fix(studio): use shell mode for spawn on Windows

apps/cli/src/commands/results/eval-runner.ts

@@ -279,6 +279,8 @@ export function registerEvalRoutes(
         cwd,
         stdio: ['ignore', 'pipe', 'pipe'],
         env: { ...process.env },
+        // Windows requires shell:true to execute .cmd/.bat wrappers (e.g. npm-installed agentv.cmd)
+        shell: process.platform === 'win32',
       });
 
       run.process = child;
@@ -440,6 +442,7 @@ export function registerEvalRoutes(
         cwd,
         stdio: ['ignore', 'pipe', 'pipe'],
         env: { ...process.env },
+        shell: process.platform === 'win32',
       });
 
       run.process = child;

packages/core/test/evaluation/content-preprocessor.test.ts

@@ -42,8 +42,9 @@ describe('content preprocessors', () => {
     await writeFile(
       scriptPath,
       `const fs = require('node:fs');
+const path = require('node:path');
 const payload = JSON.parse(fs.readFileSync(0, 'utf8'));
-console.log('sheet:' + payload.original_path.split('/').pop());`,
+console.log('sheet:' + path.basename(payload.original_path));`,
       'utf8',
     );
 

packages/core/test/evaluation/llm-grader-multimodal.test.ts

@@ -374,8 +374,9 @@ describe('LlmGraderEvaluator multimodal', () => {
     await writeFile(
       scriptPath,
       `const fs = require('node:fs');
+const path = require('node:path');
 const payload = JSON.parse(fs.readFileSync(0, 'utf8'));
-console.log('spreadsheet:' + payload.original_path.split('/').pop());`,
+console.log('spreadsheet:' + path.basename(payload.original_path));`,
       'utf8',
     );
 

packages/core/test/evaluation/loaders/evaluator-parser.test.ts

@@ -1571,7 +1571,7 @@ assertions:
         [tempDir],
         'test-5',
       ),
-    ).rejects.toThrow(/\.agentv\/templates\/missing-template\.yaml/);
+    ).rejects.toThrow(/\.agentv[/\\]templates[/\\]missing-template\.yaml/);
   });
 });