feat: effect feedback loop, evergreen topics, merged search, content quality checks
- Topic selection: add historical effect analysis (framework/strategy/title
performance weighting when stats available), add 2-3 evergreen topics
alongside trending ones
- Step 3: merge material collection and content enhancement into single
search pass, with framework-specific search strategies
- Step 5: split verification into writing quality (A) and content quality (B),
add checks for hook strength, quote density, angle sharpness per framework
- Fix exemplar category mapping for new frameworks (opinion → hot-take,
retrospective → story-emotional)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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