bot-backend 4b0fd10cb0 fix(tradein): #928 cache-key collision, migration-098 band guard, tier-signal note ... M1 (bug): flag-OFF path now caches under (bucket, '_legacy') instead of (bucket, None), preventing stale old-table ratio being served when tier_aware_ratio_enabled is flipped ON without process restart. M2 (guard): add band-drift comment to migration 098 seed + regression test asserting _PPM2_MIN==30000 and asking_ratio_ppm2_max default==1_200_000. M3 (doc): append NOTE(#928) to estimator call-site comment explaining that tier placement uses the pre-anchor radius median, not the same-building Tukey anchor; flags the revisit needed before enabling the flag in production.		2026-06-01 00:13:16 +03:00
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sql	fix(tradein): #928 cache-key collision, migration-098 band guard, tier-signal note	2026-06-01 00:13:16 +03:00