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/e2e/mcp-oauth.spec.ts

@@ -0,0 +1,37 @@
+// MCP OAuth quick-add (first server: Granola): the Custom · MCP group on the
+// Connectors page offers a curated Connect card; connecting adds the server, kicks
+// off the browser sign-in (Signing in…), and the poll flips the row to Live.
+// Sign out (detail page) returns it to Needs sign-in.
+import { expect } from "@playwright/test";
+import { test } from "./fixtures";
+
+async function openConnectors(page) {
+  await page.goto("/");
+  await page.getByTestId("account-row").click();
+  await page.getByRole("button", { name: "Connectors", exact: true }).click();
+}
+
+test("granola: quick-add card → sign-in flow → Live → sign out", async ({ page }) => {
+  await openConnectors(page);
+
+  // Curated OFFER renders among the Available connectors while granola isn't
+  // configured (never inside Custom · MCP — a row there means a server you own).
+  const preset = page.getByTestId("mcp-preset-granola");
+  await expect(preset).toContainText("Granola");
+  await expect(preset).toContainText("Meeting notes");
+
+  // Connect: adds the server, starts the browser sign-in, and lands STRAIGHT on
+  // the detail page (OPE-136: the connect-time tool review ceremony lives there).
+  await preset.getByRole("button", { name: "Connect" }).click();
+  const detail = page.getByTestId("mcp-detail-granola");
+  await expect(detail).toContainText("Signing in…");
+
+  // The status poll flips the mock to connected with its 6 tools.
+  await expect(detail).toContainText("Ready", { timeout: 10_000 });
+  await expect(detail).toContainText("6 tools");
+
+  // Sign out forgets tokens; the chip needs sign-in again.
+  await detail.getByTestId("mcp-signout-granola").click();
+  await expect(detail).toContainText("Needs sign-in");
+  await expect(detail.getByTestId("mcp-signin-granola")).toBeVisible();
+});