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/tests/unit/crawler/test_readability_extractor.py

@@ -0,0 +1,104 @@
+# Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+# SPDX-License-Identifier: MIT
+
+from unittest.mock import patch
+
+from src.crawler.readability_extractor import ReadabilityExtractor
+
+
+class TestReadabilityExtractor:
+    @patch("src.crawler.readability_extractor.simple_json_from_html_string")
+    def test_extract_article_with_valid_content(self, mock_simple_json):
+        # Arrange
+        mock_simple_json.return_value = {
+            "title": "Test Article",
+            "content": "<p>Article content</p>",
+        }
+        extractor = ReadabilityExtractor()
+
+        # Act
+        article = extractor.extract_article("<html>test</html>")
+
+        # Assert
+        assert article.title == "Test Article"
+        assert article.html_content == "<p>Article content</p>"
+
+    @patch("src.crawler.readability_extractor.simple_json_from_html_string")
+    def test_extract_article_with_none_content(self, mock_simple_json):
+        # Arrange
+        mock_simple_json.return_value = {
+            "title": "Test Article",
+            "content": None,
+        }
+        extractor = ReadabilityExtractor()
+
+        # Act
+        article = extractor.extract_article("<html>test</html>")
+
+        # Assert
+        assert article.title == "Test Article"
+        assert article.html_content == "<p>No content could be extracted from this page</p>"
+
+    @patch("src.crawler.readability_extractor.simple_json_from_html_string")
+    def test_extract_article_with_empty_content(self, mock_simple_json):
+        # Arrange
+        mock_simple_json.return_value = {
+            "title": "Test Article",
+            "content": "",
+        }
+        extractor = ReadabilityExtractor()
+
+        # Act
+        article = extractor.extract_article("<html>test</html>")
+
+        # Assert
+        assert article.title == "Test Article"
+        assert article.html_content == "<p>No content could be extracted from this page</p>"
+
+    @patch("src.crawler.readability_extractor.simple_json_from_html_string")
+    def test_extract_article_with_whitespace_only_content(self, mock_simple_json):
+        # Arrange
+        mock_simple_json.return_value = {
+            "title": "Test Article",
+            "content": "   \n  \t  ",
+        }
+        extractor = ReadabilityExtractor()
+
+        # Act
+        article = extractor.extract_article("<html>test</html>")
+
+        # Assert
+        assert article.title == "Test Article"
+        assert article.html_content == "<p>No content could be extracted from this page</p>"
+
+    @patch("src.crawler.readability_extractor.simple_json_from_html_string")
+    def test_extract_article_with_none_title(self, mock_simple_json):
+        # Arrange
+        mock_simple_json.return_value = {
+            "title": None,
+            "content": "<p>Article content</p>",
+        }
+        extractor = ReadabilityExtractor()
+
+        # Act
+        article = extractor.extract_article("<html>test</html>")
+
+        # Assert
+        assert article.title == "Untitled"
+        assert article.html_content == "<p>Article content</p>"
+
+    @patch("src.crawler.readability_extractor.simple_json_from_html_string")
+    def test_extract_article_with_empty_title(self, mock_simple_json):
+        # Arrange
+        mock_simple_json.return_value = {
+            "title": "",
+            "content": "<p>Article content</p>",
+        }
+        extractor = ReadabilityExtractor()
+
+        # Act
+        article = extractor.extract_article("<html>test</html>")
+
+        # Assert
+        assert article.title == "Untitled"
+        assert article.html_content == "<p>Article content</p>"