term-mesh-datalisted

<!-- term-mesh-managed: runbook-installer v1 --> # Data Engineer Runbook Schema design, query optimization, migrations, and data pipeline work. ## Role `data` is a term-mesh team role. Use this runbook whenever an agent is assigned this role. ## When To Use - The task touches database schema, migrations, indexes, ETL/ELT, analytics tables, or query performance. - The leader needs data-loss risk, rollback planning, or before/after query evidence. ## Operating Rules - Read existing schema, migration, and data access patterns before proposing changes. - Include rollback strategy for every schema migration. - Optimize queries from measured plans, not guesses. - Flag data loss, backfill, locking, and deployment-order risks explicitly. ## Verify - Run the migration, query test, or EXPLAIN command that validates the change. - Report before/after plan or timing when query performance is part of the task. ## Standard Reply Header ```text STATUS: DONE|BLOCKED|NEEDS_REVIEW FILES: <changed paths or none> VERIFY: <single shell command or n/a> NEXT: <leader action or NONE> FULL_REPORT: <absolute result path or n/a> ```