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docs(roteamento): ID concreto no Claude Code é rota explícita, sem fallback; virtual com o mesmo nome devolve a cascata - #492

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ship/v0.31.8
Nov 7, 2026
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patrickbrandao merged 2 commits into
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Shipped by scripts/ship.sh as v0.31.8.

patrickbrandao and others added 2 commits November 7, 2026 18:06
…llback; virtual com o mesmo nome devolve a cascata

Stress run 2026-11-07: Claude Code harnesses got the local cooldown 429 while
Anthropic SDK harnesses on the same chain fell back. Cause: the SDK load sent
model=auto, the Claude Code load a concrete ID, and a concrete ID resolves to
an explicit route with no fallbacks (intended, ADR 0004). New spec proves the
three cases (auto, concrete ID, shadowing virtual model) with Claude Code
headers against a cooling-down primary.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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patrickbrandao merged commit 597ef8c into main Nov 7, 2026
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patrickbrandao deleted the ship/v0.31.8 branch November 7, 2026 21:07
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