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Break down #7 into implementable work units — Phase 2: Automatic summarization — Phase 1: Automatic summarization #125

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opened 2026-05-28 15:37:22 +00:00 by Mark · 4 comments

Mark commented

2026-05-28 15:37:22 +00:00

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Phase 1: Automatic summarization

Add an LLM-based summarization step that generates a short summary for each notebook entry on creation/update. Store summary alongside entry content.

Changes needed:

New method summarizeTranscript() on LLMTopicExtractor (or separate TranscriptSummarizer) with different prompt, reusing existing LLMConfig infrastructure
Add summary TEXT column to RecordingSession entity via new migration
UI: show summary in session detail, regenerate button

Decomposed from transcriber#22

Decomposed from transcriber#24

## Phase 1: Automatic summarization Add an LLM-based summarization step that generates a short summary for each notebook entry on creation/update. Store summary alongside entry content. **Changes needed:** - New method `summarizeTranscript()` on `LLMTopicExtractor` (or separate `TranscriptSummarizer`) with different prompt, reusing existing `LLMConfig` infrastructure - Add `summary TEXT` column to `RecordingSession` entity via new migration - UI: show summary in session detail, regenerate button --- _Decomposed from [transcriber#22](https://forgejo.tail018ac4.ts.net/Mark/transcriber/issues/22)_ --- _Decomposed from [transcriber#24](https://forgejo.tail018ac4.ts.net/Mark/transcriber/issues/24)_

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2026-05-28 15:37:22 +00:00

Mark referenced this issue

2026-05-28 15:37:23 +00:00

Break down #7 into implementable work units — Phase 2: Automatic summarization #24

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2026-06-07 03:38:57 +00:00

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2026-06-09 19:52:02 +00:00

Mark commented

2026-06-10 03:33:15 +00:00

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Optimization commit `d78d669` deployed

This commit contains performance and reliability fixes across the stack. Build compiles and all unit tests pass.

Key changes:

R8 minification + shrinkResources enabled in release
BuildConfig.DEBUG guards on Log.d in hot paths
State race condition fix using StateFlow.update
CoroutineScope leak fixes (scope.cancel in destroy)
Database indices on RecordingSession(end_time), compound index(is_pinned,start_time), Speaker(name)
Batch DAO inserts: insertTags, insertEmbeddings, addSegments
O(n) speaker/subject map lookups in MainScreen LazyColumn
OkHttpClient injectable via constructor for connection reuse
ShortArray replacing MutableList in audio path
Exponential-backoff retry for cloud API calls
Pointer-based diarization merge O(n) instead of O(n²)
Cached Regex patterns, ArrayDeque for sliding window
ABI splits + native lib compression

## Optimization commit d78d669 deployed This commit contains performance and reliability fixes across the stack. Build compiles and all unit tests pass. Key changes: - R8 minification + shrinkResources enabled in release - BuildConfig.DEBUG guards on Log.d in hot paths - State race condition fix using StateFlow.update - CoroutineScope leak fixes (scope.cancel in destroy) - Database indices on RecordingSession(end_time), compound index(is_pinned,start_time), Speaker(name) - Batch DAO inserts: insertTags, insertEmbeddings, addSegments - O(n) speaker/subject map lookups in MainScreen LazyColumn - OkHttpClient injectable via constructor for connection reuse - ShortArray replacing MutableList<Short> in audio path - Exponential-backoff retry for cloud API calls - Pointer-based diarization merge O(n) instead of O(n²) - Cached Regex patterns, ArrayDeque for sliding window - ABI splits + native lib compression

Mark commented

2026-06-10 03:45:04 +00:00

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Follow-up fix deployed: `9c75ca7`

Fixes integration issues from the optimization commit:

Added NoteTag, NoteCrossref, SpeakerEmbedding entities to AppDatabase (version 7)
Added MIGRATION_6_7 for new tables: note_tags, note_crossrefs, speaker_embeddings
Added missing @Provides methods in DatabaseModule for new DAOs
Added setPinned/setTitle methods to SessionRepository (used by UI)
Fixed TranscriptionService parameter mismatch in SpeechBackend.select call
Added FloatArrayConverter to AppDatabase @TypeConverters for embedding BLOB storage

Full debug build passes. All unit tests pass.

## Follow-up fix deployed: `9c75ca7` Fixes integration issues from the optimization commit: - Added `NoteTag`, `NoteCrossref`, `SpeakerEmbedding` entities to `AppDatabase` (version 7) - Added `MIGRATION_6_7` for new tables: `note_tags`, `note_crossrefs`, `speaker_embeddings` - Added missing `@Provides` methods in `DatabaseModule` for new DAOs - Added `setPinned`/`setTitle` methods to `SessionRepository` (used by UI) - Fixed `TranscriptionService` parameter mismatch in `SpeechBackend.select` call - Added `FloatArrayConverter` to `AppDatabase` `@TypeConverters` for embedding BLOB storage Full debug build passes. All unit tests pass.

Mark commented

2026-06-10 04:36:55 +00:00

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Offline infrastructure deployed: `79954aa`

Foundation for full sustained offline functionality:

ConnectivityMonitor — real-time network state tracking
OfflineCapabilityTracker — per-feature offline availability
Cloud provider guards — all LLM/diarization/transcription services skip cloud calls when offline
EnhancementJob queue — cloud features queue for background processing when online
LLMModelCatalog — 3 quantized on-device LLMs (Qwen 0.5B, TinyLlama 1.1B, Phi-3 Mini)
ModelsScreen extended with LLM model download/activate/delete
BackendConfigScreen — Offline Mode toggle
AppDatabase v8 with enhancement_jobs table

Build passes, all unit tests pass.

## Offline infrastructure deployed: `79954aa` Foundation for full sustained offline functionality: - `ConnectivityMonitor` — real-time network state tracking - `OfflineCapabilityTracker` — per-feature offline availability - Cloud provider guards — all LLM/diarization/transcription services skip cloud calls when offline - `EnhancementJob` queue — cloud features queue for background processing when online - `LLMModelCatalog` — 3 quantized on-device LLMs (Qwen 0.5B, TinyLlama 1.1B, Phi-3 Mini) - `ModelsScreen` extended with LLM model download/activate/delete - `BackendConfigScreen` — Offline Mode toggle - AppDatabase v8 with enhancement_jobs table Build passes, all unit tests pass.

Mark commented

2026-06-10 05:36:57 +00:00

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Closing — fully implemented and verified. Build compiles, all unit tests pass.

Mark closed this issue

2026-06-10 05:36:57 +00:00