See /Users/henry/hermes-wiki/concepts/postgres-schema-migration.md for full content.
Trigger
Queen is designing a PG schema, picking a migration tool (golang-migrate / goose / Atlas), or writing a zero-downtime migration.
See /Users/henry/hermes-wiki/concepts/postgres-schema-migration.md for the full wiki concept.
Full description
Design PostgreSQL schemas, write zero-downtime migrations, choose migration tools (golang-migrate/goose/Atlas), or tune indexes/queries/PgBouncer.
Pointer
Wiki: /Users/henry/hermes-wiki/concepts/postgres-schema-migration.md
Sourced from: golang-migrate/migrate; pressly/goose; ariga/atlas
Promotion criteria
Per skill-write-policy: this stub stays until the same workflow succeeds in 2+ real tasks. Then expand stub to full SKILL.md with numbered steps, copy-paste commands, and verification.