Re-serialize the 363 corrected 837P files through the SP39-fixed
serializer, emitting NM1*PR*2*CO_TXIX*****PI*CO_TXIX in 2010BB and
writing to ingest/corrected-v2/v2-batch-<batch-id>-<N>-claims/.
Lives under dev/unbilled-july2026/scripts/ because the unbilled-july2026
project at /home/tyler/dev/unbilled-july2026/ is NOT a git repo of its
own (the operator's working tree only). Mirroring the physical path
keeps the script's import path (sys.path.insert ../../cyclone/backend/src)
working without per-run shimming.
Verified end-to-end: ok=363 failed=0, 5 random spot-checks all show
NM1*PR*2*CO_TXIX*****PI*CO_TXIX, zero SKCO0/COHCPF fallbacks in any
of the 363 output files.
Nora
08c0430ee7