Ed Zynda 558fb5214f feat(sdk): expose remaining Fantasy lifecycle callbacks as events and hooks ...

Closes #19.

SDK events (pkg/kit):
- Add 10 new event types: StepStart, StepFinish, TextStart, TextEnd,
  ReasoningStart, Warnings, Source, StreamFinish, Error, Retry
- Add typed convenience subscribers for all 31 event types (20 previously
  required raw Subscribe + type assertion)
- Add OnPrepareStep hook for intercepting/replacing messages between
  steps within a multi-step turn (composes with existing steering)
- Rename OnStreaming to OnMessageUpdate (deprecated alias kept)

Agent internals (internal/agent):
- Add GenerateCallbacks struct replacing 16 positional callback params
- Add GenerateWithCallbacks method; deprecate GenerateWithLoopAndStreaming
- Wire all Fantasy stream callbacks: OnStepStart, OnTextStart/End,
  OnReasoningStart, OnWarnings, OnSource, OnStreamFinish, OnError,
  OnRetry, OnStepFinish (unified step event)
- Compose PrepareStep with steering channel + consumer hook

Extension system (internal/extensions):
- Add 8 new extension events: StepStart, StepFinish, ReasoningStart,
  Warnings, Source, Error, Retry, PrepareStep
- Bridge SDK events to extension runner with Yaegi-safe types (string
  errors, plain int64 token fields, ContextMessage for PrepareStep)

Docs: update README, SDK skill, www/sdk/callbacks, www/sdk/overview

2026-04-22 20:25:06 +03:00

..

extensions

fix(extensions): serialize handler calls per-extension to prevent data races

2026-04-16 12:11:10 +03:00

sdk

feat(sdk): expose remaining Fantasy lifecycle callbacks as events and hooks

2026-04-22 20:25:06 +03:00