chore: point independent project metadata to unified root

Ariver

2026-07-13 2d1d4ad406228ef62ab078724cb7d1556e003d01

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"CFBundleDisplayName" = "PrivateVoice Dictation";
"CFBundleName" = "PrivateVoice Dictation";
"NSMicrophoneUsageDescription" = "PrivateVoice Dictation needs microphone access for voice-to-text input.";