FA-34269 / Notification interfaces / Member archive

Single-surface notification display ownership: close-surface from displaying · case 04

The close-surface event leaves a notification in standby instead of releasing.

Member previewVariant 4 · 3 implementations · 39 checks per implementation

Case contract

Single-surface notification display ownership is a bounded visual-notification workflow with mutable policy state {'token': 5, 'owner': 'local', 'mounted': False, 'released': []}. Its default transition relation is {('standby', 'request-display'): 'claiming', ('claiming', 'lease-granted'): 'displaying', ('claiming', 'lease-denied'): 'standby', ('displaying', 'lease-revoked'): 'withdrawing', ('withdrawing', 'unmounted'): 'standby', ('displaying', 'close-surface'): 'releasing', ('releasing', 'release-confirmed'): 'standby', ('claiming', 'cancel-display'): 'claim-canceled', ('claim-canceled', 'late-lease-granted'): 'releasing', ('standby', 'foreign-release'): 'standby'}; domain inputs can suppress or redirect transitions and update policy fields, as specified in solve. Different-generation events are inert. Batches apply in order. Optional observe returns the selected policy field alongside the phase.

Why this case matters

Visual notification lifecycle ordering can leave an inbox or toast showing the wrong actionable state even when transport succeeds.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
displaying / close-surface	`"standby"`	`"releasing"`	Failed

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