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Clients that negotiate the AIR `recommendedValue` capability receive concrete model and effort choices instead of ambiguous default rows. The SDK's default model is mapped only to an exact selectable model (including equivalent context suffix spellings); unavailable recommendations retain the legacy default. Recommendations remain independent of explicit selections. The adapter applies the displayed effort to the SDK at startup and on model switches, preserving supported user pins and re-reading per-model settings for automatic choices. Permission modes and clients without the capability retain their existing configuration behavior. Model and effort configuration logic is extracted into dedicated modules. Terse SDK model labels are enriched with concrete versions from model metadata: for example, `Fable` becomes `Fable 5.1`, `Sonnet` becomes `Sonnet 5`, and `Opus (1M context)` becomes `Opus 5`. Custom names are preserved, and collisions fall back to the original labels. An SDK version guard requires review on upgrades, and an opt-in live initialization test verifies the upstream model contract without sending a prompt. Validation: - `npm run check` - `npm run build` - `env -u ANTHROPIC_BASE_URL npm run test:run` — 1253 passed, 28 skipped - `RUN_INTEGRATION_TESTS=true npx vitest run src/tests/model-presentation.test.ts` — 4 passed - Regression coverage for unavailable model generations/context windows, startup effort, per-model settings, unsupported effort pins, and duplicate Opus labels