HEL02

AWS

Content insights, second wave: date dimension in message_example_stat (CH migration 0036 — recreates the rollup table and its 3 MVs; the accumulated rollup is reset and statistics start collecting from scratch — no backfill by decision), working date range filter, pool_id filter and pool tabs contract (pools in the response), per-pool Favorites buffers (Django migration push_messages 0035 + manual DDL on the hel02 Postgres replica — logical replication does not carry DDL). Order: statistics → migrations → manager. Breaking change for the old frontend: GET pool_optimisation now returns a list of per-pool buffers. Rollback: manager tag rollback requires wiping the favorites buffers; do not roll back the migrations.