feat: 增加内容生成配置管理

ai_knowledge_base_v2/apps/backend/app/models/__init__.py

@@ -1,5 +1,5 @@
 from app.models.admin import Admin, Role
-from app.models.ai_config import ModelConfig, Prompt, SystemConfig
+from app.models.ai_config import ContentGenerationConfig, ModelConfig, Prompt, SystemConfig
 from app.models.base import Base
 from app.models.chat import ChatMessage, ChatSession, TopicSession
 from app.models.entitlement import EntitlementPlan, UserEntitlement, UserEntitlementLog
@@ -31,6 +31,7 @@ __all__ = [
     "Base",
     "ChatMessage",
     "ChatSession",
+    "ContentGenerationConfig",
     "EntitlementPlan",
     "GrowthProfileRevision",
     "Knowledge",

ai_knowledge_base_v2/apps/backend/app/models/ai_config.py

@@ -23,6 +23,24 @@ class Prompt(Base):
     updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)
 
 
+class ContentGenerationConfig(Base):
+    __tablename__ = "sys_content_generation_config"
+    __table_args__ = (
+        Index("ix_content_generation_type_updated", "config_type", "updated_at", "id"),
+    )
+
+    id: Mapped[int] = mapped_column(
+        BigInteger().with_variant(Integer, "sqlite"), primary_key=True, autoincrement=True
+    )
+    config_type: Mapped[str] = mapped_column(String(30), nullable=False)
+    template_content: Mapped[str] = mapped_column(Text, nullable=False)
+    instruction_content: Mapped[str] = mapped_column(Text, nullable=False)
+    change_type: Mapped[str] = mapped_column(String(20), default="save", nullable=False)
+    source_config_id: Mapped[int | None] = mapped_column(BigInteger, nullable=True)
+    updated_by: Mapped[int | None] = mapped_column(BigInteger, nullable=True)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), nullable=False)
+
+
 class ModelConfig(Base):
     __tablename__ = "sys_model"