[forhappy]

Linux packaged smoke hangs after Electron quits because the persistent PTY daemon inherits Chromium descriptors, retaining DevTools sockets and browser files. Close those descriptors at the Linux daemon exec boundary while preserving its Node IPC channel. macOS/Windows retain their existing fork path; daemon upgrades originate inside the already isolated Node daemon and deliberately transfer PTY descriptors.

The storage qualifier also reruns native tests without selecting their bundled CLI. Bind both native consumers to the CLI inside the selected package, and honor the existing CRAB_PACKAGED_APP path for qualification outside release/.

Validation:

• Reproduced the Linux hang with actual Electron; fixed build exits promptly, leaves its PTY daemon alive, and retains zero browser-profile files.
• Linux: 23 spawner tests pass. macOS: 46 spawner/mode tests pass.
• Fresh production CLI/sidecar build and unsigned macOS arm64 ZIP succeed.
• Owned native RustFS: all 252 agent tests and all three packaged app smoke tests pass, including encrypted credentials, restart, cloud writes, clone and hydration.
• All 15 packaging/release tests, TypeScript checks, Cargo format and diff checks pass.

Cross-platform publication remains gated on the fresh tagged workflow. Linux VFS coordinator descriptor auditing remains follow-up work within the documented desktop NFS qualification gate.