FA-36509 / Tab interfaces / Member archive

Tab decoration measurement: title truncation decision · case 04

The tab workspace reports an incorrect title truncation decision.

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

Tab label layout reserves distinct icon, dirty marker, close button and padding footprints before truncating the title; absent decorations consume no width.

Why this case matters

Offline tab/panel workspace behavior; no browser or desktop framework is emulated.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
workspace regression 0	`[80, 40, 88, 64, 288, false]`	`[80, 40, 88, 64, 288, true]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

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

Member access is invitation-based. Sign in with your invited account to inspect the sources.