codeant-ai-for-open-source[bot] commented on PR #38859:
URL: https://github.com/apache/superset/pull/38859#issuecomment-4129845611
## **Sequence Diagram**
This PR updates MCP save flows to re-load dashboards and charts using the
active db session instead of DAO lookups, preventing stale session failures
after commit in multi-tenant setups. It also limits top-level error handling to
expected exception types for clearer failure responses.
```mermaid
sequenceDiagram
participant Client
participant MCP Tool
participant Command
participant DB Session
participant Serializer
Client->>MCP Tool: Request to generate or update dashboard or chart
MCP Tool->>Command: Save or update entity
Command-->>MCP Tool: Return saved entity
MCP Tool->>DB Session: Requery same entity with eager relations
alt Requery succeeds
DB Session-->>MCP Tool: Session bound entity
else Requery fails
DB Session-->>MCP Tool: Database error
MCP Tool->>MCP Tool: Fallback to saved entity
end
MCP Tool->>Serializer: Serialize entity for response
MCP Tool-->>Client: Return success or specific handled error
```
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