🛡️ Sentinel: [MEDIUM] Fix unsafe path bridging in StatusSocket.swift

[acebytes]

🚨 Severity: MEDIUM
💡 Vulnerability: Unsafe path bridging in StatusSocket.swift by passing a Swift String directly to POSIX fchmodat.
🎯 Impact: Potential memory issues or incorrect path resolution due to lack of guaranteed null-termination and memory stability during the C function call.
🔧 Fix: Used URL(fileURLWithPath:).withUnsafeFileSystemRepresentation to safely obtain a stable C-string pointer before calling fchmodat.
✅ Verification: Verified the fix by checking git diff --staged and running swift test.

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PR created automatically by Jules for task 11855565336227280850 started by @acebytes

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