`TestWatcher_SharedParentRefcount` was deterministically broken on
macOS: `t.TempDir()` lives under `/var` which is a symlink to
`/private/var`, but the watcher canonicalizes paths via
`filepath.EvalSymlinks` before storing them, so the test's `w.dirs[dir]`
lookup missed and returned `0` instead of `2`.
Adds `testutil.TempDirResolved`, a shared helper that returns
`t.TempDir()` with symlinks resolved and falls back to the raw temp dir
on error (Windows-friendly). Migrates the matching inline
`EvalSymlinks(t.TempDir())` callsites in
`agent/agentgit/agentgit_test.go` to use it.
Closes https://github.com/coder/internal/issues/1531
- feat(agent/agentgit): shorten fallback poll to 5s
- fix(site/AgentsPage): keep git tab visible after reverting to clean
- feat(site/AgentsPage): show last-checked time in git tab
> 🤖
go-git has bugs in gitignore logic. With more complex gitignores, some
paths that should be ignored aren't. That caused extra, unexpected files
to appear in the git diff panel.
If the git cli isn't available in a workspace, the /git/watch endpoint
will still allow the frontend to connect, but no git changes will ever
be transmitted.
Adds real-time git status watching for workspace agents, so the frontend
can subscribe over WebSocket and show
git file changes in near real-time.
1. Subscription is scoped to a **chat** via `GET
/api/experimental/chats/{chat}/git/watch`.
2. The workspace agent automatically determines which paths to watch
based on tool calls made by the chat (and its ancestor chats).
3. Workspace agent polls subscribed repo working trees on a 30s
interval, on tools calls, and on explicit `refresh` from the client.
4. Scans are rate-limited to at most once per second.
5. Edited paths are tracked **in-memory** inside the workspace agent.
There is no database persistence — state is lost on agent restart. This
will be addresses in a future PR.
6. Messages sent over WebSocket include a full-repo snapshot (unified
diff, branch, origin). A new message is emitted only when the snapshot
changes.
This PR was implemented with AI with me closely controlling what it's
doing. The code follows a plan file that was updated continuously during
implementation. Here's the file if you'd like to see it:
[project.md](https://gist.github.com/hugodutka/8722cf80c92f8a56555f7bc595b770e2).
It reflects the current state of the PR.
Ethan