v0.9.2

Added

• Native provider transport. Model calls now flow through a neutral native provider contract instead of routing exclusively through the AI SDK. This release lands native Anthropic (mapping, streaming, capabilities, auth), a native OpenAI-compatible core that backs openai, openrouter, and lmstudio, and native Ollama on its /api/chat endpoint. The AI SDK becomes one transport behind the seam rather than the only path, and provider_options pass straight through to the native transport.
• Open provider registry. custom_providers on EngineConfig lets callers register their own providers, and the native provider contract is exported from the package barrel so those providers can be built against a stable type.
• Loop knobs. Per-turn timeout budgets and a prepare_step hook give callers control over each step of the tool loop.
• OpenTelemetry surface. A trajectory-to-otel bridge plus AI SDK telemetry passthrough emit spans for runs and model calls, with the agent-layer boundary ADR amended to record the seam.

Changed

• Breaking: the subprocess provider is renamed to external. Update any provider: "subprocess" configuration to provider: "external".
• The native provider seam is now the default dispatch path; the AI SDK transport is selected behind it rather than assumed.

Internal

• Mutation coverage hardened across the native providers (openai_compatible_native, ollama_native), the otel surface, and with_providers in create_engine, with the Stryker break gate ratcheted up at the final gate.
• Transport parity golden tests plus an OpenRouter live smoke lock the native and AI SDK transports to identical observable behavior.
• The release skill now detects the previous release from the most recent git tag rather than the last vX.Y.Z commit message.