v0.19.4
What's Changed fix: preserve completed tool guardrail results by @seratch in #4180 fix: redact invalid tool argument errors by @seratch in #4182 fix: defer non-stream session saves until output guardrails by @seratch in #4184 fix: honor resolved status before policy checks by @seratch in #4183 fix: cancel sibling work after concurrent failures by @seratch in #4185 fix: surface non-streaming conten…