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/reviewer-paused.spec.ts

@@ -0,0 +1,61 @@
+// §8.4 breaker surfacing (owner ask 2026-08-24): when the Auto-Approve reviewer pauses
+// itself after 5 straight denials, the transcript gets a notice AND the composer's mode
+// chip says "· paused" — quietly, until the turn ends or an ask_user answer resets it.
+import { expect } from "@playwright/test";
+import { test } from "./fixtures";
+
+test("reviewer pause shows a transcript notice and marks the mode chip", async ({ page }) => {
+  await page.goto("/");
+  await page.getByText("Draft the launch note").first().click();
+
+  // Switch the session into Auto-approve (entry gated on the settings flag).
+  await page.getByRole("button", { name: "Mode", exact: true }).click();
+  await page.getByTestId("mode-menu").getByText("Auto-approve").click();
+
+  const box = page.getByPlaceholder(/Ask the coworker/);
+  await box.fill("trip the reviewer");
+  await box.press("Enter");
+
+  // The tripping deny carries the pause: notice inline, "· paused" on the chip.
+  await expect(page.getByText(/Auto-approve is paused for the rest of this turn/)).toBeVisible();
+  await expect(page.getByTestId("mode-paused")).toBeVisible();
+  await expect(page.getByRole("button", { name: "Mode", exact: true })).toContainText("paused");
+});
+
+test("an unsure escalation shows the reviewer's hesitation on the card", async ({ page }) => {
+  await page.goto("/");
+  await page.getByText("Draft the launch note").first().click();
+  const box = page.getByPlaceholder(/Ask the coworker/);
+  await box.fill("run an unsure tool");
+  await box.press("Enter");
+
+  const note = page.getByTestId("approval-reviewer-unsure");
+  await expect(note).toBeVisible();
+  await expect(note).toContainText("reviewer wasn\u2019t sure: This runs a newly created script");
+});
+
+test("mode notices: full explainer once, one-line markers after", async ({ page }) => {
+  await page.goto("/");
+  await page.getByText("Draft the launch note").first().click();
+
+  const pickMode = async (label: string) => {
+    await page.getByRole("button", { name: "Mode", exact: true }).click();
+    await page.getByTestId("mode-menu").getByText(label, { exact: false }).first().click();
+  };
+
+  // First entry into Auto-approve: the full (new, shorter) explainer.
+  await pickMode("Auto-approve");
+  await expect(page.getByText("Auto-approve is on.")).toBeVisible();
+  await expect(
+    page.getByText(/uses a model to let routine actions through without asking/),
+  ).toBeVisible();
+
+  // Later switches: one-line markers only — the banner never repeats.
+  await pickMode("Ask for approval");
+  await expect(page.getByText("Ask for approval is on.")).toBeVisible();
+  await pickMode("Auto-approve");
+  await expect(page.getByText("Auto-approve is on.")).toHaveCount(2); // title + marker
+  await expect(
+    page.getByText(/uses a model to let routine actions through without asking/),
+  ).toHaveCount(1);
+});