feat(models): add UserAgentCatalog model

backend/src/models/__init__.py

@@ -16,6 +16,7 @@ from models.schedule_subscriptions import ScheduleSubscription
 from models.todos import Todo
 from models.todo_sources import TodoSource
 from models.user_agents import UserAgent
+from models.user_agent_catalog import UserAgentCatalog
 
 __all__ = [
     "AgentChatMessage",
@@ -35,4 +36,5 @@ __all__ = [
     "Todo",
     "TodoSource",
     "UserAgent",
+    "UserAgentCatalog",
 ]

backend/src/models/user_agent_catalog.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from sqlalchemy import ForeignKey, String
+from sqlalchemy.dialects.postgresql import JSONB, UUID
+from sqlalchemy.orm import Mapped, mapped_column
+
+from core.db.base import Base, TimestampMixin
+
+
+class UserAgentCatalog(TimestampMixin, Base):
+    __tablename__: str = "user_agent_catalog"
+
+    agent_type: Mapped[str] = mapped_column(
+        String(20),
+        primary_key=True,
+    )
+    llm_id: Mapped[str] = mapped_column(
+        UUID(as_uuid=True),
+        ForeignKey("llms.id", ondelete="RESTRICT"),
+        nullable=False,
+    )
+    status: Mapped[str] = mapped_column(
+        String(20),
+        nullable=False,
+    )
+    config: Mapped[dict] = mapped_column(
+        JSONB,
+        nullable=False,
+        server_default="{}",
+    )