- Implement FindAllDatabases() to scan hierarchy for all .beads directories - Add DatabaseInfo struct with path, beads dir, and issue count - Add warnMultipleDatabases() with formatted warning display - Show active database with ▶ marker and issue counts - Add comprehensive tests for multi-database detection - Document warning and solutions in TROUBLESHOOTING.md - Prevent confusion and database pollution from accidental duplicates Amp-Thread-ID: https://ampcode.com/threads/T-4941975f-2686-40d0-bc12-aabf38a05890 Co-authored-by: Amp <amp@ampcode.com>