fix(macos): suppress Swift compiler warnings

[qeude]

Summary

• Replace unsafe force cast with unsafeDowncast in AXFocusOperations for proper type-safe handling of CFBoolean
• Fix sendability warning in AXFrameCoordinator by reconstructing the application element locally instead of capturing it across async boundaries
• Update closure syntax in MacOSPlatform+WindowSnapshotDiscovery to clarify closure scope
• Replace unsafe String(cString:) with explicit null-terminator handling in WindowSnapshotRefreshPolicy to handle C strings safely

Testing

• Swift build completes without warnings: python3 script/verify.py local
• No functional behavior changes; warnings only

Note

Fix Swift compiler warnings in DefiMacOS accessibility code

• Removes a forced cast in AXFocusOperations.readFocused by using an unchecked downcast after the existing CF type-identifier check (AXFocusOperations.swift)
• Fixes appBundleIdentifier(processID:) to decode the non-null portion of the proc_pidpath buffer as UTF-8, so bundle lookup gets a clean executable path (WindowSnapshotRefreshPolicy.swift)
• Reworks the queued restoration closure in AXFrameCoordinator to capture the restoration token, recreate the application accessibility element from the process ID at execution time, and record failed restorations against that element (AXFrameCoordinator.swift)
• Adds parentheses around a closure in the window-retry deadline check (MacOSPlatform+WindowSnapshotDiscovery.swift)

^{Macroscope summarized 50dce2d.}

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge; no actionable issue was found.

Summary

This PR removes Swift warnings in four macOS files.

• macOS helpers keep their behavior while spelling out warning-prone code.

No actionable issues were found. Build and desktop checks were not run in this Linux review environment.

_{Reviews (1) · Last reviewed commit: "fix(macos): suppress Swift compiler warn..." · Reviewed by Greptile}

[macroscopeapp]

Approvability

Verdict: Approved at 50dce2d

Macroscope's review found this PR approvable — This is a narrowly scoped macOS maintenance patch that removes compiler warnings while preserving existing focus, restoration, retry, and bundle-discovery flows. The only runtime-touching edits are localized substitutions whose effects are directly visible in the diff, with no new capability or broad integration introduced.

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