Church Translate, as it runs at the campuses

Live sermon translation into 100+ languages, running entirely on one Mac per
campus: audio in, voice detection, Whisper on the GPU, NLLB-200 in its own
process, and a built-in web server the congregation reads from on their
phones. No audio leaves the building.

This is the source only. What used to sit beside it — 14 GB of speech and
translation models, 8 GB of voice bundles, 6 GB of natural voices, the Electron
caches, and the app data holding the operator PIN and every service transcript
— is machine state and downloaded assets, and stays in the NAS backup where it
belongs. The vendored node, cloudflared and Windows ffmpeg binaries are out too
(533 MB, re-fetched for packaging); the browser-side runtime beside them is
kept, so a checkout still serves the congregation page.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docs/SETUP.md

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+# Setting it up at a campus
+
+Once per Mac. Most of the time is the app downloading its models.
+
+There is no server to deploy, nothing to configure on a NAS, and no address to
+type in. The app carries everything.
+
+---
+
+## 1. Install the app
+
+Copy **Church Translate.app** to `/Applications` on the campus Mac and open it.
+
+Two things happen on a first run and never again:
+
+- **macOS asks for microphone access.** Click Allow. Without it the app can see
+  audio devices but hears silence from all of them.
+- **It downloads about 1.5 GB of models.** Leave it running; the progress bar is
+  approximate because Hugging Face does not send a size for every file. After
+  this, opening the app takes seconds.
+
+The box at the top turns blue and says **Ready** when it is done.
+
+> The app is unsigned, so the first open needs **right-click → Open** rather
+> than a double-click. macOS only asks once.
+
+## 2. Point it at the pastor's microphone
+
+**Sermon audio → Input device.** Dante Virtual Soundcard, Waves SoundGrid and a
+console USB feed all appear here as ordinary inputs — see [AUDIO.md](AUDIO.md).
+
+Watch the meter while someone talks. Speech should push the bar past the notch
+and turn it green; room noise between sentences should sit below it. The
+**Sensitivity** slider moves the notch.
+
+## 3. Tell the congregation where to go
+
+The **What the congregation opens** panel shows every address this Mac can be
+reached at. If the Mac is on more than one network, click the address that is on
+the same network as people's phones — the QR code follows your choice.
+
+Then: **Printable poster** → print it → put it where people sit.
+
+## 4. Add the Stream Deck button
+
+One Generic HTTP action. See [COMPANION.md](COMPANION.md).
+
+## 5. Before you announce it
+
+- Press **START TRANSLATING** on the operator page and talk into the mic. Watch
+  the words appear under *What it is hearing* in the app. If those words are
+  right, everything downstream is right.
+- Scan the QR with your own phone, pick a language, confirm captions arrive.
+- Tap the speaker icon and confirm your phone reads them aloud.
+- Add anything it mishears to **Corrections** — your pastor's name, your church's
+  name, the book of Habakkuk.
+
+---
+
+## Where things live
+
+| | |
+| --- | --- |
+| The app | `/Applications/Church Translate.app` |
+| Config, PIN, transcripts | `~/Library/Application Support/Church Translate/data/` |
+| Model weights (~7 GB) | `~/Library/Application Support/Church Translate Models/` |
+| Opens at login | `~/Library/LaunchAgents/org.waterschurch.translate.plist` |
+
+To stop it opening at login:
+
+```bash
+launchctl unload ~/Library/LaunchAgents/org.waterschurch.translate.plist
+```
+
+## Another campus
+
+Copy the same `.app` across and repeat. Each campus is completely independent —
+its own settings, its own PIN, its own transcripts. Nothing syncs and nothing
+depends on anything else being up.
+
+The models download again on each new Mac. If bandwidth is tight, copy
+`~/Library/Application Support/Church Translate Models/` across by hand and the
+app will use it as-is.
+
+## What it costs per campus
+
+Nothing recurring. Dante Virtual Soundcard is about $50 once, and only if you go
+the Dante route — Waves SoundGrid and a console USB feed cost nothing.