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PHASE 4: SEARCH FUNCTIONALITY TESTING
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=== 4.1 Keyword Search ===
  [OK] POST /api/search works
  [OK] Search for "machine learning" returns 2 results
  [OK] Results include snippet text
  [OK] Results include relevance score
  [OK] Response time: ~30ms

=== 4.2 Topic-Specific Search ===
  [OK] Search for "quantum computing" returns 1 result
  [OK] Correct document returned (test_quantum_computing)

=== 4.3 Documents List ===
  [OK] GET /api/documents returns document list
  [OK] Documents include metadata (title, status, quality)
  [OK] Pagination works (limit parameter)

=== 4.4 Document Details ===
  [OK] GET /api/documents/<id> returns full document info
  [OK] Includes concepts extracted
  [OK] Includes chunk count
  [OK] Includes classification confidence

=== 4.5 Topics Endpoint ===
  [OK] GET /api/topics returns topic list
  [OK] Topics include document counts
  [OK] 32 topics available

=== 4.6 Concepts Endpoint ===
  [OK] GET /api/concepts returns concept list
  [OK] Categories included: History, Philosophy, Religion/Spirituality, Science, Technical
  [OK] Concepts linked to documents

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PHASE 4 RESULT: ALL TESTS PASSED
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Search Features Working:
- Keyword search with relevance scoring
- Full-text search vectors (tsv)
- Document listing and details
- Topics and concepts retrieval
- Snippet generation for results
