1. Author handle map: known X accounts (MetaDAO, Anthropic, SpaceX etc.)
count as 1 keyword match toward domain routing threshold. Lightweight,
no URL parsing.
2. Conversation archives now write to conversations/ subdir instead of
top-level staging dir. The cron only moves top-level *.md to queue,
so conversations never enter the extraction pipeline. Skip happens
at write time, not at batch-extract read time — eliminates wasted I/O
every 15 minutes.
Pentagon-Agent: Epimetheus <3D35839A-7722-4740-B93D-51157F7D5E70>