C480 evidence and continuation

Read 490d_C480_Complete_1150_Source_Grammar_and_Fixed_E_Selection_20260925.md and 490d_Mirror_Checkpoint_After_C480_20260925.md.

The packet preserves all source records, aliases, finite role/context solutions, 408 fixed-pivot trials, integral failures and the three admitted expansions. Frozen dependencies authenticate the C479 predecessor and C265/source/graph controls. No older research campaign is replayed.

Portable replay, from this packet root, with Python 3 standard library only:

python3 evidence/check.py --out replay

Compare replay/DATA.json and replay/RESULTS.json with their originals in evidence/. The certificate binds the report, checkpoint, code, results and next-step decision. ARTIFACT_MANIFEST.json records every packet payload except itself. File hashes use SHA256. Historical source paths in SOURCE_MANIFEST.json are provenance; replay uses only the packet-relative sources/ files.

Source record indices refer to sources/C286_DATA.json → target_register. Context order is Gear, Cainan, Terah60, full430. C480's A–D classes classify 1150 inputs; C472's separately named classes classify 1250 outputs. Source absence is relative to the declared finite register.

C480 is complete. C481 is proposed only and is not executed by this packet. No upload or external mutation scripts are included or required.