Add comprehensive tests for ast-grep and tree-sitter relationship extraction

- Introduced test suite for AstGrepPythonProcessor covering pattern definitions, parsing, and relationship extraction.
- Added comparison tests between tree-sitter and ast-grep for consistency in relationship extraction.
- Implemented tests for ast-grep binding module to verify functionality and availability.
- Ensured tests cover various scenarios including inheritance, function calls, and imports.

ccw/src/cli.ts

@@ -263,6 +263,10 @@ export function run(argv: string[]): void {
     .option('--output <file>', 'Output file path for export')
     .option('--overwrite', 'Overwrite existing memories when importing')
     .option('--prefix <prefix>', 'Add prefix to imported memory IDs')
+    .option('--unified', 'Use unified vector+FTS search (for search subcommand)')
+    .option('--topK <n>', 'Max results for unified search', '20')
+    .option('--minScore <n>', 'Min relevance score for unified search', '0')
+    .option('--category <cat>', 'Filter by category for unified search')
     .action((subcommand, args, options) => coreMemoryCommand(subcommand, args, options));
 
   // Hook command - CLI endpoint for Claude Code hooks