[spelech]

Ensure GET /admin/api/stats propagates relational database query errors rather than silently substituting zero counts. Also ensure get_db_connection routes to the active PostgreSQL connection when PostgreSQL is enabled.

Fixes #49

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PR created automatically by Jules for task 3940646652307508422 started by @spelech

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[spelech]

@jules Please review and address the following items for this PR:

Issues to Fix

1. SQL Table Name Allowlist Validation:
   • In app/api/routers/settings.py:35, _count(table) interpolates the table name into SQL queries. Add explicit allowlist validation (ALLOWED_STATS_TABLES = {"indexed_files", "git_repositories", "ast_symbols"}) to prevent arbitrary table queries.
2. Requirement Traceability:
   • Tag tests in tests/backend/test_health_check_status.py with @pytest.mark.requirement("STATS-METADATA-01").
   • Re-sync docs/REQUIREMENTS.md.

How to Confirm the Fix

Run the following commands to confirm everything passes:

pytest tests/backend/test_health_check_status.py -v
python3 scripts/generate_requirements.py
pytest tests/backend/test_requirements_sync.py