v2.5.0

• fix(test): wrap SearchConfig in Arc for test_web_search_headless
• chore: update examples package-lock.json to v2.5.0
• chore: bump version to v2.5.0
• docs(sdk): document confirmation_inheritance in Node and Python SDK READMEs
• test(sdk): add integration tests for ConfirmationInheritance in Python and Node SDKs
• feat(sdk): expose ConfirmationInheritance in Python and Node SDKs
• test(task): add mock LLM contract tests for task delegation
• feat(task): add ChildRunContext for explicit parent capability inheritance
• refactor(tools): remove redundant guard_policy from ToolExecutor
• feat(task): add ConfirmationInheritance for child run Ask resolution
• refactor(task): unify AgentDefinition → AgentConfig via apply_to()
• test: add integration test for task permission inheritance (Issue #28)
• fix(task): inherit permission checker from agent definition in child runs
• docs: update README for v2.4.0 — add generate_object and structured output