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Calendar resize preserves every member independently of occupancy or old capacity · case 05

The bounded calendar rehash certificate reports an incorrect members.

Member previewVariant 5 · 3 implementations · 7 checks per implementation

Case contract

Calendar queue resize receives events [id,tick], origin, old width/count and new width/count. Reinsert every event using new floor-divided virtual position; preserve arrival order within each destination. Report new bucket contents, moved ids, old aliases split by resize, occupancy, new interval span, and member count.

Why this case matters

This isolates an internal heap representation or priority-structure invariant using deterministic finite records.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression certificate 2	`{"buckets": [["0", "1", "4"], ["2"], ["3"], []], "cycle_span": 12, "members": 3, "moved": ["2", "3"], "occupancy": [3, 1, 1, 0], "split_aliases": [["0", "2"], ["0", "3"], ["1", "2"], ["1", "3"], ["2", "3"], ["2", "4"], ["3", "4"]]}`	`{"buckets": [["0", "1", "4"], ["2"], ["3"], []], "cycle_span": 12, "members": 5, "moved": ["2", "3"], "occupancy": [3, 1, 1, 0], "split_aliases": [["0", "2"], ["0", "3"], ["1", "2"], ["1", "3"], ["2", "3"], ["2", "4"], ["3", "4"]]}`	Failed

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