fix: Add shell:true for Windows PATH resolution in ccw-litellm status check

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

ccw/src/core/routes/litellm-api-routes.ts

@@ -581,7 +581,8 @@ export async function handleLiteLLMApiRoutes(ctx: RouteContext): Promise<boolean
         try {
           const { stdout } = await execAsync(`${pythonExe} -c "${pythonCode}"`, {
             timeout: 5000,
-            windowsHide: true
+            windowsHide: true,
+            shell: true,  // Required for Windows PATH resolution
           });
           const version = stdout.trim();
           if (version) {