feat(bassdrive): add the drum & bass relay and a shared wordmark font

README.md

@@ -8,9 +8,10 @@ own ANSI palette on the terminal's default background so it fits any theme
 (including transparent terminals).
 
 The station catalogue is pluggable. Beefy Player ships with
-**[SomaFM](https://somafm.com)** (≈50 curated channels) and
+**[SomaFM](https://somafm.com)** (≈50 curated channels),
 **[tilderadio](https://tilderadio.org)** (the tildeverse's single community
-stream), and the UI never talks to a station catalogue directly: it asks a
+stream) and **[Bassdrive](https://bassdrive.com)** (worldwide drum & bass), and
+the UI never talks to a station catalogue directly: it asks a
 [provider](#providers) for stations, song history and stream URLs. Press `p` to
 switch catalogue without restarting. Adding another internet-radio catalogue is
 a self-contained module, not a rewrite.
@@ -41,7 +42,9 @@ implemented here from public endpoints and open protocols.
   iTerm2 inline-image protocol. Images occupy exactly the ON AIR art cell box
   and fall back to the procedural ANSI mosaic for other terminals, failed
   loads, or blocked graphics passthrough. Images are cached in
-  `~/.cache/beefy-player/artwork`.
+  `~/.cache/beefy-player/artwork`, letterboxed rather than cropped, and an
+  image that carries an alpha channel is composited onto black — a transparent
+  PNG drawn over the mosaic reads as noise behind a station logo.
 - **Now playing** — artist, title, album, DJ, listeners, format/bitrate and
   "played N minutes ago", with procedural ANSI-shaded album art that changes
   per track. When the current track can be found on Bandcamp, a clickable
@@ -57,9 +60,10 @@ implemented here from public endpoints and open protocols.
 - **Pluggable catalogues** — one `providers` module per radio network, with a
   `p` picker in the UI, `--provider` on the command line, and the choice
   remembered per catalogue (including the last station you tuned).
-- **A hero per catalogue** — the top-left art comes from the provider: SomaFM's
-  block wordmark, or tilderadio's radio icon converted from its logo PNG to
-  half-block ANSI by `tools/ansi_art.py`.
+- **A hero per catalogue** — the top-left art is the catalogue's own name in a
+  shared half-block font: SomaFM in the spectrum gradient, tilderadio in the
+  terminal's default colour, Bassdrive in its two blues. Every hero is three
+  rows tall, so the header keeps one height.
 - **Schedule pane** — a single-stream catalogue gets a broadcast schedule
   instead of a list of one station: who is on air now, since/until when, and
   the upcoming shows grouped by day.
@@ -193,35 +197,45 @@ layout and the guessed icecast mirrors all live in
 `beefy_player/providers/somafm/`. Nothing outside that package imports it; the
 app only ever holds a `RadioProvider`.
 
-Two catalogues ship today:
+Three catalogues ship today:
 
 | slug | catalogue | station list | history | streams |
 | --- | --- | --- | --- | --- |
 | `somafm` | [SomaFM](https://somafm.com) | `channels.json` (≈50) | `songs/<station>.json` | `.pls` → icecast mirrors |
 | `tilderadio` | [tilderadio](https://tilderadio.org) | `/api/now/` (1) | `now_playing` + `history[]` | AzuraCast mounts (mp3/ogg, 320k) |
+| `bassdrive` | [Bassdrive](https://bassdrive.com) | icecast status (1) | rolling `display-title` | three mounts + mirrors |
 
-They are deliberately different shapes: one has fifty channels and PLS
-playlists, the other has a single stream whose whole catalogue arrives in the
-same response as its history. That is the seam working.
+They are deliberately different shapes: fifty channels with PLS playlists, a
+single AzuraCast stream that carries its own history, and an Icecast relay whose
+"now playing" is the *show* rather than the track. That is the seam working.
 
-The tilderadio package also exercises the two optional capabilities: its left
-pane is the broadcast schedule (`/api/schedule/`, with the live DJ coming from
-`/api/now/`) rather than a list containing one station, and its header art is
-the station's own radio icon converted to half blocks. The icon is generated,
-not hand-drawn — regenerate it after the logo changes:
+The single-stream catalogues also use the optional capabilities: their left
+pane is the broadcast schedule rather than a list containing one station, and
+they opt out of Bandcamp lookups. Bassdrive is the extreme case — Icecast
+reports one title and keeps no history, so the provider maps the title to
+`Station.dj`/`presenter` and keeps a rolling record of the shows it has heard.
 
-```bash
-uv run python tools/ansi_art.py \
-    --url https://tilderadio.org/logos/tilderadio.png \
-    --cols 22 --rows 7 \
-    --module beefy_player/providers/tilderadio/hero.py
+### Header wordmarks
+
+All three heroes come from one font, `beefy_player/providers/wordmark.py`:
+four-column capitals six pixels tall, emitted as three rows of half blocks
+(`▀`/`▄`/`█`) — the shape of the original SomaFM logo. A provider's `hero.py`
+is one line of data:
+
+```python
+# beefy_player/providers/bassdrive/hero.py
+HERO = render("BASSDRIVE", ["bright_cyan"] * 4 + ["cyan"] * 5)
 ```
 
-`tools/ansi_art.py` crops the transparent margin, resizes to 22×14 pixels (two
-per text cell), quantises to the stock 16-colour ANSI palette and emits
-run-length encoded rich markup — so the art follows the terminal's palette
-instead of pinning RGB values. `--preview out.png` draws the result, which is
-far easier to judge than ▀ and ▄.
+`render()` takes one optional style per character and groups equal neighbours
+into markup spans; with no styles the wordmark inherits the terminal's default
+foreground (tilderadio). Add a glyph to `GLYPHS` when a catalogue needs a letter
+the font does not have yet — `▀█▀` is the I, one pixel thick on purpose.
+
+Image logos are a different problem: `tools/ansi_art.py` converts a PNG into
+half-block art (`--key-white` for logos on white, `--preview out.png` to see the
+result). No shipped catalogue needs it today, but it is the tool to reach for
+when a station's identity is a picture rather than a word.
 
 Adding a catalogue:
 
@@ -347,8 +361,10 @@ beefy_player/
   config.py           XDG paths, settings, BEEFY_* env helpers
   providers/
     base.py           RadioProvider interface + HTTP/playlist toolkit
+    wordmark.py       the half-block font every hero is drawn with
     somafm/           the SomaFM catalogue (API, hero, bundled fallback list)
     tilderadio/       the tilderadio catalogue (one station, hero, schedule)
+    bassdrive/        Bassdrive (Icecast status, show schedule, rolling history)
   player.py           mpv over a Unix-socket JSON IPC channel
   spectrum.py         analyser (parec / Core Audio tap / ffmpeg / sim)
   macos_tap.py        macOS output capture (ctypes + Core Audio)
@@ -382,6 +398,14 @@ tools/
   the provider in place: the old stream is stopped, workers for the previous
   catalogue are cancelled, the hero height and left pane follow the new
   provider, and the station list (or schedule) reloads from cache first.
+- `beefy_player/providers/bassdrive/api.py` — Icecast's keyless
+  `status-json.xsl` (mounts, bitrates, listeners, `display-title`) plus the
+  homepage schedule grid, whose slots carry absolute `<local-time datetime>`
+  values. A memoised fetch and a lock keep a cold start to one homepage
+  download; the display-title's show is matched against the running slot for
+  "live from <city>".
+- `beefy_player/providers/wordmark.py` — the half-block capitals behind every
+  hero, with per-character style spans.
 - `beefy_player/widgets/schedule.py` — the left pane for single-stream
   catalogues: the live slot with its `since`/`until` window, then upcoming
   shows grouped by local day, with `… +N more` when the pane runs out.
@@ -419,7 +443,8 @@ tools/
 ~/.cache/beefy-player/channels-<id>.json last good list, other catalogues
 ~/.cache/beefy-player/schedule-<id>.json last good broadcast schedule
 ~/.cache/beefy-player/playlists.json     resolved stream URLs
-~/.cache/beefy-player/songs/<id>.json    song history snapshots
+~/.cache/beefy-player/songs/<id>.json    SomaFM song history snapshots
+~/.cache/beefy-player/songs/<p>-<id>.json history for every other catalogue
 ~/.cache/beefy-player/artwork/<sha1>     cached album/channel artwork
 ```
 
@@ -488,6 +513,8 @@ so favourites and volume survive the rename.
 - SomaFM is listener-supported: if you enjoy it, [donate](https://somafm.com/support/).
 - tilderadio is a volunteer-run community station: [drop by](https://tilderadio.org),
   or show up on the [schedule](https://tilderadio.org/schedule/) with a set.
+- Bassdrive is free and listener-supported too: [bassdrive.com](https://bassdrive.com)
+  has the shows, archives and the shop that keeps the relays running.
 
 ## NixOS (optional aside)