🛡️ Sentinel: [HIGH] Fix Type Confusion in IP range scanning

[ManupaKDU]

🚨 Severity: HIGH
💡 Vulnerability: Type Confusion (CWE-843) where bool types bypassed numeric bounds checks since bool inherits from int in Python, allowing True/False to evaluate as 0.0.0.1 and 0.0.0.0.
🎯 Impact: An attacker could bypass integer bounds and range limitations (which expect IP representations) resulting in scanning arbitrary loops or local 0 network endpoints if boolean values are evaluated instead of expected integer logic.
🔧 Fix: Explicitly reject bool types before integer bound validation logic to securely stop type confusion logic bypass.
✅ Verification: A test (test_main_block_type_confusion_bool) was added simulating this boolean-injection vector, and the execution is confirmed to block it and emit the intended TypeError cleanly without triggering downstream network requests or failing validation checks unexpectedly.

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PR created automatically by Jules for task 9499414189374559661 started by @ManupaKDU

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