feat: 初始提交

backend/app/models/prompt.py

@@ -0,0 +1,25 @@
+from datetime import datetime
+from typing import Optional
+
+from sqlalchemy import DateTime, String, Text, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from ..db.base import Base
+
+
+class Prompt(Base):
+    """提示词表，支持后台 CRUD 操作。"""
+
+    __tablename__ = "prompts"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    name: Mapped[str] = mapped_column(String(100), unique=True, nullable=False, index=True)
+    title: Mapped[Optional[str]] = mapped_column(String(255))
+    content: Mapped[str] = mapped_column(Text, nullable=False)
+    tags: Mapped[Optional[str]] = mapped_column(String(255))
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        server_default=func.now(),
+        onupdate=func.now(),
+    )
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())