Wave 1: Add StructuredLogger and review topics inference
Task #1: StructuredLogger class (modules/structured_logger.py)
- LogEntry dataclass with timestamp, level, category, metrics, network
- Thread-safe storage with automatic pruning at 10k entries
- Level methods: debug(), info(), warn(), error(), fatal()
- Backward-compatible log() method for migration
- Filter methods: get_logs_by_category(), get_logs_by_level()
Task #16: Review topics inference (modules/scraper_clean.py)
- get_topic_variants(): Generate word variants (plural, -ing, -ed forms)
- infer_review_topics(): Match review text to topic keywords
- Word boundary matching to avoid false positives
- Integrated into scrape_reviews() to add 'topics' field to reviews
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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