chemavx
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bot/data/news.py (new): - NewsClient with in-memory cache (TTL=4h) to stay within 100 req/day limit - _build_query(): strips dates, punctuation and stopwords from market question - _score_headlines(): keyword-based pos/neg vote per article, averaged ∈ [-1, +1] - Degrades to 0.0 on missing key, 403 quota, or network error bot/strategy/bayesian.py: - BayesianStrategy(news=NewsClient) — optional, backwards compatible - Signal 4: GNews sentiment applied as direct log-odds shift (weight=1.5) so a ±1.0 sentiment score moves a 50% prior to 82%/18% - +0.10 confidence boost when news signal is present - NEWS_LOGODDS_WEIGHT constant documented at module level bot/main.py: - Instantiate NewsClient, pass to BayesianStrategy, close in finally block Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>