Localized bar strings, signal-gated listening, warm microphone, animation styles

- The bar speaks the language being dictated ("Ouvindo…", "Escuchando…", …).
- Green now means real audio is arriving, not just that pw-record connected:
  a Bluetooth microphone sends silence while it switches profile, which is
  where the first words were being lost.
- Advanced → "Keep the microphone open": the stream is parked between
  recordings and a recording starts instantly with ~0.6 s of pre-roll.
- Settings → "Bar animation": bars, wave, pulse or dots.
- pw-record is shut down off the event loop so a cancel can never stall.

plugin/Service.qml

@@ -39,6 +39,8 @@ Item {
   readonly property string agentName: state.agentName || ""          // omarchy's default coding agent
   readonly property bool agentMode: !!state.agentMode                // this recording goes to the agent
   readonly property var missing: state.missing || []                 // tools a stock machine still lacks (voxtype, wtype…)
+  readonly property var strings: state.strings || ({})               // bar wording in the language being dictated
+  readonly property bool warm: !!state.warm                          // the microphone stream is kept open between recordings
   property var sources: []                                           // microphones (sent with the greeting and on `get`)
 
   // ---- history (fetched on demand; the daemon says when it changed) ----