Captures the brainstorm outcome for adding a Postgres database
alongside the existing JSONL usage logs, ahead of the dashboard
work. Decomposes Phase 5 into three independent cycles (DB first,
then Docker, then dashboard) and locks the schema, transition
strategy (dual-write), hosting (Docker on each VM), backup
approach (pg_dump → GCS), and rollback escape hatch.
No code changes yet — pick up with the writing-plans skill when
returning to Phase 5.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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