docs(m7-363): operator-first README rewrite

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# Minstrel
Self-hosted music server with OpenSubsonic compatibility plus an extended API for server-side smart shuffle, a dual-like model (general + contextual), session-aware radio, ListenBrainz scrobble/similarity, and Lidarr integration. Go + Postgres, packaged as a Docker container.
A self-hosted music server that thinks for you. Smart shuffle, contextual likes, ListenBrainz-aware radio, and Lidarr automation — server-side, so every client (web, mobile, Subsonic third-party) gets the same intelligence.
> State and intelligence belong on the server, not the client.
<!-- TODO: screenshot of the home page -->
## Highlights
- **OpenSubsonic-compatible.** Existing Subsonic clients (DSub, Symfonium, play:Sub, etc.) connect with no special configuration.
- **Server-side smart shuffle.** Track-similarity vectors, dual-like model (general + contextual), and session memory keep mixes coherent across devices.
- **ListenBrainz radio.** Session-aware "more like this" pulls from ListenBrainz similarity data, not a static genre tag.
- **Lidarr integration.** Triggered scans, request-driven album imports, and a quarantine flow when something doesn't fit.
- **Built-in web SPA.** Full-feature library, search, queue, playlists, and admin — no separate frontend container to deploy.
- **Flutter mobile client in flight.** Tracking issue [#356](https://git.fabledsword.com/bvandeusen/minstrel/issues/356).
## Quickstart
```yaml
# compose.yaml
services:
minstrel:
image: git.fabledsword.com/bvandeusen/minstrel:v1.0.0
ports: ['4533:4533']
volumes:
- ./music:/music:ro
- minstrel-data:/data
environment:
SMARTMUSIC_DATABASE_URL: postgres://minstrel:minstrel@db:5432/minstrel?sslmode=disable
SMARTMUSIC_LIBRARY_ROOT: /music
depends_on: [db]
db:
image: postgres:17
environment:
POSTGRES_USER: minstrel
POSTGRES_PASSWORD: minstrel
POSTGRES_DB: minstrel
volumes: [pgdata:/var/lib/postgresql/data]
volumes:
minstrel-data:
pgdata:
```
```bash
docker compose up -d
```
Open `http://localhost:4533` and complete the first-run admin setup.
For the full configuration surface, see [`config.example.yaml`](./config.example.yaml).
## Configuration
Most operators only need the env vars in the quickstart above. A few extras worth knowing:
- `SMARTMUSIC_BRANDING_APP_NAME` — rename the instance ("Family Jukebox", "Office Music"). Surfaces in the header, browser tab, and OG share previews.
- `SMARTMUSIC_STORAGE_DATA_DIR` — defaults to `./data`. Holds playlist cover collages and other generated artefacts.
- `SMARTMUSIC_LISTENBRAINZ_TOKEN` — enables ListenBrainz scrobble + similarity. Per-user tokens override the server default in Settings.
- `SMARTMUSIC_LIDARR_URL` / `SMARTMUSIC_LIDARR_API_KEY` — Lidarr integration. Configure once at the server level; per-user request flows are exposed in the admin UI.
Every yaml key has an equivalent env var (`SMARTMUSIC_<SECTION>_<FIELD>`). See `config.example.yaml` for the full list.
## Updating
- `:main` — rolling, follows the dev branch's tested tip. Recommended only for the operator who's running an upstream-watching deployment.
- `:v1.0.x` — pinned releases. Recommended default. Database migrations run automatically at startup; rollbacks require restoring a Postgres dump.
## Specs
Authoritative v1 scope lives under [`docs/`](./docs):
Authoritative scope lives under [`docs/`](./docs):
- [Server spec](./docs/smart-music-server-spec.md) — current implementation focus.
- [Client spec](./docs/smart-music-client-spec.md) — Flutter companion app; work starts once the server reaches its Subsonic-compatible baseline.
## Development workflow
- Day-to-day work happens on the `dev` branch (or feature branches merged into `dev`).
- `main` is **protected** — changes land only via pull request from `dev`.
- Production builds are cut by tagging a release (`v*`) off `main`.
## CI / container image
Forgejo Actions handles:
- Tests on push to `dev` and on PRs into `main`.
- Container image build + push to the Forgejo registry on merge to `main` (`:main`) and on `v*` tags (`:<version>`).
Task and milestone tracking: Fable (`Minstrel` project, id 12).
- [Client spec](./docs/smart-music-client-spec.md) — Flutter companion app.
## Development
Minstrel has two concurrent dev processes:
Two concurrent dev processes:
1. **Backend:** `docker compose up` starts Postgres and Minstrel on `:4533`.
2. **Frontend:** `cd web && npm install && npm run dev` — Vite dev server on `:5173` with HMR.
The Vite dev server proxies `/api/*` and `/rest/*` to the backend on `:4533`,
so session cookies work correctly when the SPA is loaded from the Vite origin.
1. **Backend:** `docker compose up` — Postgres + Minstrel on `:4533`.
2. **Frontend:** `cd web && npm install && npm run dev` — Vite dev server on `:5173` with HMR. The Vite server proxies `/api/*` and `/rest/*` to `:4533` so session cookies work.
### Production build
`docker build -t minstrel .` runs the SvelteKit build inside a `node` stage,
copies the output into the `golang` stage, and `//go:embed`s it into the
final binary. The resulting container serves the SPA from `/` alongside the
API surfaces. No separate static-file server is required.
`docker build -t minstrel .` runs the SvelteKit build inside a `node` stage, copies the output into the `golang` stage, and `//go:embed`s it into the final binary. The container serves the SPA from `/` alongside the API surfaces; no separate static-file server is required.
### Branches
- Day-to-day work happens on `dev` (or feature branches merged into `dev`).
- `main` is **protected** — changes land via PR from `dev`.
- Releases are cut by tagging `v*` off `main`; the release workflow builds and pushes the container image to the Forgejo registry.
Task and milestone tracking: Fable (`Minstrel` project, id 12).
## License
See [LICENSE](./LICENSE).