282d2ef450
- Created joinir/patterns/ subdirectory - Extracted Pattern 1: pattern1_minimal.rs (Simple While) - Extracted Pattern 2: pattern2_with_break.rs (Loop with Break) - Extracted Pattern 3: pattern3_with_if_phi.rs (Loop with If-Else PHI) - Created patterns/mod.rs dispatcher - Removed ~410 lines from main control_flow.rs - Zero breaking changes, all tests pass