v2.1.0

Changelog

2.1.0 — 2026-07-25

Publishes the Phase 3–4 work already on master. npm 2.0.0 shipped the 2.0
kernel and provider adapters only; this minor adds the remaining public surface
documented in the README and semver policy.

Added

• Provider-neutral streaming (StreamEvent, .stream() / .streamText(),
  native streams for OpenAI / Anthropic / Google with generate→stream fallback)
• Built-in middleware: timingPlugin, rateLimitPlugin, cachePlugin,
  fallbackPlugin, fallbackProvider
• Retry helpers: classifyError, isRetryable, withRetry (+ docs/retry.md)
• ProviderCapabilities on ModelProvider
• Compatibility fixtures for multimodal and tool-call round trips
• Framework examples under examples/ (HTTP handler, queue worker, cron job)
• Written guidance: docs/semver.md,
  docs/provider-packages.md

Notes

• Additive API only; no breaking changes from 2.0.0.
• Retries remain opt-in application policy (no hidden retries in core).
• Provider SDKs stay bundled behind genaicode/providers for 2.x.

2.0.0 — 2026-07-24

Major pivot from coding agent to backend LLM toolkit.

• genaicode() client, immutable request builders, conversation chains
• PromptItem IR and prompt/result helpers
• OpenAI, OpenAI-compatible, Anthropic, Gemini, and Vertex adapters
• GenAIPlugin middleware contract
• Coding-agent CLI/UI/tools removed; npx genaicode prints migration guidance
  (1.x remains on the 1.x branch / genaicode@1)