Found by the PR review:
- The built-in examples showed a finished card and an empty canvas. They
are answered in the browser, never reach the tool handler, and relied
on the final redraw that an earlier commit removed. The example branch
now loads its diagram itself.
- When the request failed while an edit was streaming (a provider error,
a lost connection), its preview stayed on the canvas. The error handler
now restores the diagram from before the preview.
- The model picker could not scroll with the wheel or touch: the settings
dialog blocks those events outside itself, and the picker is rendered
outside it. The popover is modal now.
- A fetch error and the open picker stayed when switching providers.
- Editing a model id kept the old test warning and response time, which
also hid the "may not be able to draw" hint for the new id.
The "Fetch models" button asks the provider for its models (OpenAI-style
/models, Anthropic, Google, Ollama, OpenRouter, Vercel Gateway, AIHubMix)
and shows them in a searchable picker. This replaces the route that only
worked for AIHubMix.
A snapshot of models.dev (MIT) says which models support tool calls.
Models without them get a "no tool calls" badge in the picker and a hint
in the model list, since drawing needs tool calls. Refresh the snapshot
with scripts/update-model-catalog.mjs.
dayuan.jiang