gate: scale garbage-title tolerance with corpus size

gate: trailing-price needs a 2+ digit amount; short-title floor 3

fix(gate): enforce publish verdict only on reliable-GT quiz items

feat(gate): productionize answer-quality quiz as hard publish threshold

catalog: per-run feed snapshot kills ingest/gate race; universal GT + generic ingest tier

gate: treat unicode/NBSP whitespace as printable (not binary)

Universal structured-catalog query engine + ingestion persistence fix

fix: tsc_pk gate residuals — entity-decode headings, drop price<=0, 4-char card titles

crawl_gate.py: post-crawl verification gate (invariants + Shopify GT diff + auto-quiz)