feat: 编辑器实时探测并显示已关联虚拟环境

fix: 按系统 ANSI 代码页解码子进程输出，修复中文日志乱码

frontend/e2e/dashboard.spec.ts

@@ -1,5 +1,20 @@
+import { mkdirSync, writeFileSync } from 'node:fs'
+import { join } from 'node:path'
+import { fileURLToPath } from 'node:url'
 import { expect, test, type APIRequestContext } from '@playwright/test'
 
+const venvProject = fileURLToPath(
+  new URL('../../.e2e-data/venv-project', import.meta.url),
+)
+
+function createVenvFixture(): string {
+  const scripts = join(venvProject, '.venv', 'Scripts')
+  mkdirSync(scripts, { recursive: true })
+  writeFileSync(join(venvProject, '.venv', 'pyvenv.cfg'), 'home = C:\\Python\n')
+  writeFileSync(join(scripts, 'python.exe'), '')
+  return venvProject
+}
+
 const taskPayload = {
   id: 'e2e_echo',
   name: 'E2E echo',
@@ -56,6 +71,18 @@ test('manages a task and reads a real run log', async ({ page, request }) => {
     path: 'test-results/dashboard-task-editor.png',
     fullPage: true,
   })
+
+  const workingDir = createVenvFixture()
+  await newTaskDialog.getByLabel(/项目工作目录/).fill(workingDir)
+  await expect(
+    newTaskDialog.locator('.env-status-badge.ok code'),
+  ).toHaveText('.venv\\Scripts\\python.exe')
+  await expect(newTaskDialog.getByText(/已关联虚拟环境/)).toBeVisible()
+  await page.screenshot({
+    path: 'test-results/dashboard-venv-detected.png',
+    fullPage: true,
+  })
+
   const addArgumentButton = newTaskDialog.getByRole('button', {
     name: '+ 添加参数',
   })