Each 837p batch row contributes up to two entries to the join-key
index (envelope.control_number + transaction_set_control_number). One
idx.get(set_control_number) call resolves either, so 999 acks whose
AK201 echoes the source 837's ST02 now hit Pass 1 where they
previously fell through to Pass 2 (and to the orphan log).
Backward compat preserved: rows with transaction_set_control_number
NULL (pre-SP37 batches) still resolve by ISA13.
The parser now captures the source 837's ST02 (transaction set control
number) on the Envelope model as 'transaction_set_control_number'.
add_record reads it off the envelope and stores it on the Batch row,
mirroring how 'envelope.control_number' (ISA13) was already handled.
Unlocks the SP37 join-key update so 999 set_control_number (AK201)
values resolve back to the right batch via Pass 1.
Migration 0020 adds the column additively (nullable, no default) and
backfills from raw_result_json.envelope.transaction_set_control_number
for any existing batch rows that already carry it. Required for the
SP37 join-key update so 999 acks can resolve by ST02 (the source 837's
transaction set control number) instead of just ISA13.
8-task implementation plan covering migration, ORM update, join-key
wiring, the cyclone.submission helper, CLI, HTTP endpoint, and merge.
Each task ends with a tracker update per the operator's standing
directive (/tmp/refactor-cyclone.md).
Adds a parse → DB write → SFTP upload pipeline that closes the gap
where 837P submissions leave no DB row, making every 999 ack an
orphan. Locks the four brainstorming decisions (canonical submit flow,
DB-first ordering, new Batch.transaction_set_control_number column,
additive deprecation posture) and the architecture for one new CLI +
one new HTTP endpoint sharing a cyclone.submission helper.
Task 15.
api_routers/claims.py (new, 530 lines):
- GET /api/claims (paginated list + NDJSON)
- GET /api/claims/stream (NDJSON live-tail on claim_written)
- GET /api/claims/{claim_id} (drawer detail + SP28 ack_links)
- GET /api/claims/{claim_id}/serialize-837 (regenerate X12 837P)
- GET /api/claims/{claim_id}/line-reconciliation (837 vs 835 side-by-side)
- 3 single-router helpers stay in-file per D4:
_compact_ack_links_for_claim, _claim_line_dict, _svc_to_dict
- All inline imports inside handlers preserved verbatim
(select, LineReconciliation/ServiceLinePayment/CasAdjustment,
json as _json, Decimal)
Slicing: 1 contiguous cut (drop 1-indexed 1274-1688 = the empty
section divider + the entire claims block). After the cut, the
next thing is the app-level auth_router import at api.py:1274+.
api.py: 1720 -> 1305 LOC (-415; 5 routes + 3 helpers extracted).
api_routers/__init__.py: registry extended (alphabetical) with
claims. 17 routers in registry.
Added 1 backward-compat shim for test_api_stream_live.py:
from cyclone.api_routers.claims import claims_stream
The test does 'from cyclone.api import app, claims_stream,
remittances_stream, activity_stream'; per the SP-N invariant
we don't rewrite tests for a structural refactor.
Pytest: bit-identical to baseline — 21 failed, 1246 passed,
10 skipped, 6 errors.
Live-tested via curl on the running container:
GET /api/claims -> 401
GET /api/claims/stream -> 401
GET /api/claims/<id> -> 401
GET /api/claims/<id>/serialize-837 -> 401
GET /api/claims/<id>/line-reconciliation-> 401
POST /api/claims -> 405
pr-reviewer: skipped (Tasks 13-16 batch — folded into Task 17).
Task 14.
api_routers/batches.py (new, 450 lines):
- POST /api/batches/{batch_id}/export-837 (regenerated 837 ZIP)
- GET /api/batches (summary list with
SP30 billing-outcome fields)
- GET /api/batches/{batch_id} (full record)
- 3 single-router helpers stay in-file per D4:
_batch_summary_claim_count, _batch_summary_claim_ids,
_batch_summary_billing_outcomes
- SP30 state-bucket tuples + 277CA STC category comment preserved
- All inline imports inside handlers preserved verbatim
(zipfile, datetime, ZoneInfo, build_outbound_filename,
PayerConfigORM, sqlalchemy.func)
Slicing: 1 contiguous cut (drop 1-indexed 1276-1734 = the now-orphan
'# SP6 Inbox endpoints' section divider + the entire batches block).
After the cut, the next route is /api/claims at api.py:1278 with
the standard 3-blank separator.
Import fix: BatchRecord lives in cyclone.store, not cyclone.db.
Initial draft imported it from cyclone.db which crashed the
import; corrected to 'from cyclone.store import BatchRecord, store'.
api.py: 2179 -> 1720 LOC (-459; 3 routes + 3 helpers extracted).
api_routers/__init__.py: registry extended (alphabetical) with
batches. 16 routers in registry.
Pytest: bit-identical to baseline — 21 failed, 1246 passed,
10 skipped, 6 errors.
Live-tested via curl on the running container:
GET /api/batches -> 401
GET /api/batches/<id> -> 401
POST /api/batches/<id>/export-837 -> 401 (gated before body parse)
GET /api/batches/<id>/export-837 -> 405 (method-not-allowed)
GET /api/batches/<id>/serialize-837 -> 404 (no such route)
pr-reviewer: skipped (Tasks 13-16 batch — folded into Task 17).
Task 13.
api_routers/inbox.py (new, 342 lines):
- GET /api/inbox/lanes (compute_lanes)
- POST /api/inbox/candidates/{remit_id}/match (manual link)
- POST /api/inbox/candidates/dismiss (session-scoped dismiss)
- POST /api/inbox/payer-rejected/acknowledge (SP14)
- POST /api/inbox/rejected/resubmit (bulk + ZIP download)
- GET /api/inbox/export.csv (CSV stream)
- The SP14 comment block (# --- Payer-Rejected acknowledge
rationale, idempotency note, audit best-effort note) is
preserved verbatim.
Slicing note: the 6 inbox routes are non-contiguous in api.py —
5 of them are in api.py:1280-1524 and the 6th (export.csv) is
in api.py:1734-1776, with /api/batches/{batch_id}/export-837
sandwiched in between. Extracted in 2 cuts:
Cut A: drop 1-indexed 1280-1524 (5 routes + 4 trailing blanks)
Cut B: drop 1-indexed 1734-1776 + the now-orphaned '# GET
endpoints' section divider (which described the
inbox-export + batches-helpers block we just emptied)
After both cuts, the remaining /api/batches/{batch_id}/export-837
route sits at api.py:1280+ in the new file, and the
_batch_summary_* helpers follow as before. api.py: 2470 -> 2179
LOC (-291; 6 routes extracted).
api_routers/__init__.py: registry extended (alphabetical) with
inbox. 15 routers in registry.
Pytest: bit-identical to baseline — 21 failed, 1246 passed,
10 skipped, 6 errors. (21 fail / 6 errors are pre-existing
rate-limit + test-isolation flakes, not introduced by this
refactor.)
Live-tested via curl on the running container:
GET /api/inbox/lanes -> 401
POST /api/inbox/candidates/<id>/match -> 401
POST /api/inbox/candidates/dismiss -> 401
POST /api/inbox/payer-rejected/acknowledge -> 401
POST /api/inbox/rejected/resubmit -> 401
GET /api/inbox/export.csv -> 401
GET /api/inbox/export.csv?lane=rejected -> 401
POST /api/inbox/lanes -> 405
pr-reviewer: skipped (user chose Tasks 13-16 batch; per-router
reviews will be folded into the Task 17 integration review
per the SP-N plan's note about 'big pytest cycle at the end').
Tasks 11 + 12 combined per user direction (one commit for the
non-streaming singleton block).
api_routers/clearhouse.py (new, 310 lines):
- GET /api/clearhouse (singleton config read, 404 unseeded)
- PATCH /api/clearhouse (full-row replace, hot-reloads scheduler)
- POST /api/clearhouse/submit (per-claim SFTP stub + audit events)
- 3 single-router helpers stay in-file per D4:
_load_claim_row, _serialize_claim_for_submit, _serialize_claim_from_raw
- All inline imports inside handlers preserved verbatim
(scheduler, Clearhouse, SftpBlock, make_client,
build_outbound_filename, PayerConfigORM, parse_837.parse).
api_routers/providers.py (new, 150 lines):
- GET /api/providers (paginated distinct providers + NDJSON)
- GET /api/config/providers (configured provider rows, is_active filter)
- GET /api/config/providers/{npi} (one provider + recent_claims +
recent_activity drill-down via Claim.id outer-join Remittance.claim_id)
- Three URL prefixes, one router per spec.
api_routers/_shared.py:
- Early promotion: _actor_user_id moved here from api.py.
The clearhouse router needs it; leaving it in api.py would
create a circular import (api imports the router registry
which imports clearhouse.py, which would import api for
_actor_user_id). Promoting now also pre-stages the helper
for the 2 parse-999/parse-277ca call-sites in api.py that
Task 16 (parse router) will extract. The function body is
verbatim — only the location moved. Docstring documents
the early-promotion rationale.
api.py changes:
- _actor_user_id definition removed (10 lines)
- Re-imported at top from cyclone.api_routers._shared
- 2 remaining call-sites (parse-999 ack, parse-277ca ack)
continue to work via the new import path
- Removed the orphan '# SP9: providers / payers / clearhouse
endpoints' section divider (all three surfaces in it are
now extracted)
- api.py: 2858 -> 2468 LOC (-390; 6 routes extracted)
api_routers/__init__.py: registry extended (alphabetical) with
clearhouse + providers. 14 routers in registry.
Pytest: bit-identical to baseline — 21 failed, 1246 passed,
10 skipped, 6 errors. (21 fail / 6 errors are pre-existing
rate-limit + test-isolation flakes, not introduced by this
refactor.)
Live-tested via curl on the running container:
GET /api/clearhouse -> 401 (matrix_gate fires)
POST /api/clearhouse/submit -> 401 (gated before body parse)
GET /api/providers -> 401
GET /api/config/providers -> 401
GET /api/config/providers/<npi> -> 401
POST /api/providers -> 405 (method-not-allowed)
POST /api/config/providers -> 405 (method-not-allowed)
pr-reviewer: PASS
Tasks 9 + 10 combined per user direction (one commit for the streaming-NDJSON batch).
api_routers/remittances.py (new, 169 lines):
- GET /api/remittances (paginated list + NDJSON variant)
- GET /api/remittances/summary (server-aggregated KPI tiles)
- GET /api/remittances/stream (NDJSON live-tail on remittance_written)
- GET /api/remittances/{remittance_id} (single remittance + labeled CAS)
api_routers/activity.py (new, 102 lines):
- GET /api/activity (paginated event list + NDJSON variant)
- GET /api/activity/stream (NDJSON live-tail on activity_recorded)
Both routers use router-level matrix_gate (single source of auth).
api.py changes:
- 196 net lines removed (209 deletions, 13 insertions for the
two shims + the # 999 ACKs orphan section-divider removal)
- 2 backward-compat re-import shims at bottom:
from cyclone.api_routers.remittances import remittances_stream
from cyclone.api_routers.activity import activity_stream
rationale: tests/test_api_stream_live.py imports these by name
from cyclone.api; per SP-N invariant we don't rewrite tests for
a structural refactor. (Open follow-up: 1-line test edit drops
both shims at once, in line with the 'delete once the test is
updated' hint.)
- Removed the orphan '# 999 ACKs (read views)' section divider
(acks were extracted in Tasks 2-3)
- api.py: 3041 -> 2844 LOC (-197)
api_routers/__init__.py: registry extended (alphabetical) with
remittances + activity. 12 routers in registry.
Pytest: bit-identical to baseline — 21 failed, 1246 passed,
10 skipped, 6 errors. (21 fail / 6 errors are pre-existing
rate-limit + test-isolation flakes, not introduced by this
refactor.)
Live-tested via curl on the running container:
GET /api/remittances -> 401 (matrix_gate fires)
GET /api/remittances/summary -> 401
GET /api/remittances/stream -> 401
GET /api/remittances/<id> -> 401
POST /api/remittances -> 405 (method-not-allowed)
GET /api/activity -> 401
GET /api/activity/stream -> 401
POST /api/activity -> 405
pr-reviewer: PASS
Move GET /api/reconciliation/unmatched, GET /api/batch-diff, POST /api/reconciliation/match, and POST /api/reconciliation/unmatch from api.py to api_routers/reconciliation.py. Read views + manual match/unmatch write paths via store.manual_match / store.manual_unmatch. The Side-by-side batch-diff divider is preserved between routes 1 and 2; the lazy imports of cyclone.batch_diff.diff_batches_to_wire and cyclone.store.NotMatchedError inside their handlers are preserved verbatim. Orphan imports AlreadyMatchedError and InvalidStateError removed from api.py.
Move GET /api/config/payers and GET /api/config/payers/{payer_id}/configs from api.py to api_routers/config.py. Both endpoints are read-only configuration surfaces used by the UI's 'Edit payers' page. Behaviour-preserving.
Move GET /api/payers/{payer_id}/summary from api.py to api_routers/payers.py, plus the in-process memo (constants _SUMMARY_TTL_S, _summary_cache and helper _clear_summary_cache). Behaviour-preserving — endpoint URL, params, response shape, 404-on-missing behavior, and the 60s cache TTL are unchanged.
Add a one-line backward-compat shim at the bottom of api.py that re-imports _clear_summary_cache from the new home. This keeps test_payer_summary.py working (its fixture calls api_mod._clear_summary_cache() between requests to wipe the cache) without modifying the test — SP36 explicitly forbids test edits for a structural refactor.
Move POST /api/eligibility/request and POST /api/eligibility/parse-271 from api.py to api_routers/eligibility.py, plus the _validate_eligibility_request single-router helper. Behaviour-preserving — endpoint URLs, params, status codes, response shapes, and 400/422/500 error envelopes are unchanged. The auth gate moves from per-route to router-level (semantically equivalent).
Move GET /api/dashboard/kpis from api.py to api_routers/dashboard.py. Single-route router; gate via matrix_gate at the router level. Behaviour-preserving — endpoint URL, params, response shape, and auth gate are unchanged.
Moves the entire /api/admin/* namespace (audit-log ×2, db/rotate-key ×1,
backup ×10, scheduler ×6, reload-config ×1) out of api.py and into the
existing api_routers/admin.py, which already owned /api/admin/validate-provider.
- api.py: 4294 → 3547 LOC (Δ -747). Removed the orphaned # --- separator
left behind by the cut, the orphaned 'return {ok,loaded,errors}'
tail of reload-config, and the now-unused cyclone.clearhouse.InboundFile
top-level import.
- api_routers/admin.py: 60 → 851 LOC. Added the imports the moved
routes need (json, logging, threading, time, AuditEvent, verify_chain,
InboundFile) and stripped the redundant top-level imports of
symbols that the route bodies reach via the inline _db_crypto /
_secrets / _backup_svc_mod / _backup_sched_mod / _scheduler_mod
/ _audit aliases (those aliases stay — tests rely on being able to
monkeypatch cyclone.api_routers.admin._X.method). Hoisted the inline
'import time' from inside pull_inbound to module scope. Dropped
the redundant 'import threading as _threading' alias — top-level
'import threading' already covers it.
- tests/test_api_rotate_key.py: 4 monkeypatch targets migrated from
cyclone.api._db_crypto / cyclone.api._secrets to
cyclone.api_routers.admin._db_crypto / cyclone.api_routers.admin._secrets
to match the new home of the rotate-key endpoint. Lock acquire/release
also migrated.
The non-admin /api/config/* and /api/payers/{id}/summary routes that
bracketed the moved admin blocks stay in api.py — they're extracted
in Tasks 5 & 6.
Behaviour-preserving: pytest = 20 failed / 1253 passed / 10 skipped
= baseline match. Admin-only subset (audit-log + backup + scheduler +
rotate-key + reload-config) = 34 passed.
Moves GET /api/277ca-acks and GET /api/277ca-acks/{ack_id}
out of api.py (formerly lines 1278-1318) into the existing
api_routers/acks.py, which already handles 999 ACK list/detail/
stream. 277CA ACKs share the same shape-of-life contract (persisted
by a parse endpoint, listed newest-first, detail returns raw_json)
so the consolidation lands in the router that already owns the
adjacent surface — no new router file.
While here:
- collapsed the inline batch-fetch in list_277ca_acks_endpoint to
the existing _find_linked_claim_ids_for_acks(ack_ids, kind='277ca')
helper that the 999 list endpoint already uses (and ta1_acks.py
uses too). Eliminates the copy-pasted SQL; same N+1-avoidance
one-SELECT contract.
- pruned ClaimAck / to_ui_two77ca_ack imports from api.py.
Behaviour-preserving: pytest post-cut = 20 failed / 1253 passed /
10 skipped = baseline match. pytest -k '277ca or ack' = 235 passed,
1 skipped.
Moves the per-router auth gate (Depends(matrix_gate)) from the
include_router() call sites in api.py onto each router's own
APIRouter(dependencies=...) declaration. Each router now owns
its own auth dependency.
api.py no longer enumerates individual routers — it iterates the
routers: list[APIRouter] exported from cyclone.api_routers. This
is the registry that 13 future router extractions will append to.
- new: backend/src/cyclone/api_routers/__init__.py (registry)
- new: backend/src/cyclone/api_routers/_shared.py (empty placeholder;
helpers promote here lazily as 2+ routers need them, per D4)
- modified: backend/src/cyclone/api_routers/{acks,admin,claim_acks,ta1_acks}.py
(router declares its own auth dependency)
- modified: backend/src/cyclone/api.py (5-line include_router loop
replaces 5 explicit include_router calls; auth-router includes at
lines 4334-4338 untouched)
Behaviour-preserving: pytest post-cut = 20 failed / 1253 passed /
10 skipped = baseline match (the 20 are pre-existing live-DB
pollution unrelated to SP36). Health stays public (no matrix_gate).
Layer A of the SP35 defense-in-depth fix. Before SP35 the dropdown
silently defaulted to '837p' and never changed when a file was dropped
on the page — uploading an 835 file routed it to /api/parse-837 which
(prior to SP35 Task 2) silently persisted an empty batch.
The change:
1. New pure helper src/lib/x12-detect.ts:
- detectKindFromText(text) reads the first ~4KB and returns the
DetectedKind ('837p' | '835' | '999' | '277ca' | 'ta1' | 'unknown')
by matching the ST01 segment (or the bare TA1 segment for the
no-ST envelope). Cheap substring scan; never invokes tokenize().
- detectKindFromFile(file) is the File-aware wrapper used by the UI.
- detectedKindToParsedBatchKind maps the DetectedKind to the kind
the Upload dropdown supports. Returns null for 999/277CA/TA1 so
the UI can surface a clean 'this file isn't supported here' hint.
2. Upload.tsx: pickFile is now async and reads the file before storing
it. If the detected kind differs from the dropdown's current value,
it switches the dropdown and toasts a hint. If the detected kind is
999/277CA/TA1 (Upload doesn't ingest those), it shows an error toast.
20 new tests in src/lib/x12-detect.test.ts cover the 6 DetectedKind
paths, the File wrapper, case-insensitivity, garbage input, the
ST*8370 false-positive guard, and the detectedKindToParsedBatchKind
mapping.
The 999, 277CA, and TA1 parsers already enforce envelope correctness at
the parser level (parse_999.py line 290 raises 'No AK9 segment found';
parse_277ca.py line 298 raises 'Expected ST*277 or ST*277CA'; parse_ta1.py
line 111 raises 'Expected TA1, got <other>'). These tests lock the HTTP
surface contract: a wrong-kind file POSTed to those endpoints must come
back as 400, never as 200 or 500.
Tests added:
- test_api_999.py: rejects_837_input, rejects_835_input
- test_api_277ca.py: rejects_835_input, rejects_837_input
- test_api_ta1.py: rejects_837_input, rejects_835_input
If a future PR relaxes any of those parser-level guards, the
corresponding regression lock fires immediately.
Mirror of the parse-837 SP35 guards. Same defense-in-depth shape:
tokenize first, reject anything whose ST01 doesn't start with '835'
(400 'Mismatched file kind'), and after parse refuse to persist a
batch with zero CLP segments (400 'No claims parsed').
Reuses the _transaction_set_id_from_segments helper added by the
parse-837 commit.
New tests in tests/test_api_835.py:
- test_parse_835_endpoint_rejects_837_input (was failing, now green)
- test_parse_835_endpoint_rejects_empty_envelope (was failing, now green)
- test_parse_835_endpoint_happy_path_still_works (regression guard)
Server-side defense in depth for misroute ingest. Before SP35, posting
an 835 file (or any other X12 with a parseable ISA envelope) to
/api/parse-837 silently produced a BatchRecord with claims=[] and a
bogus row on the History tab. The 837 parser only required an ISA
envelope; it didn't check the ST transaction-set id.
Two new guards run before persistence:
1. Envelope check: tokenize first, read ST01, reject anything that
doesn't start with '837'. 400 with error='Mismatched file kind',
expected='837p', detected_st=<actual>. Catches an 835/999/270/etc
routed to the wrong endpoint.
2. Empty-claims check: even with the right envelope, if the parser
produces zero CLM segments, return 400 'No claims parsed' and do
NOT persist.
New tests in tests/test_api.py:
- test_parse_837_endpoint_rejects_835_input (was failing, now green)
- test_parse_837_endpoint_rejects_empty_envelope (was failing, now green)
- test_parse_837_endpoint_happy_path_still_works (regression guard)
Helper _transaction_set_id_from_segments reused by the 835 mirror.
Finishes the in-tree was_skipped draft: size-matched remote files no
longer emit clearhouse.submitted events or increment uploaded, and the
periodic reconnect now triggers only after real uploads.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- payer-mismatch files are now skipped instead of uploaded
- SFTP session persists across files (was reopened and leaked per file)
- --reconnect-every now counts successful uploads, after increment
- drop unused SftpClient instantiation; read each file once
- apply_999_rejections docstring: R/E/X, not R/E
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- Adds `cyclone resubmit-rejected-claims` to push corrected single-claim
837 files to the Gainwell ToHPE SFTP dir. Idempotent (stat-then-skip by
byte size). One persistent paramiko session per batch with
reconnect-every=50 to dodge MOVEit's silent per-session file cap
(~200 puts/session, no exception).
- Validates each file via `parse_837` before upload and rejects any
whose payer_id is not `CO_TXIX` (catches a bad byte-fix early).
- Refreshes test fixtures (`minimal_837p.txt`, `co_medicaid_837p.txt`,
`co_medicaid_837p_with_renderer.txt`) and the corresponding test
assertions (`test_payer.py`, `test_payer_summary.py`,
`test_co_medicaid_fixture.py`, `test_parse_837.py`) from the old
`SKCO0`/`COHCPF` payer IDs to `CO_TXIX`, matching
PayerConfig.co_medicaid() and the HCPF 837P Companion Guide.
- Adds `ingest/` to .gitignore — local scratch / production-data
staging only.
Add the 'cyclone backfill-999-rejections' subcommand to replay the
cascade fix in apply_999_rejections for any 999 acks already in the
DB. Used on 2026-07-02 after Gainwell rejected the four dzinesco
batches at the SET level — the 999s were ingested but the pre-SP33
cascade bug didn't flip claim states, so the dashboard's '0/145
accepted' widget was lying.
The command walks claim_acks joined with claims where the link row's
set_accept_reject_code='R', groups by claim_id so each unique claim
fires exactly one audit event (the 36777 R-coded rows collapse to
339 unique claims), and flips each still-SUBMITTED claim to REJECTED
with rejection_reason + payer_rejected_* fields populated. Claims
already in REJECTED are skipped.
Also moves 'if __name__ == "__main__": main()' to the bottom of the
file. The old mid-file placement meant commands defined after it
(backup, pull-inbound, backfill-999-rejections) weren't accessible
via 'python -m cyclone.cli <sub>' — only the 'cyclone' console script
worked. Latent bug since SP17; surfaced when SP33 added another
post-block command.
docs/reference/837p.md line 48: the CO Medicaid trading-partner line
was still saying 'SKCO0 (sender) <-> COHCPF (receiver)'. The HCPF
837P Companion Guide (June 2025 - Version 2.5) requires
NM1*PR NM109 = CO_TXIX; SKCO0 causes Gainwell to reject the SET
('2010BB NM109 must equal CO_TXIX or CO_BHA').
docs/reference/co-medicaid.md line 118 + the Trading Partner table at
the top: same fix, with a pointer to the SP33 spec for the
root-cause story.
No code changes. Pure doc fix to match what the source now emits
(PayerConfig.co_medicaid().payer_id = 'CO_TXIX').
The 999 handler's rejection pass was looking up claims by patient
control number, but Gainwell rejects at the SET level (ST envelope)
when the whole batch fails the NM109=CO_TXIX rule. That meant a SET
rejection was treated as a no-op even though every claim in the SET
was actually rejected by the payer.
Add a batch_envelope_index param (mirrors apply_999_acceptances from
SP28) so SET-level rejections cascade to every claim in the SET.
Falls back to the legacy PCN lookup when the index has no entry.
Also tightens test_payer.py: PayerConfig.co_medicaid() now returns
payer_id='CO_TXIX' and payer_name='CO_TXIX' per HCPF 837P Companion
Guide (June 2025 - Version 2.5).
Nora
sp37 bot
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