Tyrell Build 13 idempotency rereview v5

Reviewed the corrected exact-path LaunchServices fallback and approved resuming the same bounded canary transaction.

• Scope: read-only review on rdmsm4x; no product source, installation, runtime, LaunchServices, process, or production archive mutation.
• Report: /Users/richh/dev/_handoff/tyrell-build13-stale-app-archive-rereview-v5-20260903.md
• Report SHA-256: 0a72da5ba0ade1f7084ab71895133e65d3bce50283845e2d4b333888e3977bd4
• Frozen base/HEAD: ad5a0ba3108045b5de3646893d9ca2a6bdce3770
• Tracked delta SHA-256: 025a0964557d4df7ab14b9a63631486e81550efd0c76affd9ebd5d661eed91e0
• Verification: literal backslash preservation, exact and prefix-collision parsing, syntax, executable archive contract, diff check, and frozen hashes passed.
• Decision: GO to resume the same designated canary; no fleet expansion is implied.
• Outstanding: require resumed canary proof for LaunchServices absence/idempotency, archive verification, current GUI/helper, APIs, and rollback preservation.
• Undo: remove this changelog and the handoff report if these review records are no longer required; neither changed product runtime state.