Wire BridgeAnnouncementConfig into Twilio bridge webhook handler
design: cross-language tone label vocabulary (labels must survive translation)
feat: DeepL cloud integration for Paid tier translation
research: offline translation model evaluation (VRAM vs accuracy)
feat: Heimdall license integration (LNNT key format)
feat: Elcor mode easter egg discovery path
feat: <LinnetWidget /> isolation and embeddable build output
feat: mute-to-compose mode (mic off, text input, TTS playback)
feat: session pinning for Paid+ tier (lease manager, TTL extension, idle timeout)
feat: session export (transcript + annotation JSON, local only)
feat: PWA service worker + offline caching for classifier models
feat: conversation thread UI — per-speaker annotation stream
feat: annotation history panel with confidence threshold filter