Boost review recall with import verification, normalization checks, and error return detection

Key prompt changes:
- Step 2: verify new imports/callbacks exist (grep for definitions)
- Step 2: trace into initialized components for internal race conditions
- Frequently missed patterns: #9 MISSING DEFINITIONS, #10 QUERY NORMALIZATION
- System prompt: report silently ignored error returns
- Sweep: check for missing definitions and loop completeness
- Reduce FPs: don't report code organization issues when framework loads by name

Results: F1=79.5% P=96.7% R=67.4% (29 TP, 7 FP, 14 FN from 30 candidates)