feat(api): project initialization

api/app/config.py

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+import os
+
+# Database configuration
+DATABASE_URL = "sqlite:///./joke.db"
+
+# JWT configuration
+JWT_SECRET_KEY = os.getenv("JWT_SECRET_KEY", "your-secret-key-change-in-production")
+JWT_ALGORITHM = "HS256"
+JWT_EXPIRATION_HOURS = 24
+
+# API configuration
+API_TITLE = "笑话大全 API"
+API_VERSION = "1.0.0"

api/app/database.py

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+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+from app.config import DATABASE_URL
+
+# Create engine
+engine = create_engine(
+    DATABASE_URL,
+    connect_args={"check_same_thread": False}
+)
+
+# Create SessionLocal class
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+# Create Base class
+Base = declarative_base()
+
+
+def get_db():
+    """Dependency to get database session."""
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

api/main.py

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+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.config import API_TITLE, API_VERSION
+
+# Create FastAPI application
+app = FastAPI(title=API_TITLE, version=API_VERSION)
+
+# Configure CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+@app.get("/")
+def root():
+    return {"message": "欢迎使用笑话大全 API"}
+
+
+@app.get("/health")
+def health_check():
+    return {"status": "healthy"}

api/requirements.txt

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+fastapi==0.109.0
+uvicorn[standard]==0.27.0
+sqlalchemy==2.0.25
+pydantic==2.5.3
+python-jose[cryptography]==3.3.0
+passlib[bcrypt]==1.7.4
+python-multipart==0.0.6