Add comprehensive tests for tokenizer, performance benchmarks, and TreeSitter parser functionality

- Implemented unit tests for the Tokenizer class, covering various text inputs, edge cases, and fallback mechanisms.
- Created performance benchmarks comparing tiktoken and pure Python implementations for token counting.
- Developed extensive tests for TreeSitterSymbolParser across Python, JavaScript, and TypeScript, ensuring accurate symbol extraction and parsing.
- Added configuration documentation for MCP integration and custom prompts, enhancing usability and flexibility.
- Introduced a refactor script for GraphAnalyzer to streamline future improvements.

ccw/src/core/routes/mcp-templates-db.ts

@@ -7,15 +7,14 @@ import Database from 'better-sqlite3';
 import { existsSync, mkdirSync } from 'fs';
 import { join, dirname } from 'path';
 import { homedir } from 'os';
+import { StoragePaths, ensureStorageDir } from '../../config/storage-paths.js';
 
-// Database path
-const DB_DIR = join(homedir(), '.ccw');
-const DB_PATH = join(DB_DIR, 'mcp-templates.db');
+// Database path - uses centralized storage
+const DB_DIR = StoragePaths.global.databases();
+const DB_PATH = StoragePaths.global.mcpTemplates();
 
 // Ensure database directory exists
-if (!existsSync(DB_DIR)) {
-  mkdirSync(DB_DIR, { recursive: true });
-}
+ensureStorageDir(DB_DIR);
 
 // Initialize database connection
 let db: Database.Database | null = null;