Add memory management APIs for OpenViking: list, read, write, and delete memories

memory_system_api/schemas.py

@@ -7,6 +7,7 @@ from pydantic import BaseModel, Field
 
 
 OperationStatus = Literal["success", "partial_success", "failed"]
+MemoryWriteMode = Literal["create", "replace", "append"]
 
 
 class MessageIngestRequest(BaseModel):
@@ -54,6 +55,15 @@ class ProfileRequest(BaseModel):
     level: int = Field(default=2, ge=0)
 
 
+class MemoryWriteRequest(BaseModel):
+    user_id: str = Field(min_length=1)
+    user_key: str = Field(min_length=1)
+    uri: str = Field(min_length=1)
+    content: str
+    mode: MemoryWriteMode = "create"
+    wait: bool = True
+
+
 class ResourceUploadRequest(BaseModel):
     user_id: str = Field(min_length=1)
     user_key: str = Field(min_length=1)
@@ -116,6 +126,12 @@ class ProfileResponse(BaseModel):
     backends: dict[str, BackendStatus]
 
 
+class MemoryOperationResponse(BaseModel):
+    status: OperationStatus
+    memory: Any = None
+    backends: dict[str, BackendStatus]
+
+
 class ResourceMutationResponse(BaseModel):
     status: OperationStatus
     resource: Any = None