- Add _normalize_dependencies() helper to handle all dependency type variations
- Handle None, list, JSON string, and invalid types with safe fallback to []
- Apply normalization to today and yesterday task payloads for consistency
- Ensure indexing pipeline receives normalized list dependencies
- Preserve task status feedback scoring logic (uses task.status, handles all negative cases)
- Keep contextuality validation and quality status response fields
- Improve data consistency across API and indexing surfaces
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