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

.github/workflows/ci.yml

@@ -0,0 +1,59 @@
+# App CI — the coworker Python suite, the GUI unit tests, and the hermetic
+# Playwright e2e suite (mocked /v1 + WS; no model or network needed).
+
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  pytest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - name: Install
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e ".[messaging,dev,bedrock]"
+      - name: Test
+        run: pytest tests -q
+
+  gui-unit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: surfaces/gui/package-lock.json
+      - name: npm ci
+        working-directory: surfaces/gui
+        run: npm ci
+      - name: Typecheck
+        working-directory: surfaces/gui
+        run: npx tsc --noEmit
+      - name: Unit tests
+        working-directory: surfaces/gui
+        run: npm test
+
+  gui-e2e:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: surfaces/gui/package-lock.json
+      - name: npm ci
+        working-directory: surfaces/gui
+        run: npm ci
+      - name: Install Playwright browsers
+        working-directory: surfaces/gui
+        run: npx playwright install --with-deps chromium
+      - name: e2e
+        working-directory: surfaces/gui
+        run: npm run e2e