Verify installed production dependency closure and packaged executable modes across supported targets. Preserve platform-owned launch behavior and drain independent local durability work once before ordinary exit.
Validation: affected native/runtime owners, shutdown/lifecycle cases, typechecks, smoke, and a normal visible macOS start/quit.
Sync the audited release_1.6.6 increment through the open-source boundary.\n\nIncludes task-scoped permission grants, safer relaunch and local access handling, batched Office reads and structural checks, shared prompt refinements, builtin resources, and adapted regression coverage.
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