Found by the second PR review:
- After a streamed edit, an older render of the stream stored the edit's
original diagram again, and the next failed request (no quota, a lost
connection) put that old diagram back on the canvas. The tool handler
now marks its call as handled, so the preview code leaves it alone.
- An edit applied before the UI showed an earlier broken edit's error was
erased when that error undid its preview, or was built on that preview.
The handler now starts from the diagram before all unhandled previews,
and reads the diagram state that updates at once.
- A failed or stopped display_diagram left its half drawn diagram on the
canvas. Its preview is undone now, like an edit's.
- "New chat" cleared a chat that could not be saved (storage full).
- The settings dialog showed a model list, a fetch error or a test result
on the provider that was opened after the request started, and marked a
model id changed during the test as tested.
- A tool call with broken JSON was shown as cut off by the output limit.
- History entries and session thumbnails could pair with a later diagram
when draw.io answered an export late.
- A server model saved before non-ASCII provider names got into the id
was reset to the default model.
- Fall back to the default server model when a saved one disappears
- Sync model config across tabs
- Validation uses the base path and sends the access code
- Model ids edited as drafts (no empty, duplicate or padded ids)
- Credential changes reset validation; stale validation results are dropped
- Admin: generateId over HTTP, env-locked group switches, discard and toggle fixes,
clearing a secret field keeps the saved key, first provider not auto-default when .env sets AI_MODEL
- Model selector items use unique values
dayuan.jiang