Initial commit: Daily News App

企業內部新聞彙整與分析系統
- 自動新聞抓取 (Digitimes, 經濟日報, 工商時報)
- AI 智慧摘要 (OpenAI/Claude/Ollama)
- 群組管理與訂閱通知
- 已清理 Python 快取檔案

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/db/session.py

@@ -0,0 +1,49 @@
+"""
+資料庫連線與 Session 管理
+"""
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker, Session, DeclarativeBase
+from sqlalchemy.pool import QueuePool
+from typing import Generator
+
+from app.core.config import settings
+
+
+# 建立引擎
+# 建立引擎
+connect_args = {}
+if settings.database_url.startswith("sqlite"):
+    connect_args["check_same_thread"] = False
+
+engine = create_engine(
+    settings.database_url,
+    poolclass=QueuePool,
+    pool_size=10,
+    max_overflow=20,
+    pool_pre_ping=True,
+    echo=settings.debug,
+    connect_args=connect_args
+)
+
+# Session 工廠
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+
+class Base(DeclarativeBase):
+    """SQLAlchemy 基礎類別"""
+    pass
+
+
+def get_db() -> Generator[Session, None, None]:
+    """取得資料庫 Session（依賴注入用）"""
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+
+def init_db() -> None:
+    """初始化資料庫（建立所有表）"""
+    from app.models import user, news, group, report, interaction, system
+    Base.metadata.create_all(bind=engine)