🛡️ Sentinel: [security improvement]

[NoWon1]

🚨 Severity: MEDIUM
💡 Vulnerability: Bare except: blocks that catch BaseException, potentially swallowing critical system-level signals like KeyboardInterrupt.
🎯 Impact: Can lead to localized Denial of Service (DoS) and reliability risks.
🔧 Fix: Replaced all bare except: blocks with except Exception: to only catch standard program errors.
✅ Verification: Ran pytest test_security.py and bandit to ensure no bare excepts remain.

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PR created automatically by Jules for task 8970587901793487569 started by @NoWon1

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