Release availability

The main manual includes unreleased changes. Use the documentation for your installed version and check the package constraint of your extension. The first release containing a symbol establishes its availability; later releases can refine permissions, privacy and failure behavior.

Method	First release
`ConversationServiceInterface::startSession()`	0.23.0
`AbstractOptions::withCallerSource()`	0.30.0
`AgentRuntimeInterface::endProcess()`	0.41.0
`AgentRuntimeInterface::defer()`	0.42.0
`AbstractOptions::withSite()`	0.43.4
`ChatOptions::withoutAnswerCache()`	0.43.11

The public stability contract is API stability. For complete changes, consult Changelog; a method's presence does not establish that an older release implements every behavior described by this development manual.