CRITICAL: Third CoT leak discovered - meta-reasoning with first-person and causal explanations.
Real-world leak: "Since no files were changed and this is a small change set for a single commit, I need to analyze what kind of work was done."
Root causes:
1. First-person reasoning patterns not caught: "I need to", "I should", "I must"
2. Causal/meta reasoning not caught: "Since no files", "Since the", "Since this"
3. Fallback cleaning didn't re-check for remaining reasoning in cleaned text
Fixes:
- Added pattern: `r'i\s+(need|should|will|must)\s+to'` (first-person)
- Added pattern: `r'since\s+(no|the|this)'` (meta-reasoning/causal)
- Added pattern: `r'no\s+files\s+(were|are)'` (meta about changes)
- Enhanced fallback cleaning: verify cleaned text has no remaining reasoning
Pattern evolution across 3 commits:
1. Initial patterns: "let's", "step by step", numbered lists
2. Added: "let me" variant (space between let and me)
3. Added: first-person reasoning, meta-reasoning, double-check cleaned text
All 5 CoT regression tests passing:
- test_extract_commit_message_with_reasoning ✓
- test_extract_commit_message_regression_cot_leak ✓
- test_extract_commit_message_numbered_lists ✓
- test_extract_commit_message_let_me_think ✓
- test_extract_commit_message_meta_reasoning ✓
Version: 0.1.3 → 0.1.4
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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