- _write_atomic_control() now uses RETURNING id and inserts into
control_parent_links (M:N) with source_regulation, source_article,
and obligation_candidate_id parsed from parent's source_citation
- New _parse_citation() helper for JSONB source_citation extraction
- New GET /controls/{id}/traceability endpoint returning full chain:
parent links with obligations, child controls, source_count
- Backend: control_type filter (atomic/rich) for controls + count
- Frontend: Rechtsgrundlagen section in ControlDetail showing all
parent links per source regulation with obligation text + strength
- Frontend: Atomic/Rich filter dropdown in Control Library list
- Frontend: GenerationStrategyBadge recognizes 'pass0b' strategy
- Tests: 3 new tests for parent_link creation + citation parsing,
existing batch test mock updated for RETURNING clause
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
ac6134ce6d