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CODE_REVIEW_FRE-330.md

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+# Code Review: FRE-330 - Validation & Quality
+
+## Verdict: APPROVED with suggestions
+
+Reviewed all 5 validation files:
+- `__init__.py` (41 lines)
+- `pipeline.py` (186 lines)
+- `audio_quality_checker.py` (413 lines)
+- `content_validator.py` (410 lines)
+- `final_report_generator.py` (316 lines)
+
+## Strengths
+✅ Comprehensive audio quality checking (corruption, silence, loudness, sample rate)
+✅ Content validation ensuring text-to-audio mapping
+✅ Good use of dataclasses for validation issues
+✅ Proper error codes and severity levels
+✅ Both JSON and text report generation
+✅ CLI entry point for standalone validation
+
+## Suggestions (non-blocking)
+
+### 1. audio_quality_checker.py:358 - Import inside method
+```python
+def _calculate_rms(self, audio: AudioSegment) -> float:
+    import math  # Should be at module level
+```
+
+### 2. content_validator.py:185 - Indentation issue
+Line 185 has inconsistent indentation (extra spaces).
+
+### 3. audio_quality_checker.py:377-396 - LUFS estimation
+`estimate_lufs` uses simplified RMS-based estimation, not true E-EBU R128. Consider using pyloudnorm for production accuracy.
+
+### 4. final_report_generator.py:174 - Type ignore
+```python
+dict(issue.details)  # type: ignore
+```
+Should properly type this instead of using type: ignore.
+
+## Overall Assessment
+Well-designed validation pipeline with comprehensive checks. The suggestions are minor.