chore: sync public mirror from internal

[evalops-mirror]

Summary

• sync the sanitized public tree from dx-corp/mono
• keep dx-corp/code as a generated public mirror of the private source of truth
• preserve public-owned CI and trusted-publishing workflows from the public checkout
• internal source SHA: e3696732f3a134d547cb39da1ae758c94843bc83
• last generated public sync base: c0f08c593b1f58f7802b018315b296e2a1268912
• previewed public-tree drift: 2 file(s) to copy/update and 0 stale file(s) to delete
• public-only commits since last generated sync: 0
• to pause generated syncs while hand-editing this branch, apply the sync-hold label to this PR; the sync workflow skips every push while it is set

Source-of-truth status

Projection: deixic-code

• Source: dx-corp/mono@e3696732f3a134d547cb39da1ae758c94843bc83

• Prior destination base: c0f08c5

• Content SHA-256: bfa2803b378a3e7f65c5998f3de8f85c5490f0116c8c9a650fc9254777d3e49a

• Result: drift_detected; 2 changed, 0 deleted

• Destination-owned content is preserved. Destination CI is a separate health signal.

• copy/update .repository-projection.json

• copy/update scripts/tag-release-contract.test.mjs

Drift sample

• copy/update .repository-projection.json
• copy/update scripts/tag-release-contract.test.mjs

Public-only commits since last generated sync

• none detected since last generated sync

Validation

• generated by the sync-public-release-mirror workflow in public-tree mode

Test Plan

• generated by the maestro-sync-public-release-mirror workflow in public-tree mode
• public-source-provenance require-internal-pr confirms internal source PR lineage
• generated mirror PRs use the slim public CI path (fmt/clippy/smoke + provenance); full cargo test/evals already ran on internal main for this SHA
• bot review threads on generated mirror PRs are advisory and do not block the next sync update

Staged Rollout

• Staging is unnecessary for this generated mirror PR: it does not independently promote user-visible behavior. It mirrors already-reviewed internal source from dx-corp/mono@e3696732f3a134d547cb39da1ae758c94843bc83, including existing hidden/evaluation surfaces, and keeps public package parity behind the established public-source-provenance gate.

[evalops-mirror]

Resolved 0 review-bot thread(s) on this generated public mirror PR.
Left 0 human-started thread(s) unresolved.

Review of mirrored code belongs on the mono source PR.
See https://github.com/dx-corp/mono/issues/9100 for the triage pattern.