feat(memory-api): add end user management and enhance memory API endpoints

- Add end_user_controller with unauthenticated endpoint for creating end users
- Implement get_or_create_end_user logic to handle duplicate end users by other_id
- Register end_user_controller router in main controller initialization
- Add list_memory_configs endpoint to retrieve all workspace memory configurations
- Update MemoryWriteRequest and MemoryReadRequest to make config_id required field
- Refactor memory API endpoints to parse request body directly instead of using Body parameter
- Add CreateEndUserRequest and CreateEndUserResponse schemas for end user creation
- Add ListConfigsResponse schema for configs listing endpoint
- Remove unused config_id and llm_model_id parameters from Neo4j write operation
- Update .gitignore to exclude redbear-mem-metrics and pitch-deck directories

api/app/schemas/memory_api_schema.py

@@ -21,7 +21,7 @@ class MemoryWriteRequest(BaseModel):
     """
     end_user_id: str = Field(..., description="End user ID (required)")
     message: str = Field(..., description="Message content to store")
-    config_id: Optional[str] = Field(None, description="Memory configuration ID")
+    config_id: str = Field(..., description="Memory configuration ID (required)")
     storage_type: str = Field("neo4j", description="Storage type: neo4j or rag")
     user_rag_memory_id: Optional[str] = Field(None, description="RAG memory ID")
 
@@ -68,7 +68,7 @@ class MemoryReadRequest(BaseModel):
         "0", 
         description="Search mode: 0=verify, 1=direct, 2=context"
     )
-    config_id: Optional[str] = Field(None, description="Memory configuration ID")
+    config_id: str = Field(..., description="Memory configuration ID (required)")
     storage_type: str = Field("neo4j", description="Storage type: neo4j or rag")
     user_rag_memory_id: Optional[str] = Field(None, description="RAG memory ID")
 
@@ -132,3 +132,79 @@ class MemoryReadResponse(BaseModel):
         description="Intermediate retrieval outputs"
     )
     end_user_id: str = Field(..., description="End user ID")
+
+
+class CreateEndUserRequest(BaseModel):
+    """Request schema for creating an end user.
+    
+    Attributes:
+        workspace_id: Workspace ID (required)
+        other_id: External user identifier (required)
+        other_name: Display name for the end user
+    """
+    workspace_id: str = Field(..., description="Workspace ID (required)")
+    other_id: str = Field(..., description="External user identifier (required)")
+    other_name: Optional[str] = Field("", description="Display name")
+
+    @field_validator("workspace_id")
+    @classmethod
+    def validate_workspace_id(cls, v: str) -> str:
+        """Validate that workspace_id is not empty."""
+        if not v or not v.strip():
+            raise ValueError("workspace_id is required and cannot be empty")
+        return v.strip()
+
+    @field_validator("other_id")
+    @classmethod
+    def validate_other_id(cls, v: str) -> str:
+        """Validate that other_id is not empty."""
+        if not v or not v.strip():
+            raise ValueError("other_id is required and cannot be empty")
+        return v.strip()
+
+
+class CreateEndUserResponse(BaseModel):
+    """Response schema for end user creation.
+    
+    Attributes:
+        id: Created end user UUID
+        other_id: External user identifier
+        other_name: Display name
+        workspace_id: Workspace the user belongs to
+    """
+    id: str = Field(..., description="End user UUID")
+    other_id: str = Field(..., description="External user identifier")
+    other_name: str = Field("", description="Display name")
+    workspace_id: str = Field(..., description="Workspace ID")
+
+
+class MemoryConfigItem(BaseModel):
+    """Schema for a single memory config in the list response.
+    
+    Attributes:
+        config_id: Configuration UUID
+        config_name: Configuration name
+        config_desc: Configuration description
+        is_default: Whether this is the workspace default config
+        scene_name: Associated ontology scene name
+        created_at: Creation timestamp
+        updated_at: Last update timestamp
+    """
+    config_id: str = Field(..., description="Configuration ID")
+    config_name: str = Field(..., description="Configuration name")
+    config_desc: Optional[str] = Field(None, description="Configuration description")
+    is_default: bool = Field(False, description="Whether this is the workspace default")
+    scene_name: Optional[str] = Field(None, description="Associated ontology scene name")
+    created_at: Optional[str] = Field(None, description="Creation timestamp")
+    updated_at: Optional[str] = Field(None, description="Last update timestamp")
+
+
+class ListConfigsResponse(BaseModel):
+    """Response schema for listing memory configs.
+    
+    Attributes:
+        configs: List of memory config items
+        total: Total number of configs
+    """
+    configs: List[MemoryConfigItem] = Field(default_factory=list, description="List of configs")
+    total: int = Field(0, description="Total number of configs")