🛡️ Sentinel: [CRITICAL] Fix Git argument injection

[xbmc4lyfe]

🚨 Severity: CRITICAL
💡 Vulnerability: Git argument injection due to unvalidated branch and base names starting with a hyphen.
🎯 Impact: An attacker could execute arbitrary Git options or flags, potentially leading to command injection or unauthorized actions.
🔧 Fix: Added _validate_git_ref to ensure references do not start with a hyphen before being passed to Git commands.
✅ Verification: Syntax checks, static analysis, and test suite have passed.

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PR created automatically by Jules for task 17399583756143385668 started by @xbmc4lyfe

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📥 Commits

Reviewing files that changed from the base of the PR and between 7b35ed2 and e9323d1.

📒 Files selected for processing (2)

• .jules/sentinel.md
• ralph_loop/git_ops.py

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch sentinel-git-argument-injection-17399583756143385668

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch sentinel-git-argument-injection-17399583756143385668

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