Implemented three new API endpoints for knowledge graph visualization:
1. GET /api/knowledge/graph - Full knowledge graph
- Returns all entries and links with optional filtering
- Supports filtering by tags, status, and node count limit
- Includes orphan detection (entries with no links)
2. GET /api/knowledge/graph/stats - Graph statistics
- Total entries and links counts
- Orphan entries detection
- Average links per entry
- Top 10 most connected entries
- Tag distribution across entries
3. GET /api/knowledge/graph/:slug - Entry-centered subgraph
- Returns graph centered on specific entry
- Supports depth parameter (1-5) for traversal distance
- Includes all connected nodes up to specified depth
New Files:
- apps/api/src/knowledge/graph.controller.ts
- apps/api/src/knowledge/graph.controller.spec.ts
Modified Files:
- apps/api/src/knowledge/dto/graph-query.dto.ts (added GraphFilterDto)
- apps/api/src/knowledge/entities/graph.entity.ts (extended with new types)
- apps/api/src/knowledge/services/graph.service.ts (added new methods)
- apps/api/src/knowledge/services/graph.service.spec.ts (added tests)
- apps/api/src/knowledge/knowledge.module.ts (registered controller)
- apps/api/src/knowledge/dto/index.ts (exported new DTOs)
- docs/scratchpads/71-graph-data-api.md (implementation notes)
Test Coverage: 21 tests (all passing)
- 14 service tests including orphan detection, filtering, statistics
- 7 controller tests for all three endpoints
Follows TDD principles with tests written before implementation.
All code quality gates passed (lint, typecheck, tests).
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Implements comprehensive search interface for knowledge base:
Components:
- SearchInput: Debounced search with Cmd+K (Ctrl+K) shortcut
- SearchResults: Main results view with highlighted snippets
- SearchFilters: Sidebar for filtering by status and tags
- Search page: Full search experience at /knowledge/search
Features:
- Search-as-you-type with 300ms debounce
- HTML snippet highlighting (using <mark> from API)
- Tag and status filters with PDA-friendly language
- Keyboard shortcuts (Cmd+K/Ctrl+K to open, Escape to clear)
- No results state with helpful suggestions
- Loading states
- Visual status indicators (🟢 Active, 🔵 Scheduled, etc.)
Navigation:
- Added search button to header with keyboard hint
- Global Cmd+K shortcut redirects to search page
- Added "Knowledge" link to main navigation
Infrastructure:
- Updated Input component to support forwardRef for proper ref handling
- Comprehensive test coverage (100% on main components)
- All tests passing (339 passed)
- TypeScript strict mode compliant
- ESLint compliant
Fixes#67
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
