feat: OpenMesh 基础平台与 MD/PDF 转换技能

- 后端: coworker 智能体框架, WS API, 文件上传, 附件处理
- 前端: Open WebUI, 文件全量走 upload API (含 MD/TXT/JSON 等文本类)
- 技能: md-to-office (pandoc + wkhtmltopdf)
- 修复: 上传文件路径丢失, Agent 搜索浪费, 输出文件跑到 uploads/
- 打包: PyInstaller one-dir, 预打包 pandoc/wkhtmltopdf/chromium

surfaces/gui/playwright.live.config.ts

@@ -0,0 +1,29 @@
+import { defineConfig, devices } from "@playwright/test";
+
+// LIVE smoke config — runs against the REAL backend (openworker-server on :8765) and a REAL model.
+// Deliberately separate from playwright.config.ts (testDir ./e2e), so `npm run e2e` and CI never
+// pick these up. Run manually with `npm run e2e:live` when the backend is up and a model is set.
+// Nondeterministic and costs a few model tokens per run — a confidence smoke, not an assertion gate.
+const PORT = 5199;
+
+export default defineConfig({
+  testDir: "./e2e-live",
+  fullyParallel: false,
+  workers: 1,
+  retries: 0,
+  reporter: [["list"]],
+  // Model + tool execution take real time.
+  timeout: 180_000,
+  use: {
+    baseURL: `http://localhost:${PORT}`,
+    trace: "on-first-retry",
+  },
+  projects: [{ name: "chromium", use: { ...devices["Desktop Chrome"] } }],
+  webServer: {
+    // The dev server's default API base is 127.0.0.1:8765 — i.e. the real backend (no mocks here).
+    command: `npm run dev -- --port ${PORT} --strictPort`,
+    url: `http://localhost:${PORT}`,
+    reuseExistingServer: true,
+    timeout: 120_000,
+  },
+});