feat(sp10): 277CA parser + Payer-Rejected Inbox lane
- Add cyclone.parsers.models_277ca + parse_277ca (X12 005010X214)
- Per-Patient HL ClaimStatus with REF*1K (PCN), REF*EJ (tax ID),
STC category code, amount, service date
- STC classifier: A1-A3 accepted, A4/A6/A7 rejected, A8/A9 pended,
P1-P5 paid, anything else unknown
- Multiple STCs per Patient HL: last wins (canonical pattern for
'first pended, then paid' acknowledgments)
- Subscriber-level STCs surface in unscoped_statuses
- Add apply_277ca_rejections — stamps Claim.payer_rejected_* fields on
matching rows (lookup by patient_control_number, mirrors 999 path)
- New /api/parse-277ca, /api/277ca-acks, /api/277ca-acks/{id} endpoints
- New two77ca_acks table + Two77caAck ORM model
- New Claim columns: payer_rejected_at, _reason, _status_code, _by_277ca_id
- New payer_rejected lane in /api/inbox/lanes (distinct from 999
envelope rejected lane)
- New PayerConfig277CA block in config/payers.yaml + Pydantic model
- Migration 0008 bumps user_version to 8
Tests: 654 -> 688 (parser 22 + apply 6 + API 8 + config 6 + adjustments).
All 688 backend tests pass; 1 pre-existing skipped test class unaffected.
Tyler
2c0afbe9c5