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/src-tauri/tauri.conf.json

@@ -0,0 +1,58 @@
+{
+  "$schema": "https://schema.tauri.app/config/2",
+  "productName": "OpenWorker",
+  "version": "0.2.1",
+  "identifier": "com.openworker.desktop",
+  "build": {
+    "frontendDist": "../dist",
+    "devUrl": "http://localhost:1420",
+    "beforeDevCommand": "npm run dev",
+    "beforeBuildCommand": "npm run build"
+  },
+  "app": {
+    "withGlobalTauri": true,
+    "windows": [],
+    "security": {
+      "csp": null
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": "all",
+    "publisher": "OpenWorker",
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ],
+    "resources": {
+      "binaries/sidecar": "sidecar"
+    },
+    "macOS": {
+      "entitlements": "entitlements.plist",
+      "minimumSystemVersion": "12.0"
+    },
+    "windows": {
+      "webviewInstallMode": {
+        "type": "downloadBootstrapper"
+      },
+      "nsis": {
+        "installMode": "currentUser"
+      }
+    }
+  },
+  "plugins": {
+    "updater": {
+      "endpoints": [
+        "https://download.openworker.com/latest.json",
+        "https://github.com/andrewyng/openworker/releases/latest/download/latest.json"
+      ],
+      "pubkey": "dW50cnVzdGVkIGNvbW1lbnQ6IG1pbmlzaWduIHB1YmxpYyBrZXk6IDVCNzEzRjY5OTkzNUNBNjkKUldScHlqV1phVDl4VzBvTnFLLytzaDkzNVd3WWNuUm8yNE95WTBFNnBtcGF1RENxeTRuNVhQeloK",
+      "windows": {
+        "installMode": "passive"
+      }
+    }
+  }
+}