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

packaging/openmesh-server.spec

@@ -0,0 +1,84 @@
+# -*- mode: python ; coding: utf-8 -*-
+"""PyInstaller spec for openmesh-server (one-dir bundle)."""
+
+import os
+import sys
+
+from PyInstaller.utils.hooks import collect_all, collect_data_files, collect_submodules
+
+ROOT = SPECPATH  # spec 文件所在目录就是 packaging
+PROJECT_ROOT = os.path.dirname(ROOT)  # 项目根目录（coworker 包所在处）
+
+# 确保 collect_submodules 能找到 coworker 包
+sys.path.insert(0, PROJECT_ROOT)
+
+IS_WINDOWS = sys.platform == "win32"
+
+hiddenimports = [
+    "coworker.file_upload",
+    "coworker.providers.capabilities",
+]
+datas = []
+binaries = []
+
+for pkg in ("coworker", "aisuite", "mcp", "ddgs", "croniter", "docstring_parser"):
+    try:
+        hiddenimports += collect_submodules(pkg)
+    except Exception:
+        pass
+
+datas += collect_data_files("coworker")
+
+for pkg in ("uvicorn", "certifi", "anyio", "websockets", "pypdf", "pypdfium2",
+            "pdfplumber", "reportlab", "openpyxl", "pandas", "numpy",
+            "playwright", "pytesseract", "markdownify", "beautifulsoup4",
+            "lxml", "defusedxml", "Pillow", "pptx", "docx"):
+    try:
+        d, b, h = collect_all(pkg)
+        datas += d
+        binaries += b
+        hiddenimports += h
+    except Exception:
+        pass
+
+if IS_WINDOWS:
+    try:
+        d, b, h = collect_all("tzdata")
+        datas += d
+        binaries += b
+        hiddenimports += h
+    except Exception:
+        pass
+
+a = Analysis(
+    [os.path.join(ROOT, "server_entry.py")],
+    pathex=[ROOT, PROJECT_ROOT],
+    binaries=binaries,
+    datas=datas,
+    hiddenimports=hiddenimports,
+    hookspath=[],
+    runtime_hooks=[],
+    excludes=["tkinter", "matplotlib", "PyQt5", "PySide6"],
+    noarchive=False,
+)
+pyz = PYZ(a.pure)
+exe = EXE(
+    pyz,
+    a.scripts,
+    [],
+    exclude_binaries=True,
+    name="openmesh-server",
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=False,
+    console=True,
+)
+coll = COLLECT(
+    exe,
+    a.binaries,
+    a.datas,
+    strip=False,
+    upx=False,
+    name="openmesh-server",
+)