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fix(improve): reserve gateway input within the weekly budget - #332

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tzhouam merged 2 commits into
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fix/improve-gateway-reservations-20261008
Oct 8, 2026
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tzhouam merged 2 commits into
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fix/improve-gateway-reservations-20261008

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@tzhouam

@tzhouam tzhouam commented Oct 8, 2026

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The weekly KB evolution run stopped after MiMo returned more billable input tokens than the visible request byte estimate: its $0.02645874 actual charge exceeded the $0.0249685625 reservation, although the existing $20 weekly envelope still had $19.52 available. Compatible gateways can add input outside the submitted payload, so visible bytes alone do not bound their input cost.

Add IMPROVE_INPUT_CONTEXT_LIMITS, an operator-owned map of exact request model names to provider context ceilings. Reservations use the larger of visible bytes and the configured ceiling, priced at the highest configured input/cache rate, plus maximum output cost. Shadow experiments inherit the governor’s exact map and reject overrides. Settlement, the weekly dollar/judge caps, and the existing breach stop remain intact. The operator guide documents MiMo’s 1M context ceiling, audited breach reconciliation, and scheduling after the Monday UTC week reset (09:00 Shanghai time).

Validation: 116 passed, 1 skipped across budget, shadow experiments, P2/P3 improvement, evolution, and autonomous evolution suites; 13 targeted regressions passed after adding the parent-versus-child configuration check. The recorded MiMo usage settles under a $0.481152 conservative reservation; a smaller existing cap refuses before dispatch. No paid model calls were used.

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📝 Code Review ✅ Completed 2026-10-08T10:25:08.211470Z 442752c PR opened
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@tzhouam
tzhouam merged commit 82c69f9 into main Oct 8, 2026
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