Task “Read chapter” + 25, rule 2/remaining/3. Expected: Prepare 2, Focus 20, Reflect 3.
Account-free · client-side · no storage · no network
Study Sprint Interaction Lab
Configure one transparent rule, run normal and missing-input cases, inject a controlled state bug, and trace what the browser did. This lab is a course-owned full-credit route when an own-app or coding environment is unavailable.
Privacy boundary: use fictional task text only. This page sends nothing and stores nothing. Do not enter names, grades, health details, credentials, private schedules, protected course content, or real records.
2. Observe the result
Initial state
Commit an expected result before running a test.
| Stage | Current evidence |
|---|---|
| Input | No run yet. |
| Event | No run yet. |
| Validate | No run yet. |
| Rule | No run yet. |
| State | No run yet. |
| Output | No run yet. |
Three required cases
Predict first. Run second. Record expected and actual separately.
Blank Task + 25. Expected: linked Task message, focus Task, preserve 25, render no plan.
After 15 minutes, change to 45. Expected: new 2/40/3 result replaces the old result without duplication.
Architecture boundary
This lab demonstrates local intelligence only.
Required Topic 9 route. Browser input, event, transparent transformation, state, and output. No network or secret.
Concept only. Adds a network request, response/status checks, source questions, CORS (the browser rule that lets a page read another site’s data only when that site allows it), downtime, and new privacy decisions.
Not a Topic 9 build. A private key never belongs in browser-delivered code; an approved server-side boundary would be required.