feat(streaming): live transcription preview in HUD (Approach E)#59

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feat/streaming-transcription

Commits on May 22, 2026

feat(audio): add audioBufferPublisher to AudioCaptureService
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feat(asr): add SpeechRecognitionService for on-device streaming partials
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feat(pipeline): wire SpeechRecognitionService and partialTranscriptPublisher
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feat(hud): add live-preview caption strip to WaveformHUDView
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feat(app): wire streaming transcription in AppDelegate and add SR usage description
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fix(pipeline): fire onPreviewClear on Whisper error path
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feat(whiskey/p2): add Codable+Hashable to PreviewLingerMode and settings accessor
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feat(whiskey/p2): user-configurable preview linger mode (P2 complete)
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feat(asr): P3 SR graceful fallback — auth check, logging, error handling
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feat(pipeline): add PipelineError.previewUnavailable (.info severity)
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feat(hud): P3 caption strip polish — placeholder, flash animation, typography tokens
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feat(hud): sliding window caption — last 7 words + left-fade mask
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Commits on May 23, 2026

Commits on May 24, 2026

fix(lint): resolve 3 SwiftLint violations
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committed