feat: v1.2.0 - 图片去重与管理、微信机器人优化、搜索设置可配置

主要功能:
- 图片上传时 OCR 内容去重（3个上传端点统一使用公共函数 _check_ocr_duplicate）
- 图片管理 Tab：展示所有图片、手动删除、一键去重
- 搜索结果详情弹窗增加删除按钮（带确认弹窗）
- 图片管理卡片点击查看详情（复用 showOcrDetailModal）
- 搜索限制和 LLM 批量判断数量可通过网站设置
- MiniMax API 调用添加 reasoning_split=True
- 企业微信机器人：WebSocket 长连接、图片搜索、配置化搜索数量
- 版本号升级至 1.2.0

pyproject.toml

@@ -0,0 +1,62 @@
+[build-system]
+requires = ["setuptools>=75.0", "wheel"]
+build-backend = "setuptools.backends._legacy:_Backend"
+
+[project]
+name = "edu-brain"
+version = "1.2.0"
+description = "中文直播教育知识库系统 - 基于向量检索的知识管理平台"
+readme = "README.md"
+requires-python = ">=3.11"
+license = {text = "MIT"}
+authors = [
+    {name = "EduBrain Team"},
+]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Framework :: FastAPI",
+    "Programming Language :: Python :: 3.11",
+    "Topic :: Education",
+]
+
+dependencies = [
+    "fastapi>=0.115.0",
+    "uvicorn[standard]>=0.32.0",
+    "pydantic-settings>=2.6.0",
+    "sqlalchemy[asyncio]>=2.0.36",
+    "asyncpg>=0.30.0",
+    "alembic>=1.14.0",
+    "pgvector>=0.3.6",
+    "openai>=1.58.0",
+    "zhipuai>=2.4.0",
+    "dashscope>=1.20.0",
+    "sentence-transformers>=3.3.0",
+    "paddleocr>=2.9.0",
+    "mcp[cli]>=1.2.0",
+    "frontmatter>=3.2.0",
+    "python-multipart>=0.0.18",
+    "numpy>=1.26.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.0.0",
+    "pytest-asyncio>=0.24.0",
+    "httpx>=0.28.0",
+    "ruff>=0.8.0",
+]
+
+[project.scripts]
+edu-brain = "app.main:app"
+edu-brain-mcp = "app.mcp.server:run_mcp_server"
+
+[tool.ruff]
+target-version = "py311"
+line-length = 120
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "N", "W", "UP"]
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]