chore: sync latest dev into CL-10

[Wibias]

Internal synchronization PR only. Merge the current dev head into feat/cl-10-public-evidence-contract so PR #1510 can be reviewed and verified against the latest dev state. No standalone programme scope.

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[github-actions]

✅ Deterministic PR hygiene checks passed.

[github-actions]

⏳ DRAFT

• PR description needs work (thin).

What to do

• Add a real Summary and Test plan to the PR description.

This pull request was already a draft. Its draft status will be preserved after every issue above is resolved.