Resume Boatstack operations without duplicate retries

[bigboateng]

Summary

• add a Git-common durable operation journal with fingerprint-bound authorization, single-use leases, persisted retry budgets, reconciliation states, and read-only status projection
• supervise managed host mutations across Cursor, Claude, Codex, and Gemini pre/post events, and make repair budgets survive turns and host restarts
• move PR and Boatstack-update publication behind deterministic controllers that recover interrupted pushes and PR creation without duplication
• update canonical workflow, artifacts, failure recovery, host contracts, generated adapters, troubleshooting, supervisory documentation, and the append-only release note

Verification

• go test ./...
• go vet ./...
• go test -race ./... -run TestOperationReceiptsAreSharedAcrossLinkedWorktreesAndSerialized\|TestHostFailureEventsRequireReconciliation -count=1
• python3 -m unittest discover -s tests -p test_\*.py
• python3 scripts/release_notes.py validate --root boatstack-distribution/release-notes
• python3 scripts/release_notes.py check-policy --repo ../.. --base origin/main --head HEAD
• git diff --check

No live browser E2E was run; deterministic host-event fixtures cover transport interruption and completion behavior.