V2 to V3 Agent Migration

This release introduces /upgrade-agent to migrate V2 custom agent configurations to the universal format, automatic retries for interrupted model responses, and quality-of-life improvements across both modes.

Migrate V2 agent configuration files to the universal format that works with both V2 and V3. Run /upgrade-agent inside a V3 session to convert your existing custom agent configs in place the command reads your V2 configuration and produces an updated file compatible with both modes. Available in V3 mode (kiro-cli --v3). Learn more ->