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Tier engine strings (claude_haiku/claude_sonnet) were stripped back to azure_mini by per-method whitelists, so both tiers ran gpt-4o-mini and Pro charged 2x for the same model. Add a shared DbnBedrockModelRouter:: deploymentForEngine() helper and route the cloud path through it across summarize, ask, barnevernet, discrepancy, deep-research, and korrespond. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>