feat: Enhance idea retrieval to include the latest generation and support user-specific ideas not tied to a project, while also improving asset storage uniqueness and adjusting generation cancellation timeout.

api/service/idea_service.py

@@ -7,14 +7,14 @@ class IdeaService:
     def __init__(self, dao: DAO):
         self.dao = dao
 
-    async def create_idea(self, name: str, description: Optional[str], project_id: str, user_id: str) -> Idea:
+    async def create_idea(self, name: str, description: Optional[str], project_id: Optional[str], user_id: str) -> Idea:
         idea = Idea(name=name, description=description, project_id=project_id, created_by=user_id)
         idea_id = await self.dao.ideas.create_idea(idea)
         idea.id = idea_id
         return idea
 
-    async def get_ideas(self, project_id: str, limit: int = 20, offset: int = 0) -> List[Idea]:
-        return await self.dao.ideas.get_ideas(project_id, limit, offset)
+    async def get_ideas(self, project_id: Optional[str], user_id: str, limit: int = 20, offset: int = 0) -> List[dict]:
+        return await self.dao.ideas.get_ideas(project_id, user_id, limit, offset)
 
     async def get_idea(self, idea_id: str) -> Optional[Idea]:
         return await self.dao.ideas.get_idea(idea_id)