Sync Boatstack from Intelligence Flow Labs @ 6f20a566ff2e

[operator-stack-publisher]

What this sync releases

Canonical update ownership supervision

• Reuse one semantic ownership projection across update admission, mutation verification, staging, and preview, including marker-bounded Cursor, Claude, and Gemini interceptors.
• Validate branch and workspace preconditions before creating a durable operation so rejected setup cannot consume retry budget or collide with the corrected attempt.
• Preserve the underlying rollback reason in the operation receipt and cover the reported stale-interceptor upgrade end to end.

Projection provenance

Generated from operatorstack/intelligence-flow@6f20a566ff2e5cbc5893273627cc019dcff9de16.
Review provenance, tests, examples, and context-cost changes before merging.