[Demo PR] Single-Sprite Tutorial Mode UI Design - #3425
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This was referenced Aug 28, 2026
This reverts commit 3a52364.
The moment a code-judged course's primary goal is reached, the same text is read three times over: the secondary goal is checked against it token by token, it is quoted to the copilot as the evidence for its completion comment, and it stays in the learner's file as the answer they keep. A run's worth of stray indentation went into all three. It is formatted once, before the secondary goal is judged, so the three agree. The edit goes through the editor's history like the Format button's does, so it is one undoable action rather than a silent rewrite. Formatting is a courtesy — an unparsable file or a missing editor must never hold up completion — so a failure is only warned about. And since the format is async, the completion signal now carries the run it belongs to: a learner who hits run again in that window does not get the previous run's verdict. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Point the `repeat` knowledge point at `repeat.webm` instead of the shared demo take. It is the first WebM in the library; `<video>` picks the decoder from the bucket's `video/webm` content type, so nothing else changes. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Related issue
Related to #3412
Background
Several tutorial-mode interfaces and interactions did not match the intended design. Dropdown menus depended on hover behavior, course dialogs needed clearer visual hierarchy, and the ruler controls and surrounding workspace required a more polished and consistent presentation.
Experience changes
Impact scope
Verification