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Phase 8: all six live checks pass (tier aliases, thinking-tier chat, real tool invocation, structured Generate[T], forced failover with bench+skip, skill agent). Discovery: ollama.com ignores the format field — the provider now also states the schema as a system instruction (constrained decoding locally, instruction-guided JSON on cloud), with hermetic test. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>