fix: Resolve MCP installation issues and enhance path resolution

- Fixed API endpoint mismatches in mcp-manager.js to ensure global install/update buttons function correctly.
- Corrected undefined function references in mcp-manager.js for project installation.
- Refactored event handling to eliminate global scope pollution in mcp-manager.js.
- Added comprehensive debugging guide for MCP installation issues.
- Implemented a session path resolver to infer content types from filenames and paths, improving usability.
- Introduced tests for embeddings improvements in init and status commands to verify functionality.

ccw/src/core/routes/codexlens-routes.ts

@@ -192,9 +192,9 @@ export async function handleCodexLensRoutes(ctx: RouteContext): Promise<boolean>
         const args = ['clean'];
         if (all) {
           args.push('--all');
-        }
-        if (path) {
-          args.push('--path', path);
+        } else if (path) {
+          // Path is passed as a positional argument, not as a flag
+          args.push(path);
         }
         args.push('--json');