feat(deepdata): 引入修改密码、文件预览组件与清洗算子增强，deepflow 改名为 deep-flow

本次同步 09-12 至 09-28 的代码变更，主要内容：

新增功能
- 修改密码：后端新增 ChangePasswordRequest DTO 与UserController/UserService
  对应接口，前端新增 ChangePasswordDialog 并在 Header 接入入口
- 文件预览组件重构：file-preview 目录拆分出 VideoPreview（支持 blobUrl 直传）、
  ImagePreview、AudioPreview，index.tsx 统一调度各类型预览器
- 新增 my_ops 算子模块：markitdown_parser、mineru_pdf_parser、text_quality_evaluator
- 新增 tools/minio-file-server MinIO 文件服务

功能增强
- 数据清洗：cleaning_task_service/scheduler/routes 重构，
  data_juicer_executor 与 wrapper 增强，OperatorTable/LogsTable/TaskDetail 同步调整
- 数据标注：annotation sync.py、project.py 接口与schema 更新
- 数据采集、算子市场、首页与菜单路由相关页面调整
- DataJuicer 算子接入（useOperatorOperations、dj_ops_schema）

结构调整
- deepflow/ 更名为 deep-flow/（419 个文件重命名）
- 新增 helm 部署编排、GitHub Actions 之外的自建镜像构建脚本

未纳入本次提交
- scripts-backup/、runtime/python-executor-backup/、components_backup/（备份目录）
- *.backup*、__pycache__ 产物
- zh_core_web_sm-3.8.0-py3-none-any.whl（46MB 构建产物）
- DataX/（内嵌独立仓库，远程亦未收录其源码）

deep-flow/docs/mcp_integrations.md

@@ -0,0 +1,88 @@
+# MCP Integrations（Beta）
+
+Now This feature is diabled by default. You can enable it by setting the environment ENABLE_MCP_SERVER_CONFIGURATION to be true
+
+> [!WARNING]
+> Please enable this feature before securing your frond-end and back-end in a managed environment.
+> Otherwise, you system could be compromised.
+
+This feature is diabled by default. You can enable it by setting the environment ENABLE_MCP_SERVER_CONFIGURATION
+Please enable this feature before securing your frond-end and back-end in an internal environment.q
+
+## Example of MCP Server Configuration
+
+```json
+{
+  "mcpServers": {
+    "mcp-github-trending": {
+      "transport": "stdio",
+      "command": "uvx",
+      "args": [
+          "mcp-github-trending"
+      ]
+    }
+  }
+}
+```
+
+## APIs
+
+### Get metadata of MCP Server
+
+**POST /api/mcp/server/metadata**
+
+For `stdio` type:
+```json
+{
+  "transport": "stdio",
+  "command": "npx",
+  "args": ["-y", "tavily-mcp@0.1.3"],
+  "env": {"TAVILY_API_KEY":  "tvly-dev-xxx"}
+}
+```
+
+For `sse` type:
+```json
+{
+  "transport": "sse",
+  "url": "http://localhost:3000/sse",
+  "headers": {
+    "API_KEY": "value"
+  }
+}
+```
+
+For `streamable_http` type:
+```json
+{
+  "transport": "streamable_http",
+  "url": "http://localhost:3000/mcp",
+  "headers": {
+    "API_KEY": "value"
+  }
+}
+```
+
+### Chat Stream
+
+**POST /api/chat/stream**
+
+```json
+{
+  ...
+  "mcp_settings": {
+    "servers": {
+      "mcp-github-trending": {
+        "transport": "stdio",
+        "command": "uvx",
+        "args": ["mcp-github-trending"],
+        "env": {
+          "MCP_SERVER_ID": "mcp-github-trending"
+        },
+        "enabled_tools": ["get_github_trending_repositories"],
+        "add_to_agents": ["researcher"]
+      }
+    }
+  },
+}
+```