feat: initial project structure

- Add FastAPI app with paper browsing UI and REST API
- Add crawler service and database models
- Add scripts for DB init and manual crawl
- Add docs (api-and-ui, data-model, services)
- Add requirements and project config

pyproject.toml

@@ -0,0 +1,30 @@
+[project]
+name = "hf-daily-papers"
+version = "0.1.0"
+description = "HuggingFace Daily Papers — 中文论文导览站"
+requires-python = ">=3.12"
+dependencies = [
+    "fastapi>=0.115",
+    "uvicorn[standard]>=0.34",
+    "sqlalchemy>=2.0",
+    "httpx>=0.28",
+    "jinja2>=3.1",
+    "python-multipart>=0.0.18",
+    "pydantic>=2.0",
+    "pydantic-settings>=2.0",
+    "typer>=0.15",
+    "python-dotenv>=1.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.0",
+    "pytest-asyncio>=0.24",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["app"]