Phase 1: Test/Prod Database Configurations
- Migration 010: test_* columns on databases table, environment column on request_logs
- DatabasePoolManager: dual-pool strategy (prod + test), getPool(id, env) with fallback
- SqlExecutor, ScriptExecutor, IsolatedScriptExecutor, AqlExecutor: environment param threaded through all execution paths
- dynamicApiController: X-Environment header detection, environment in logging
- databaseManagementController: CRUD for test credentials, testConnection with ?env=test
- Frontend: test env form in DatabaseModal, env toggle in EndpointEditor test panel
Phase 2: Endpoint Versioning
- Migration 011: endpoint_versions table with full snapshots, backfill v1 for existing endpoints
- VersionService: createVersion, saveDraft, publishVersion, rollbackToVersion, getHistory
- endpointController: auto-versioning on update, 6 new version management handlers
- dynamicApiController: draft serving when environment=test and draft exists
- Frontend: Save Draft button, version history panel with publish/rollback actions
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
