chore: dogfood layered agent context

[shivros]

Summary

• Pin Creed's composed source to reviewed TechGodHQ/agent-context commit d678bf718664cd2f894279350f6a2010015c8af2.
• Regenerate CLAUDE/Codex context with organization procedures before Creed-local context; remove duplicated local Git/PR policy.
• Add a v0.4.1 Creed drift job and ignore sync target metadata.

Verification

• Clean-cache released creed@v0.4.1: validate, sync, repeated idempotent sync, and diff.
• Verified layered creed push is rejected.
• go build ./...
• go test -race -count=1 ./...
• go vet ./...
• gofmt -l .
• scripts/check-generated.sh

Closes COD-448.

[shivros]

🤖 Automated Review Panel

Reviewer A

APPROVE — the layered manifest pins the reviewed full SHA, preserves org-before-local ordering, removes policy now covered by the shared layer, and uses released Creed v0.4.1 for drift checking. Independent released-binary validation confirmed validate/diff, idempotent sync, and layered-push rejection.

Reviewer B

APPROVE — generated outputs include central procedures before local Creed guidance; .creed/.outputs/ is ignored rather than tracked. No correctness findings.

[shivros]

Auto-Merge Gate

Confidence: 0.94

The full-SHA layered source, regenerated targets, duplicate-policy removal, v0.4.1 composed-source drift job, and ignored sync metadata directly meet COD-448. Both independent review-panel reviewers approved the change; no unresolved review feedback is present.

Observed checks: Test, Lint, Creed context drift, Secret Scan — successful.

Scope limits: context composition, generated context, and CI drift validation only; no release, deployment, credential, or destructive change.