# Status — relay "worktree-autodetect"

## 🏁 FINISHED — the relay reached its finish line

All three legs are complete and committed on `feat/worktree-autodetect`. `npm run verify` is
green. No further leg was spawned; leg 3 was the last one by design.

Remaining human action: review the branch and merge it. Nothing is blocked.

## Post-relay review fix

A human review question after leg 3 ("do we have pragmatic reasonable and stable code?")
found one real gap, fixed in `79577e4`: `applyProjectWorkspaces` replaced the list but left
`selectedWorkspace` pointing at the old object, so a branch switched inside a worktree
outside PI WEB showed the new name in the list and the old one in the collapsed Workspaces
header and mobile context bar. Now re-pointed by id, and skipped entirely when metadata is
unchanged so a normal resume does not churn identity. Two tests added (9 total in
`workspaceController.test.ts`), each mutation-checked in both directions. `npm run verify`
green: 1842 passed, 2 skipped (1843 after the two follow-up fixes below).

The other two review nits were then fixed as well, after the human asked:

- `8f060d1` removed the unused `GitWorktreeInfo.locked` flag. The parser test still feeds a
  real `locked` porcelain line and asserts it is ignored, so the keep-locked-worktrees policy
  stays covered without a speculative field.
- `f8c3fdb` fixed what turned out to be a **correctness bug, not the cosmetic nit I first
  rated it**. The resume path and the plugin-facing app refresh call
  `refreshSelectedProjectTopology` independently, and the stale guards check machine and
  project but *not ordering* — so a slower earlier response landing last overwrote a newer
  list and a just-created worktree disappeared again. Reproduced with a scratch test before
  fixing. Now routed through `TrailingRefreshCoordinator` keyed by machine+project.

Note for anyone extending this: `TrailingRefreshCoordinator` does **not** collapse two
overlapping calls into one HTTP request. It runs the second as one trailing pass after the
first completes, so the newest response is always applied last. An assertion of
`toHaveBeenCalledOnce()` will hang against it.

## Current position

Every charter finish-line condition is satisfied:

1. ✅ **Prunable worktrees hidden** — `266f941`. `discoverGitWorktrees` parses `prunable`;
   `WorkspaceService` filters those worktrees out, while always keeping the project's own
   worktree so a project is never empty.
2. ✅ **Non-disruptive client refresh** — `d0f8f9f`.
   `WorkspaceController.refreshSelectedProjectTopology()` applies results through
   `applyProjectWorkspaces` only, never `selectWorkspace`, so selection, session, file tree,
   git status, and terminal selection survive. A vanished selected workspace is left alone
   for the existing deletion path to handle.
3. ✅ **Wired to the existing resume path** — `84545fb`. Called from
   `PiWebApp.refreshAfterBrowserResume` and `refreshAppData`. No new timer, watcher,
   process, endpoint, or push channel. Remote machines work through the existing
   `machinePrefix` + `FEDERATED_HTTP_ROUTES` plumbing.
4. ✅ **Tests** — prunable parsing/filtering (`gitWorktreeDiscovery.test.ts`,
   `workspaceService.test.ts`), refresh-preserves-selection and
   refresh-when-selected-workspace-disappeared (`workspaceController.test.ts`, 7 tests),
   resume + app-data wiring (`PiWebApp.workspaceTopology.test.ts`, 3 tests).
5. ✅ **`npm run verify` green** (228 files / 1843 passed, 2 skipped) and
   `.changeset/worktree-autodetect.md` exists.

Nothing in this work touched `src/server/sessiond.ts`, session runtime ownership, or the
daemon protocol. **No manual session daemon restart is required.**

## Leg tracking

- **Last completed leg:** 3 (final — wiring, docs, changeset, full verify)
- **Next leg to run:** none. Relay complete; do not spawn another runner.

## Shipped behavior, as a user sees it

A worktree created or deleted outside PI WEB shows up in (or disappears from) the workspace
list the next time the browser tab regains focus or becomes visible. Detection is
resume-scoped, not instant, by explicit human decision. A worktree whose checkout directory
was `rm -rf`ed no longer appears as a selectable workspace. Documented in `docs/faq.html`
under `#worktree-list-out-of-date`.

## Relevant context if anyone picks this branch up

- Commits: `266f941` (server filter), `d0f8f9f` (client refresh method),
  `84545fb` (wiring + docs + changeset), `79577e4` (selected-workspace freshness fix),
  `8f060d1` (drop unused `locked`), `f8c3fdb` (serialize overlapping refreshes),
  plus the `docs(relay)` packet commits.
- Second invariant, added by `79577e4`: re-pointing `selectedWorkspace` is safe **only**
  while it is keyed by `id` and skipped on unchanged metadata. Keying it by anything that can
  differ between two lists would change the selection on a background refresh; dropping the
  unchanged-metadata guard would push a new object into state on every browser focus.
- The invariant to protect on any future edit: **never route a background topology refresh
  through `selectWorkspace`.** It calls `clearActiveSession()` and
  `resetWorkspaceScopedState()` with no already-selected guard, which would close the session
  socket and blank the chat on every browser resume. `workspaceController.test.ts` was
  mutation-checked against exactly that regression in leg 2.
- The relay packet lives under `.pi-web/`, which is gitignored; packet commits used
  `git add -f`.

## Blockers

None. No intervention signal fired in any leg. The one serious known risk — visible UI churn
on refresh — did not materialize and needed no workaround.