ChatGPT MultiChat v2.2.0

Hardening release for safe parallel automation. Adds exact BaseRef/BaseSha worktree creation, optional CanonicalRef integration proof, dynamic Android resource identities by serial/AVD, hierarchical conservative Android lock conflicts, explicit full-operation resource wrappers, persistent external-executor leases with heartbeat/TTL, fail-closed ACTIVE/STALE/MISMATCH/UNKNOWN lease handling, exact managed-worktree identity checks, hardened SAFE cleanup, post-execution session validator, external process lease wrapper, expanded hardening/concurrency tests, and a fully custom-drawn Desktop Commander toggle without native hover artifacts.