C482–C531 research packet

Start with 490d_How_Chronological_Families_Fit_Together_Draft_20260927.md for the readable explanation. The combined C482–C531 report and five ten-step reports preserve the individual questions and reassessments. The checkpoint gives the next proposed bounded test.

journal.json contains50 sequential records. Each includes inputs, source sections, outputs, finding, reassessment and a predecessor hash. evidence/s482.py through s531.py are the executable step records. Some final steps formalize the grammar or record review decisions; they are not all new numerical discoveries.

For a safe read-only replay after extraction:

python3 evidence/verify.py

This substitutes in-memory journal functions, independently implements placeholder-preserving reversal, compares every result with the recorded journal, verifies the chain and source snapshots, and writes VERIFY.json. It does not change journal.json. Do not run the individual scripts directly on the completed packet: their normal writer enforces sequential construction from C482.

Source snapshots, the controlling source hash manifest, and independent review notes are under evidence/. Reviewers checked48 analytical steps; C530 and C531 record review reconciliation and synthesis. Historical C480/C481 suites were not re-audited. Source-path absence, failed transfer tests, generated-coordinate roles and the deferred second-order branch are preserved.

MANIFEST.sha256 covers the packet files except itself. The final ZIP is a portable checkpoint, not a canonical repository replacement.