Fix macOS updater cleanup dispatch

[enaboapps]

Closes #564

Root cause

The async updater command called macOS disconnect cleanup from a Tauri worker thread, but the CoreBluetooth runtime is thread-local to the main thread. Installation therefore stopped before applying a downloaded update with The macOS runtime is not initialized.

Changes

• dispatch worker-thread Disconnect and updater cleanup through the awaited main-thread helper
• keep tray cleanup on its existing synchronous main-thread path
• finish overlays, shared session state, activity, and event cleanup only after platform cleanup succeeds
• preserve downloaded bytes and Install retry behavior on cleanup or installer failure

Validation

• Node.js 24.13.0; Rust 1.97.1
• npm run lint
• npm test (55 frontend tests and 5 feed tests)
• npm run build
• cargo fmt --manifest-path src-tauri/Cargo.toml --check
• cargo clippy --manifest-path src-tauri/Cargo.toml --all-targets -- -D warnings
• cargo test --manifest-path src-tauri/Cargo.toml (129 unit tests and 2 configuration tests)
• npm run macos:run Disconnect smoke test pending on the physical Mac before release

[greptile-apps]

Greptile Summary

This change runs platform-specific disconnection on Tauri’s main thread before completing shared application cleanup, and retains downloaded updater data when cleanup or installation fails.

The reported session-cleanup issue was disproved by exercising the claimed subscribe-between-cleanup ordering. On macOS, the subscription callback changes only the Bluetooth connection state and does not set connected_device_name; therefore the subsequent cleanup cannot erase a newly connected device name. The tray intentionally renders this state as “Device connected” and keeps Disconnect available.

Confidence Score: 5/5

Merge-safe based on the verified disconnect-state behavior; no actionable defects remain.

There are no final findings. Focused checks covered the claimed interleaving and confirmed that the macOS subscription path cannot produce the stated name-clearing failure.

Files Needing Attention: No files require follow-up.

_{Reviews (1): Last reviewed commit: "Fix macOS updater cleanup dispatch" | Re-trigger Greptile}