FA-8912 / Selection controls / Member archive

Rating preview and committed value: Hovering commits a rating before activation · case 02

Hovering commits a rating before activation.

Member previewVariant 2 · 3 implementations · 10 checks per implementation

Case contract

Hover changes preview only; leaving or Escape discards preview; activation commits and clears preview; repeated activation clears only when allowed; readonly ignores interaction and has no preview.

Why this case matters

A deterministic model of rating preview and committed value; this isolates one interface invariant without requiring a browser.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
hover	`[4, null]`	`[2, 4]`	Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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