fix(ci): resolve mypy type errors in client model and content service

Author: parvenuprompting

app/models/client.py

@@ -28,7 +28,7 @@ class Client(Base):
 
     __tablename__ = "clients"
 
-    id = Column(
+    id: Mapped[uuid.UUID] = mapped_column(
         PGUUID(as_uuid=True),
         primary_key=True,
         default=uuid.uuid4,

app/services/content.py

@@ -89,24 +89,24 @@ async def get_guides(
         self,
         session: AsyncSession,
         current_client: Client,
-        topic_id: UUID,
+        topic_id: UUID | None = None,
         skip: int = 0,
         limit: int = 100,
     ) -> list[Guide]:
-        # Verify topic access first
-        await self.get_topic(session, current_client, topic_id)
+        # Verify topic access first if provided
+        if topic_id:
+            await self.get_topic(session, current_client, topic_id)
 
         # Filter guides
-        query = (
-            select(Guide)
-            .where(
-                Guide.topic_id == topic_id,
-                or_(Guide.client_id.is_(None), Guide.client_id == current_client.id),
-            )
-            .offset(skip)
-            .limit(limit)
+        query = select(Guide).where(
+            or_(Guide.client_id.is_(None), Guide.client_id == current_client.id)
         )
 
+        if topic_id:
+            query = query.where(Guide.topic_id == topic_id)
+
+        query = query.offset(skip).limit(limit)
+
         result = await session.execute(query)
         return list(result.scalars().all())