FA-46104 / Bounded deques / Member archive

Run directory resets cumulative length for each run · case 04

Run directory resets cumulative length for each run.

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

Coalesce adjacent equal deque payloads into [payload,run length] descriptors. Preserve non-adjacent equal runs and report cumulative exclusive run ends.

Why this case matters

Controlled bounded deque implementation model with explicit storage and lifecycle observations.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
separate same values	`[[[4, 2], [5, 1], [4, 2]], [2, 1, 2]]`	`[[[4, 2], [5, 1], [4, 2]], [2, 3, 5]]`	Failed

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