replace

Atomically replaces the stateful fields of this context with those of context, under the write lock of mutableAIAgentContext.

Concurrency caveats:

• mutableAIAgentContext's lock is not reentrant; do not call replace from inside another operation that already holds it (e.g. from within a transformation running under MutableAIAgentContext.copy).

• Consumers that read fields directly (e.g. ctx.llm, ctx.storage) without going through the MutableAIAgentContext lock may observe a non-atomic mix of old and new values while a concurrent replace is in progress.