fix(search): how-describe lexical admit (P31, 115/180)

[sdntsng]

Summary

P30 frozen pin was 114/180. Remaining SH miss conv-42-q123 (How does Nate describe the stuffed animal he got for Joanna?) stores gold as a first-person leftover (It's a stuffed animal to remind you of the good vibes) but live /recall never admitted it. Compiler Nate describes Y stamps plus person ILIKE flooded the pool; keeping got then ILIKE-flooded to 76 hits (gold recency 12 in the 22-hit stuffed|animal pool).

This increment is the same generic English mechanism as P30, for how-does/did/do-X-describe-Y queries: drop describe* structure tokens, drop capitalized person tokens when other object tokens remain, drop got/gets after person filtering, and gate filtered token-admit / related-fact / evidence-set covering to what-made or how-describe. Destress, instrument-purpose, and which-year covering stay on the unfiltered token set.

Pin: skip-ingest locomo-s0-diag-mh-135-p31b-product-recall-s1-909042 is 115/180 (0.639), +1 / −0 vs P30. Named recovery: stuffed-animal good vibes. MH 18 / OD 4 / SH 63 / temporal 30. First P31 180 (a6117e) was 114/180 net 0 (girlfriend hybrid not in memory flake) and is not a pin.

Not a LoCoMo-named product rule. Do not drop Joanna from all search. Do not drop advice. Turtle-care and camping-peaceful golds did not recover (no turtle/care tokens; peaceful not stored).

Changes

• internal/memory/recall.go: looksHowDescribeQuery / looksFirstPersonLeftoverQuery. Destress and instrument-purpose are not how-describe.
• internal/memory/service.go: drop describe* from lexical tokens; reuse person-token filter for first-person leftover queries; drop got after person filter; gate filtered admit/covering to what-made and how-describe.
• Tests: stuffed-animal query drops describe/nate/joanna/got and keeps stuffed/animal; destress keeps Melanie; what-made P30 test still holds.
• Pin docs: locomo-s0-diag-mh-135-p31-20260825.md, cycle-closeout, handover.

Test plan

• gofmt clean on touched files
• go test ./internal/memory/ and go test ./... / go vet ./...
• Live q123 hybrid cites good vibes / remind (gold_rank=9)
• How-describe holds: snake under bed, island, kayaking sunset, electronic elements
• P30 q138 still cites push; P28 22/22 including health-year 2021, destress pottery, paint Saturday, Boston, renovate 2022, smartwatch enumerate reminder, girlfriend live hold
• First 180 p31 114/180 net 0 (not a pin)
• Skip-ingest 180 p31b 115/180 net +1 vs P30 — pin

Linear / tracking

• ENG-176 (MH) / parent ENG-168
• Frozen pin: P31 115/180 (98d8931 / docs 86d2a65)
• PR: fix(search): how-describe lexical admit (P31, 115/180) #147

Risk / follow-ups

• 115/180 is still 47 short of 90% (162/180). Next isolated ranking: Gina advice (do not drop advice), veterans party (do not drop May), Joanna writing.
• Turtle care and camping peaceful are out of scope (gold tokens / not stored).
• Do not revive P29 attended-echo ranking. Do not merge P27 (fix(recall): instrument-purpose leftover covering over help flood #143) or P29 (P29: demote single-token attended compiler echoes (ranking only) #145) or S1–S5 compiler/answer/alias/KU (split from mixed S0 PR) #133.