feat(flow): harden host handoff, session UX, and Live Activity brand

- fix(keyboard): drop unusable extensionContext.open; report the real
  result of UIApplication.open and cancel the start watchdog immediately
  on failure with clear "open OSGKeyboard" guidance instead of a 30s spin
- feat(capture): recover from audio route changes (AirPods/wired headset
  plug-unplug) and phone-call interruptions by rebuilding the engine/tap
  against the live hardware format
- feat(home): add a "Start" button in the Home footer when a session is
  inactive and permissions are granted (no-jump manual restart)
- feat(hostapps): expand the return whitelist to 46 apps (Signal, Zoom,
  Instagram, X, Douyin, Zhihu, Bilibili, Things, Firefox, ...) with
  en/zh-Hans names and synced LSApplicationQueriesSchemes
- feat(island): use a "ready" checkmark instead of a mic glyph while idle
  and set a staleDate so an orphaned Live Activity fades after a force-quit
- feat(coldstart): use the template OSG brand mark instead of a system
  waveform glyph in the cold-start overlay
- perf(keyboard): rely on Darwin notifications as the primary session
  signal and drop the fallback poll from 1s to 3s
- fix(keyboard): remove the redundant "Start" text button next to the
  inactive-session hint on the keyboard
- docs: correct the per-take cap to 210s (3.5 min) and document that
  force-quitting no longer resurrects the session (tracker + READMEs)

project.yml

@@ -140,6 +140,30 @@ targets:
           - googlechrome
           - sinaweibo
           - xhsdiscover
+          - sgnl
+          - kakaotalk
+          - viber
+          - zalo
+          - skype
+          - zoomus
+          - things
+          - todoist
+          - evernote
+          - onenote
+          - readdle-spark
+          - firefox
+          - microsoft-edge
+          - fb
+          - instagram
+          - twitter
+          - barcelona
+          - snapchat
+          - reddit
+          - pinterest
+          - zhihu
+          - bilibili
+          - snssdk1128
+          - tiktok
         # All network calls are HTTPS (NSAppTransportSecurity above);
         # nothing in the app uses non-exempt encryption. Declaring
         # `ITSAppUsesNonExemptEncryption: false` lets us skip the