feat(adk): support config OutputKey to store final answer to SessionV…

…alues (#711)

feat: agentic model support stop option

feat: improve AgenticToolChoice (#684)

feat(adk): add Unwrap support to WillRetryError for error chain inspe…

…ction (#707)

- Add unexported 'err' field to WillRetryError to store original error
- Implement Unwrap() method for errors.Is/errors.As support
- Update genErrWrapper to populate the err field
- Add comprehensive documentation explaining field design rationale
- Add test for Unwrap functionality with custom error type

The err field is unexported because Gob serialization would fail for
unregistered concrete error types. End-users only need the original
error when AgentEvent first occurs, not after checkpoint restore.

feat(adk): support skill (#661)

feat(components): add tool interrupt APIs and extend isResumeTarget f…

…or descendant targets (#691)

fix(compose): enable ProcessState in OnStart during graph resumption (#…

…695)

fix(compose): unique graph successors (#693)

fix: reset callback manager when using AgentAsTool

feat(adk): Improve filesystem backend fields comments and add validat…

…ion to write method (#687)

feat(adk): Improve comments and add validation to Write function