completed the challenge of vibe kit gpt oss free model

Merge pull request #269 from EmberAGI/test/workflow-lifecycle

Merge remote-tracking branch 'origin/main' into test/workflow-lifecycle

Merge pull request #264 from EmberAGI/feat/add-8004-registration

docs(test): update scratchpad with test implementation summary

test(a2a): add unit tests for context manager edge cases

test(a2a): add context lifecycle integration tests

test(a2a): add message routing test coverage

test(utils): add waitForWorkflowState polling helper

style: remove blank comment lines and fix formatting

refactor(scripts): update debug scripts for Context terminology

refactor(test-mocks): clean up unused variables in AIService stub

test(mocks): replace SessionManager mock with ContextManager

test(utils): update test utilities for Context terminology

test(a2a): update integration tests for Context terminology