- On startup, after the local state is shown, fetch the superproject and
every initialized submodule (all remotes, prune, at most 8 at once).
Fetches never prompt; failures show git's message. --no-fetch skips it,
f fetches again.
- The header shows "fetching n/m", then the fetch age and failures; the
detail pane shows each submodule's last fetch and fetch errors.
- The git provider polls each repository's metadata (refs, HEAD, index,
.gitmodules) every 2 s and reports changes. The app reloads only what
changed, keeping old values, expansion and cursor; loads are
single-flight with coalesced reruns. Refresh is driven by the
repositories, so a fetch in another shell updates the view like ours.
- r reloads everything (worktree edits are not watched).
- Docs: F50-F53, N1/N8 rewritten, D18-D20 (D12 superseded).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Implement submodule.Provider with the git CLI so submarine reads real
repositories: `submarine [dir]`, with `--mock` for the built-in data.
- Tree reads .gitmodules recursively; Status derives presence, checkout,
worktree, staged pin, pushed state and pin -> ref resolution from local
git commands only (no network).
- Concurrent Status calls are bounded by runtime.NumCPU().
- scripts/make-fixture.sh builds a superproject covering every state; the
integration tests run against it.
- theme.Ago shows "never" for a zero time.
- Docs updated; decisions D14-D16 added.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
