- Use parameterized query for INFORMATION_SCHEMA lookup (SQL injection)
- Add isValidIdentifier() to validate database names before USE statement
- Add password support via BEADS_DOLT_PASSWORD env var
- Remove unused variable declaration
- Add unit tests for identifier validation
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Adds bd doctor --server to diagnose Dolt server mode connections:
- Server reachability (TCP connect to host:port)
- Dolt version check (verifies it is Dolt, not vanilla MySQL)
- Database exists and is accessible
- Schema compatible (can query beads tables)
- Connection pool health metrics
Supports --json for machine-readable output.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
