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Enter a dependency bulkhead: Unrelated dependencies share a bulkhead accounting key · case 04

The bulkhead admission operation is admitted even though unrelated dependencies share a bulkhead accounting key.

Member previewVariant 4 · 3 implementations · 9 checks per implementation

Case contract

Return a Boolean admission decision for enter a dependency bulkhead. The record r must satisfy all of: r['active_capacity'][0] < r['active_capacity'][1]; r['queue_capacity'][0] < r['queue_capacity'][1]; r['queue_deadline'][0] < r['queue_deadline'][1]; r['priority_reservation'][0] or r['priority_reservation'][1] < r['priority_reservation'][2]-r['priority_reservation'][3]; r['isolation_key'][0] == r['isolation_key'][1]. Extra tracing fields are ignored; validation does not mutate the record.

Why this case matters

A deterministic local contract for reliability. Each negative fixture violates exactly one invariant. No transport timing, persistence, cryptographic verification, or full protocol implementation is claimed.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
Unrelated dependencies share a bulkhead accounting key	`true`	`false`	Failed

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