- Fix workflow_runs.status DEFAULT from 'running' to 'pending' in Postgres
(migration 018) to match SQLite and actual code flow
- Rebuild 000_combined.sql as clean final schema (7 tables, no stale columns,
correct defaults, all indexes)
- Update all docs to present SQLite as the default, zero-setup option
- Mark PostgreSQL as optional/advanced in README, CLAUDE.md, and guides
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
