🛡️ Sentinel: [HIGH] Fix Command Injection vulnerability via malicious Git configuration

[tachyon-beep]

🚨 Severity: HIGH
💡 Vulnerability: Command Injection risk via malicious Git configuration. Subprocess calls to git without core.fsmonitor=false can execute arbitrary commands if a malicious .git/config is present in an untrusted directory.
🎯 Impact: If the static analyzer runs on a directory containing a maliciously crafted .git/config file (e.g., cloned from an untrusted source), it could lead to arbitrary local code execution when the analyzer queries git state.
🔧 Fix: Updated subprocess.run calls that invoke git in src/wardline/core/delta.py and src/wardline/core/legis.py to always pass the "-c", "core.fsmonitor=false" arguments (using the predefined _SAFE_GIT_CONFIG).
✅ Verification: Ensure the test suite passes (make test) and that git commands now properly disable core.fsmonitor. Checked with uv run pytest tests/unit/core/test_delta.py and the full make test-cov.

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PR created automatically by Jules for task 7099007833558316659 started by @tachyon-beep

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