🛡️ Sentinel: [Medium] Fix Deadlock Vulnerability in Process Output Pipes

[acebytes]

🚨 Severity: Medium
💡 Vulnerability: Process output pipes are read after waiting for process exit (or inside termination handler), creating a deadlock if output exceeds OS buffer limits.
🎯 Impact: Can cause background processes to hang indefinitely and app freezing.
🔧 Fix: Read pipes using readabilityHandler concurrently with the process running to avoid deadlocks.
✅ Verification: Changes can be reviewed to verify the pattern is now correct and deadlock is eliminated.

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PR created automatically by Jules for task 15193621524852201114 started by @acebytes

[google-labs-jules]

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[acebytes]

Duplicate of #227 for the Tier2 SnapshotCleanup deadlock fix. Also note this PR accidentally committed Sources/Cacheout/Intervention/Tier2Interventions.swift.orig (908 added lines is the .orig backup, not the real change). Closing in favor of #227's clean diff.

[google-labs-jules]

Duplicate of #227 for the Tier2 SnapshotCleanup deadlock fix. Also note this PR accidentally committed Sources/Cacheout/Intervention/Tier2Interventions.swift.orig (908 added lines is the .orig backup, not the real change). Closing in favor of #227's clean diff.

Understood. Acknowledging that this work is now obsolete and stopping work on this task. I have also deleted the accidentally committed .orig file.