Improve Android VibeLink parity

[Cosm1cAC]

Summary

• Save the Android parity/UX gap report as repo documentation
• Close Android correctness gaps for route restoration, Desktop Remote fail-closed targeting, and Live Call answer correlation
• Improve Android chat/composer parity with streaming tool-card attachment, structured approval retries, prompt history, command chips, share/notification polish, and code-block copy actions
• Deepen Workspace controls and add focused Android unit tests for the new reducers/utilities

Verification

• cd apps/android && ./gradlew testDebugUnitTest (blocked on clean branch: Gradle wrapper jar is not at the path expected by gradlew; original working tree verified these Android changes with ./gradlew.bat testDebugUnitTest and ./gradlew.bat assembleDebug before creating the clean PR branch)

Notes

• Built PR from clean branch codex/android-parity-pr based on origin/main; unrelated dirty files in the original working tree were intentionally excluded.

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