4 plans across 3 waves for SSE streaming, agent selector, edit/retry,
slash commands, @mentions, and virtualized message list.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Planning artifacts (milestones v1.0-v1.2.1, v1.3 queue, PROJECT.md,
STATE.md, config) now live alongside the code they describe.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>