feat: add ui.seamColor accent

CHANGELOG.md

@@ -4,12 +4,15 @@
 
 ### Features
 - Talk mode: continuous speech conversations (macOS/iOS/Android) with ElevenLabs TTS, reply directives, and optional interrupt-on-speech.
+- UI: add optional `ui.seamColor` accent to tint the Talk Mode side bubble (macOS/iOS/Android).
 
 ### Fixes
 - macOS: Voice Wake now fully tears down the Speech pipeline when disabled (cancel pending restarts, drop stale callbacks) to avoid high CPU in the background.
 - macOS menu: add a Talk Mode action alongside the Open Dashboard/Chat/Canvas entries.
 - macOS Debug: hide “Restart Gateway” when the app won’t start a local gateway (remote mode / attach-only).
 - macOS Talk Mode: orb overlay refresh, ElevenLabs request logging, API key status in settings, and auto-select first voice when none is configured.
+- macOS Talk Mode: avoid stuck playback when the audio player never starts (fail-fast + watchdog).
+- macOS Talk Mode: increase overlay window size so wave rings don’t clip; close button is hover-only and closer to the orb.
 - Talk Mode: wait for chat history to surface the assistant reply before starting TTS (macOS/iOS/Android).
 - Gateway config: inject `talk.apiKey` from `ELEVENLABS_API_KEY`/shell profile so nodes can fetch it on demand.
 - Canvas A2UI: tag requests with `platform=android|ios|macos` and boost Android canvas background contrast.