Also run `tht memory solved-search "<question>" --json`: similar already-solved
   questions show which tables comparable questions used. Cite relevant precedents
   (session id + tables) to the reviewer as CONTEXT — they are reference material,
   NOT decisions to apply; their filters/periods may not transfer.
   Run `tht memory rules "<question>" --session <id> --json` for reusable join rules
   and explained errors. Read `memory-review.md` when a rule is relevant or a reviewer
   approves a reusable correction. Present the applicable rule and its Memory ID in
   the existing table/join proposal; that gate decides its use for this question.