feat:mp3

AGENTS.md

@@ -3,7 +3,8 @@
 - Linux is a GTK3 desktop recorder. It supports hosted transcription with an optional local fallback and can type at the cursor or copy to the clipboard.
 - macOS is a SwiftUI menu bar recorder targeting macOS 15. It supports the same hosted-first, local-fallback behavior as Linux, a global recording hotkey, launch at login, cursor typing, and clipboard output. When hosted-first is off, use local only. Its compact floating recorder uses teal level bars for recording feedback.
 - Android is remote-only. It provides an Android `RecognitionService`, a voice-only input method, and a floating recognition activity. Do not add a local llama.cpp path to Android.
-- All clients call OpenAI-compatible `/v1/audio/transcriptions` endpoints and clean only the Qwen3-ASR `language …<astext>` or `language …<asr_text>` prefix.
+- All clients upload 16 kHz mono, 32 kbps MP3 to OpenAI-compatible `/v1/audio/transcriptions` endpoints and clean only the Qwen3-ASR `language …<astext>` or `language …<asr_text>` prefix.
+- MP3 encoding uses the `third_party/shine` submodule pinned to `ab5e3526b64af1a2eaa43aa6f441a7312e013519` (`3.1.1-59-gab5e352`).
 - Generate the macOS Xcode project from `macos/project.yml` with XcodeGen. Treat the spec as the source of truth and leave `macos/Transui.xcodeproj` untracked.
 - The Android voice UI is an opaque, compact system surface. Teal is the recording signal. `PushToTalkButton` draws the Apps and Stop Circle glyphs with Canvas because the target device drops `ImageButton` image layers. Keep the glyphs drawn above the button background.