# Changelog

All notable changes to Library Desk will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [1.5.0] - 2025-12-26

### Added

- **Central Settings Database** - Tatlock-wide configuration via PostgreSQL
  - `SettingsClient` for async access to `system_settings` database
  - User-scoped settings with global fallback
  - API config storage with `enabled` toggle and per-source category filters
  - JSON Schema support for future UI rendering

- **External API Providers** - Modular `src/apis/` package with swappable implementations
  - `OpenMeteoProvider` - Weather with geocoding (free, no API key)
  - `NOSProvider` - Dutch news RSS (16 categories including sports)
  - `BBCProvider` - English news RSS (21 categories including sports)
  - `AggregatedNewsProvider` - Merges sources chronologically with category filtering
  - `AlphaVantageProvider` - Stock/crypto quotes (API key from settings DB)
  - Abstract base classes for provider interoperability

- **Provider Dependency Injection**
  - `WeatherProviderDep`, `NewsProviderDep`, `AlphaVantageProviderDep` type aliases
  - Async initialization with settings database integration
  - Lifecycle management in `shutdown_clients()`

- **Development Dependencies** - `requirements-dev.txt`
  - `pip-audit` for security vulnerability scanning
  - `ruff` for code quality
  - Testing packages moved from main requirements

### Changed

- News sources configurable via `news.sources` setting
- Per-source category filtering via `api.{source}.categories`
- Categories default to all if not specified

## [1.4.8] - 2025-12-25

### Added

- **Paperless Orphan Cleanup** - `POST /maintenance/cleanup/paperless` endpoint
  - Detects documents deleted from Paperless but still indexed in Library Desk
  - Removes orphaned vectors and graph nodes
  - Supports `dry_run=true` for preview mode

## [1.4.7] - 2025-12-25

### Fixed

- **Paperless Custom Field Update** - Fixed 400 error when marking documents as indexed
  - Paperless API requires field ID (integer) not field name (string)
  - Now looks up `library_indexed` field ID before updating
  - Webhook params format: `doc_url` and `title` from Jinja templates

### Added

- **Webhook Debug Endpoint** - `POST /documents/webhook-capture` for development testing

## [1.4.6] - 2025-12-25

### Fixed

- **Paperless Webhook Payload Format** - Updated model to match Paperless `include_document=true` format
  - Paperless sends `id` instead of `document_id`
  - Paperless sends full document data including `content`, `title`, `tags`, etc.
  - Webhook now uses content from payload, skipping extra Paperless API call
  - Added `extra = "ignore"` to handle additional Paperless fields

## [1.4.5] - 2025-12-25

### Added

- **Document Storage Integration** - Paperless-ngx integration for PDFs, images, and documents
  - Event-driven architecture via Paperless webhooks
  - `POST /documents/webhook` - Receive document events from Paperless workflows
  - `POST /documents/upload` - Upload files directly to Paperless
  - `POST /documents/upload-url` - Download and upload documents from URL
  - `POST /documents/search` - Semantic search across indexed documents
  - `GET /documents/health` - Paperless connectivity health check
- **DocumentSyncService** - Indexes Paperless documents into vectors and graph
  - Fetches document content via Paperless API
  - Chunks text and generates embeddings for Qdrant
  - Creates Document nodes in Neo4j knowledge graph
  - Supports multi-tenancy via user parameter in webhook URL
- **PaperlessClient** - REST API client for Paperless-ngx
  - Document retrieval, upload, and update operations
  - Health check support
- **Paperless Workflow Configuration**
  - Production workflow: Document Added (NOT tagged llm-test) → webhook to Library Desk
  - Test workflow: Document Added (tagged llm-test) → webhook with test user

### Changed

- Updated `src/config.py` with Paperless configuration settings
- Added `PaperlessDep` dependency injection for document endpoints

## [1.4.4] - 2025-12-24

### Added

- **Test Data Cleanup Endpoint** - `POST /maintenance/cleanup/test-data`
  - Purges LLM test data from wiki, graph, and vectors
  - Security-restricted to test user namespace only (`users/llm-tester/*`, `users/llm_tester/*`)
  - Supports `dry_run=true` (default) to preview before deleting
  - Scheduler task configured for weekly cleanup (Sunday 3:00 AM)

## [1.4.3] - 2025-12-24

### Changed

- **Volatile Cache System Refactored to Vector Storage**
  - Backend migrated from Redis to Qdrant for semantic search capability
  - Data converted to natural language for embedding and semantic retrieval
  - Collection naming: `volatile_{user}` for per-user isolation
  - TTL implemented via `ttl_expiry` timestamp in vector payload
  - Simplified endpoints:
    - `GET /volatile/search?q=...` - Semantic search across volatile data
    - `POST /volatile/store?namespace=...&key=...` - Store with query params
    - `GET /volatile/{namespace}/{key}` - Get specific record
    - `DELETE /volatile/{namespace}/{key}` - Delete record
  - Removed namespace-specific URL patterns (simpler API for LLM tool use)

### Added

- **HybridRAG Volatile Integration** - Volatile cache now included in multi-source search
  - Volatile results get priority boost in RRF fusion (current data ranks higher)
  - New config options: `enable_volatile`, `volatile_limit` (default 1), `volatile_threshold`
  - Timing breakdown includes `volatile_ms`
- **Volatile Cleanup Endpoint** - `POST /maintenance/cleanup/volatile`
  - Purges expired records across all `volatile_*` collections
  - Scheduler task for every 10 minutes recommended
  - Returns per-collection cleanup counts
- **Natural Language Conversion** - Structured data converted for embedding
  - Template-based conversion for each namespace (weather, news, financial, etc.)
  - Fallback for custom namespaces

## [1.4.2] - 2025-12-24

### Added

- **Volatile Cache System** - Ephemeral data storage with TTL
  - `GET /volatile/{namespace}/{key}` - Retrieve cached record
  - `POST /volatile/{namespace}/{key}` - Store/update record with TTL
  - `DELETE /volatile/{namespace}/{key}` - Remove record
  - `GET /volatile/{namespace}` - List keys in namespace
  - `DELETE /volatile/{namespace}` - Clear all records in namespace
  - `GET /volatile/stats` - Cache statistics by namespace
  - `GET /volatile/scheduled` - Records needing refresh (for scheduler)
  - `GET /volatile/namespaces` - List available namespaces with default TTLs
- **Volatile Namespaces** - Predefined categories with appropriate TTLs:
  - `weather` (30min) - Weather conditions and forecasts
  - `news` (1hr) - Headlines and breaking news
  - `financial` (5min) - Stock prices, exchange rates
  - `transit` (5min) - Train/bus schedules, delays
  - `traffic` (10min) - Commute times, road conditions
  - `air_quality` (1hr) - Pollution, pollen counts
  - `sports` (1min) - Live scores, matches
  - `social` (10min) - Social notifications
  - `system` (1min) - Service health status
  - `context` (1hr) - Session state
  - `custom` (1hr) - User-defined data
- **Refresh Schedule Support** - Optional cron expressions for scheduler integration

## [1.4.1] - 2025-12-24

### Fixed

- Wiki.js API token now optional - GraphQL API works without authentication
- Container startup failure when `WIKI_GRAPHQL_API` env var not set

## [1.4.0] - 2025-12-24

### Added

- **Maintenance Router** - New `/maintenance` endpoints for system health and cleanup
  - `GET /maintenance/health` - Lightweight health check (detailed mode available)
  - `POST /maintenance/cleanup/all` - Full orphan cleanup (vectors + graph)
  - `POST /maintenance/cleanup/vectors` - Purge orphan vector chunks
  - `POST /maintenance/cleanup/graph` - Purge orphan graph nodes
  - `POST /maintenance/reconcile-index` - Combined cleanup + reindex missing pages
- **Bidirectional Orphan Detection** - Cross-validate vectors and graph nodes
  - `find_documents_without_vectors()` - Graph nodes missing vector chunks
  - `find_chunks_without_graph_nodes()` - Vector chunks missing graph nodes
- **Qdrant Client Methods** - Bulk operations for maintenance
  - `scroll_all_points()` - Iterate all points with pagination
  - `delete_by_ids()` - Batch delete by point IDs
- **Graph Service Cleanup** - Node deletion methods
  - `delete_document_node()` - Remove document and relationships
  - `delete_collection_node()` - Remove collection and contained documents
  - `get_all_document_references()` - Get all document references for validation
- **Redis Timestamp Tracking** - `last_cleanup` timestamp for scheduler integration
- **Memory System Plan** - Documented three-tier architecture (volatile/documents/knowledge)

### Changed

- **Wiki.js Authentication** - Switched from username/password to API token
  - New `WIKI_GRAPHQL_API` environment variable for JWT token
  - Deprecated `WIKIJS_USERNAME` and `WIKIJS_PASSWORD` (kept for backwards compatibility)
- **Service Dependencies** - Added `VectorServiceDep` and `GraphServiceDep` type aliases

### Fixed

- Wiki.js client now properly handles API token auth without login flow

## [1.3.3] - 2025-12-23

### Added

- Temperature parameter to `OllamaClient.generate_text()` for controlling output determinism
- `TODO.md` tracking remaining stub endpoints to implement
- Wired `/query/semantic` endpoint to VectorService
- Wired `/query/graph` endpoint to GraphService

### Changed

- **Improved LLM prompts** based on llm-findings.md recommendations:
  - Keyword extraction: temperature 0.0, negative constraints
  - LLM re-ranking: temperature 0.0, explicit rules
  - Conflict detection: temperature 0.0, analysis steps (CoT)
  - Wiki page creation: temperature 0.3, anti-hallucination constraints
  - Page reconstruction: temperature 0.2, preservation constraints
  - Web results analysis: temperature 0.0, conservative approach
- Test fixtures now use configurable host (TEST_HOST) instead of Docker hostnames

### Removed

- Dead code: unused `get_default_user()` function
- Unused imports from routers (wiki.py, graph.py, hybrid_rag.py)
- Stub endpoints shadowed by real implementations (/stats, /ingest/document, /ingest/batch)

## [1.3.2] - 2025-12-22

### Changed

- **Consolidated Ollama model configuration** - All LLM operations now use single `OLLAMA_MODEL` environment variable
  - Removed separate `reranker_model` setting
  - HybridRAG re-ranking, consolidation analysis, and wiki page writing all use the same model
  - Improves VRAM efficiency by keeping one model hot
- Added `OLLAMA_EMBEDDING_MODEL` environment variable for embedding model (previously overloaded `OLLAMA_MODEL`)
- Updated WikiPageWriter to accept settings instead of hardcoded model name

## [1.3.1] - 2025-12-16

### Fixed

- Smart create endpoint missing `content_extractor` dependency causing 500 errors on `POST /wiki/pages/smart-create`

## [1.3.0] - 2025-12-15

### Changed

- **Two-Stage RRF Architecture** - Major refactor to level the playing field between wiki and web results
  - Stage 1: Vector and graph results merged into single "wiki" ranking using mini-RRF
  - Stage 2: Final RRF between wiki (single source) and web (single source)
  - Wiki pages no longer get 2x advantage from appearing in both vector and graph searches
  - Multi-source confirmation still determines wiki internal ranking

- **Skip synonyms in graph search** - LLM-generated synonyms (e.g., "author") no longer match unrelated graph entities (e.g., "author2000")
  - Vector search still uses synonyms for semantic similarity
  - Graph search uses only core keywords for exact entity matching

### Added

- `VECTOR_SIMILARITY_THRESHOLD` config setting (default: 0.7) to filter weak vector matches
- Deduplication in graph search to prevent same document appearing multiple times

### Fixed

- Graph search duplicate entity bug where same document could appear twice if entity linked multiple times

## [1.2.1] - 2025-12-15

### Fixed

- HybridRAG router missing `content_extractor` dependency causing 500 errors on `/query/hybrid` endpoint

## [1.2.0] - 2025-12-15

### Added

- **RAG Search Endpoint** (`POST /rag/search`)
  - Web, news, and image search via SearXNG
  - Full content extraction using Trafilatura (F1 score 0.958)
  - Redis caching with configurable TTL
  - Markdown sources summary for LLM consumption
  - Returns both extracted content and original snippets

- **Content Extraction Endpoints** (`/content/*`)
  - `POST /content/extract` - Extract content from a single URL
  - `POST /content/extract/batch` - Batch extraction (up to 20 URLs)
  - Reusable ContentExtractor client for use across the codebase

- **HybridRAG Content Extraction Enhancement**
  - Web search results now include full extracted content via Trafilatura
  - Falls back to original snippets if extraction fails
  - Improves context quality for LLM re-ranking and consumption

### Changed

- Added new configuration options:
  - `SEARCH_CACHE_TTL` - Search cache TTL in seconds (default: 300)
  - `SEARCH_TIMEOUT` - SearXNG timeout (default: 10s)
  - `CONTENT_EXTRACTION_TIMEOUT` - Per-URL extraction timeout (default: 5s)
  - `CONTENT_MAX_LENGTH` - Max extracted content length (default: 2000)
  - `SEARCH_DEFAULT_LIMIT` - Default search results (default: 10)

### Dependencies

- Added `trafilatura~=1.12.0` for content extraction

## [1.1.3] - 2025-12-14

### Added

- Watchtower update trigger in Gitea workflow after successful build

## [1.1.2] - 2025-12-14

### Fixed

- Updated registry login URL in Gitea workflow (git.schweitz.net → git.schweitz.internal)

## [1.1.1] - 2025-12-14

### Fixed

- Updated container registry tag URLs in Gitea workflow (git.schweitz.net → git.schweitz.internal)

### Added

- Tests for Smart Page Creation feature (`test_smart_create.py`)
  - Model validation tests for WikiSmartCreateRequest/Response
  - WikiService.smart_create_page method tests
  - Bidirectional entity linking utility tests
  - Endpoint validation tests

## [1.1.0] - 2025-12-11

### Added

- **Smart Page Creation Endpoint** (`POST /wiki/pages/smart-create`)
  - Combines HybridRAG research with LLM content generation
  - Searches existing wiki, knowledge graph, and web for topic context
  - Uses WikiPageWriter to synthesize findings into structured wiki content
  - Auto-generates page path from topic if not provided
  - Returns research summary with source counts

- **Bidirectional Entity Linking**
  - New shared utility (`entity_linking_utils.py`) for reusable entity linking
  - Forward links: Links entities mentioned in new pages to existing entity pages
  - Backward links: Updates existing pages that mention the new entity
  - Runs automatically in background after smart page creation

- **Version Management**
  - Added `pyproject.toml` with project metadata and version
  - Version is now read from `pyproject.toml` (single source of truth)
  - Health check endpoint returns current version
  - FastAPI docs show current version

### Changed

- Updated `config.py` to read version from `pyproject.toml`
- Updated `main.py` to use centralized version

## [1.0.0] - 2025-12-10

### Added

- Initial release extracted from portainer-core
- Wiki page management (`/wiki/pages` CRUD endpoints)
- HybridRAG search (`/query/hybrid`) with vector, graph, and web search
- Knowledge graph operations (`/graph/*`)
- Vector search operations (`/vector/*`)
- Knowledge consolidation from search results (`/consolidate/knowledge`)
- Entity linking and extraction
- Wiki.js change listener for auto-processing user edits
- Multi-tenant architecture with user namespace isolation