Initial commit: QMDSearch 分层信息检索服务

- FastAPI + Qdrant + Redis + Ollama 技术栈
- L1→L2→L3→chunk 四层分层检索（dense + sparse RRF 融合）
- 文档三级总结与 2.5 级回退
- query 解析路由与分类
- /admin 管理页面

pyproject.toml

@@ -0,0 +1,41 @@
+[project]
+name = "qmdsearch"
+version = "0.1.0"
+description = "AI Agent 分层信息检索服务"
+requires-python = ">=3.12"
+dependencies = [
+    "fastapi>=0.115.0",
+    "uvicorn[standard]>=0.34.0",
+    "pydantic>=2.10.0",
+    "pydantic-settings>=2.7.0",
+    "qdrant-client>=1.12.0",
+    "redis>=5.2.0",
+    "httpx>=0.28.0",
+    "structlog>=24.4.0",
+    "openai>=1.58.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.3.0",
+    "pytest-asyncio>=0.24.0",
+    "ruff>=0.8.0",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["app"]
+
+[tool.ruff]
+target-version = "py312"
+line-length = 120
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "N", "UP", "B"]
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]