Phase 9a (ADR-0014): Registry.RegisterResolver for dynamic tiers; DefineTool[Args] typed tools; Usage cache/reasoning detail fields wired through anthropic/openai/google; WithPromptCaching (Anthropic cache_control); agent supervision hooks (WithMaxStepsFunc, WithSteer, WithCompactor, WithToolErrorLimits + ErrToolLoop); health Bench/Unbench/Snapshot; ChainConfig.Observer failover events. Co-Authored-By: Claude Fable 5 <[email protected]>
Phase 3: - provider/openai: Chat Completions for OpenAI + compat endpoints (SSE streaming with by-index tool-call assembly, response_format json_schema, legacy max_tokens option, reasoning_effort) - provider/anthropic: Messages API (tool_use/tool_result, GA structured output via output_config.format, full SSE event parser, 529 transient) - provider/ollama: one native /api/chat client behind the ollama, ollama-cloud, and foreman built-ins (presets; NDJSON streaming tolerant of foreman's buffered single-object responses; object tool arguments; format-schema structured output; think mapping) - media/: capability normalization (sniff, downscale, transcode, byte ladder, ErrUnsupported), wired into the chain executor per target with penalty-free advance past incapable elements - registry: real provider + scheme wiring, WithHTTPClient option, required env-foreman TLS chat round-trip test - ADR-0009 multimodal strategy, ADR-0010 tools/structured mapping; README matrix + CLAUDE.md synced Co-Authored-By: Claude Fable 5 <[email protected]>