
Deleting the collapse *repairs* 16 screens (cramped but complete) at the cost of the 4 using it
correctly. Threading it everywhere is 19 small edits and a design question about how you switch.
Also note the collapse only applies to **horizontal** groups.
- [ ] **The known "invisible edit form on mobile" bug is a sub-case of the above.** It is a mutual
exclusion, not a layout glitch: the edit pencil is reachable only while `selected === null`, and
the form renders only while `selected !== null`. **Commit `4970e7e` could not have fixed it** —
its change is a no-op on mobile. Recorded as deliberately-unfixed in `CLAUDE.md` pending the
native app; worth re-deciding now that the cause is known.
- [ ] **Drag-to-move: finish or delete?** See 5.3. ~180 lines of dead code with a known defect in it.
---
## 7. Landed
*(move items here with the commit and a one-line resolution)*
---
## 8. Dead code sweep
Low priority, but each line here is a line someone will read and believe.
- [ ] `DragOverlay.tsx` (99) + `LayoutEditor.tsx` (51) — imported by nothing. Gated on 5.3.
- [ ] `WorkspaceLayout`'s `isMobile`/`mobilePanelId`/`onMobileBack` props — no caller passes them.
- [ ] `fixedHeight` on `AppRegistryEntry` — declared, read at `WorkspaceRenderer.tsx:76`, set by **zero**
metas.
- [ ] `registerApp` (`useAppRegistry`) — zero callers.
- [ ] `getDefaults` (`queries/dashboards.ts:136`) — zero callers.
- [ ] `screens.terminals` / `screens.hostTerminals` columns — never written, never read.
- [ ] `SELECTED_DASHBOARD` constant — zero consumers.
- [ ] `preview:refresh` and `chat:active-session` channels — written by `ChatPanelWrapper.tsx:58-59`,
**read by nobody**. Note `preview:refresh` is the exemplar `docs/navigation-audit.md:126` cites as
the canonical *good* channel; fix the doc too.
- [ ] `components/ui/hooks/use-mobile.tsx` + `ui/sidebar.tsx` (~720 lines) — a second `useIsMobile`
implementation, and a sidebar imported by nothing.
- [ ] `WorkspaceRenderer.tsx:84` — unreachable duplicate condition inside `findChildById`. While there:
the doc comment says "find a panel node by id anywhere in the tree", but it returns *the direct
child whose subtree contains the id*, which is what the mobile collapse needs. **The behaviour is
right and the description is wrong** — fix the comment, not the code.
---
## 9. Tests
- [ ] **There are none.** No `*.test.*` exists under any `Workspace*` or `*Screen*` path. `layout-utils.ts`
is 214 lines of pure functions over a serialisable tree — the cheapest high-value test target in
the codebase, and every item in 5.2 and 5.5 is a regression test waiting to be written. Start here
before the mutator work, not after.