chore: clean up development artifacts and update .gitignore

- Remove AI agent coordination files and progress tracking
- Remove temporary test results and generated artifacts
- Remove diagnostic test scripts from src/scripts/
- Remove development planning documents
- Update .gitignore to exclude test artifacts
- Clean up 53 temporary files total

tests/utils/DATABASE_UTILITIES_SUMMARY.md

@@ -1,128 +0,0 @@
-# Database Testing Utilities Summary
-
-## Overview
-We've created comprehensive database testing utilities for the n8n-mcp project that provide a complete toolkit for database-related testing scenarios.
-
-## Created Files
-
-### 1. `/tests/utils/database-utils.ts`
-The main utilities file containing:
-- **createTestDatabase()** - Creates test databases (in-memory or file-based)
-- **seedTestNodes()** - Seeds test node data
-- **seedTestTemplates()** - Seeds test template data
-- **createTestNode()** - Factory for creating test nodes
-- **createTestTemplate()** - Factory for creating test templates
-- **resetDatabase()** - Clears and reinitializes database
-- **createDatabaseSnapshot()** - Creates database state snapshots
-- **restoreDatabaseSnapshot()** - Restores from snapshots
-- **loadFixtures()** - Loads data from JSON fixtures
-- **dbHelpers** - Collection of common database operations
-- **createMockDatabaseAdapter()** - Creates mock adapter for unit tests
-- **withTransaction()** - Transaction testing helper
-- **measureDatabaseOperation()** - Performance measurement helper
-
-### 2. `/tests/unit/utils/database-utils.test.ts`
-Comprehensive unit tests covering all utility functions with 22 test cases.
-
-### 3. `/tests/fixtures/database/test-nodes.json`
-Example fixture file showing the correct format for nodes and templates.
-
-### 4. `/tests/examples/using-database-utils.test.ts`
-Practical examples showing how to use the utilities in real test scenarios.
-
-### 5. `/tests/integration/database-integration.test.ts`
-Integration test examples demonstrating complex database operations.
-
-### 6. `/tests/utils/README.md`
-Documentation explaining how to use the database utilities.
-
-## Key Features
-
-### 1. Flexible Database Creation
-```typescript
-// In-memory for unit tests (fast, isolated)
-const testDb = await createTestDatabase();
-
-// File-based for integration tests
-const testDb = await createTestDatabase({
-  inMemory: false,
-  dbPath: './test.db'
-});
-```
-
-### 2. Easy Data Seeding
-```typescript
-// Seed with defaults
-await seedTestNodes(testDb.nodeRepository);
-
-// Seed with custom data
-await seedTestNodes(testDb.nodeRepository, [
-  { nodeType: 'custom.node', displayName: 'Custom' }
-]);
-```
-
-### 3. State Management
-```typescript
-// Create snapshot
-const snapshot = await createDatabaseSnapshot(testDb.adapter);
-
-// Do risky operations...
-
-// Restore if needed
-await restoreDatabaseSnapshot(testDb.adapter, snapshot);
-```
-
-### 4. Fixture Support
-```typescript
-// Load complex scenarios from JSON
-await loadFixtures(testDb.adapter, './fixtures/scenario.json');
-```
-
-### 5. Helper Functions
-```typescript
-// Common operations
-dbHelpers.countRows(adapter, 'nodes');
-dbHelpers.nodeExists(adapter, 'node-type');
-dbHelpers.getAllNodeTypes(adapter);
-dbHelpers.clearTable(adapter, 'templates');
-```
-
-## TypeScript Support
-All utilities are fully typed with proper interfaces:
-- `TestDatabase`
-- `TestDatabaseOptions`
-- `DatabaseSnapshot`
-
-## Performance Considerations
-- In-memory databases for unit tests (milliseconds)
-- File-based databases for integration tests
-- Transaction support for atomic operations
-- Performance measurement utilities included
-
-## Best Practices
-1. Always cleanup databases after tests
-2. Use in-memory for unit tests
-3. Use snapshots for complex state management
-4. Keep fixtures versioned with your tests
-5. Test both empty and populated database states
-
-## Integration with Existing Code
-The utilities work seamlessly with:
-- `DatabaseAdapter` from the main codebase
-- `NodeRepository` for node operations
-- `TemplateRepository` for template operations
-- All existing database schemas
-
-## Testing Coverage
-- ✅ All utilities have comprehensive unit tests
-- ✅ Integration test examples provided
-- ✅ Performance testing included
-- ✅ Transaction testing supported
-- ✅ Mock adapter for isolated unit tests
-
-## Usage in CI/CD
-The utilities support:
-- Parallel test execution (isolated databases)
-- Consistent test data across runs
-- Fast execution with in-memory databases
-- No external dependencies required