Band Lineup module, as it runs in North Attleboro

The backstage stage board as a ProdDash tile: everyone scheduled on the
band, vocal and production teams for the upcoming Planning Center plan,
placed into their mic slot with photo, name and mic/pack label. Birthdays
in the service week get confetti. The display half of the standalone Band
Lineup Electron app, ported to a module — imported here exactly as
installed on NA-Ingest (v1.10.1), so the repo is where it lives from now on.

modules/band-lineup/README.md

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+# Band Lineup module
+
+The backstage stage board as a ProdDash tile: everyone scheduled on the band /
+vocal / production teams for the upcoming Planning Center plan, placed into their
+mic slot with photo, name and mic/pack label. People whose birthday falls in the
+current service week (Wednesday→Tuesday) get raining confetti and a gold glow.
+
+This is the display half of the standalone **Band Lineup** Electron app, ported
+to ProdDash. (The ProPresenter Now/Next half of that app is the separate
+`propresenter-now-next` module.)
+
+## How it fills the board
+
+1. **Slots** are the mic/pack labels you write in admin, one per line, in the
+   order they sit on stage — e.g. `[VOX 2] MIX 2`, `[DRUMS]`, `[MC] MC1`. A
+   blank line is an empty spot.
+2. Each refresh the server reads the upcoming plan's **team members** (any team
+   whose name matches a line in *Teams to include*), and matches each person to
+   a slot by their Planning Center **position** — the same loose matching the
+   Electron app uses (`matching.js`; `[VOX 2] MIX 2` takes whoever is on *Vox
+   2*). A numbered role only matches the same number, and the `MIX n` part is
+   ignored, so Vox 2 and Vox 3 never swap.
+3. **Photos and birthdays** come from Planning Center (birthdays via the People
+   API; only month + day is kept). Photos are cached on disk and served by the
+   module; birthdays drive the confetti.
+
+## Manual photos (people not on the plan)
+
+Guest speakers, MCs, stage managers — anyone not scheduled in Planning Center —
+are pinned per slot from the tile's **Edit** button (title bar): set a name,
+optionally upload a photo, optionally a `MM-DD` birthday. A manual pin overrides
+the PCO match for that slot and is kept until you Clear it. Uploaded photos live
+in the ProdDash data directory, never in the repo.
+
+## Settings
+
+- **Admin** (server-wide): Planning Center credentials, service type, plan, the
+  teams to include, the stage slots, columns, refresh interval.
+- **Per tile** (gear): birthday confetti on/off + intensity, a force-birthday
+  test picker, parallax, and show/hide for names and mic labels.
+
+## Testing without Planning Center
+
+```bash
+node modules/band-lineup/tools/pco-band-mock.js 24710      # mock PCO
+BAND_LINEUP_API_BASE=http://127.0.0.1:24710 node server.js # point the module at it
+node modules/band-lineup/matching.test.js                  # slot-matching unit tests
+```
+
+Then in `/admin` under Band Lineup enter any Client ID + Secret, pick "Sunday
+Service", and the board fills — one person (on Drums) has a birthday this week,
+so their tile rains confetti.