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simonfrankenandClaude Sonnet 5.5 928e76154f Add problems-only view (!) and draft the write actions
`!` reduces the tree to submodules with issues (or unknown state) plus
their ancestors, reusing the filter's reduction. Adds docs/actions.md as
a draft spec for restore and stage pin.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-22 12:12:11 +02:00

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# submarine — documentation
submarine is a terminal UI for git repositories with many (recursively nested)
submodules. It shows **the submodules**, as a collapsible tree (plus the state
of the superproject itself in the header), and
describes each pin as a **branch plus distance** (`origin/main ↓1`) instead of a
bare commit hash.
## Documents
| Document | Contents |
|---|---|
| [requirements.md](requirements.md) | What the tool must do: functional and non-functional requirements |
| [state-model.md](state-model.md) | How a submodule's state is determined, summarized into issues, and how pins are resolved to refs |
| [ux-guide.md](ux-guide.md) | Layout, attention hierarchy, colors, wording, navigation and key bindings |
| [architecture.md](architecture.md) | Package layout, the provider boundary, async loading, testing |
| [actions.md](actions.md) | **Draft:** the write actions restore and stage pin |
| [decisions.md](decisions.md) | Decision log with rationale (ADR style) |
## Install
```sh
curl -fsSL https://git.simon-franken.de/simonfranken/submarine/raw/branch/main/install.sh | sh
```
Installs `submarine` and the alias `sub` (linux/macOS, amd64/arm64) to
`~/.local/bin`. Update with `submarine update`. Maintainers publish with
`GITEA_TOKEN=… make release` (see [architecture](architecture.md#distribution)).
## Status
**Prototype.** The UI is complete for browsing. It reads real repositories
through a git provider (`internal/submodule/git`): `submarine [dir]`. It
fetches in the background on startup (`--no-fetch` to skip; `f` to fetch
again) and follows changes made in other shells. `submarine --mock` shows
the built-in mock data (`internal/submodule/mock`). `!` shows only
submodules with problems. The actions `u` and `b` only show a "not
implemented" message ([drafts of the write actions](actions.md)).
Next steps, roughly in order:
1. Actions: checkout pin (`submodule update`), bump pin to tip, init.
2. (done) "Problems only" (`!`) view, reusing the tree's filter.