L1+L2 staged landing: 5 narrow slices (P0-P4)#21

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mzz/research-run2-landing

Jun 30, 2026

Commits on Jun 30, 2026

P0(slice5): hard-exclude duplicate offspring instead of soft-retain

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P1(slice1): write post-seeding checkpoint before first verification LLM calls

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P2(slice3): short-circuit resume on terminal checkpoint to skip empty round

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P3(slice4): guard single-candidate fallback when model answer is unbound

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P4(slice2): auto-enable upstream health gating when a URL is configured

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L3(portfolio): group final-answer candidates by mechanism family

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