Keep unchanged history panes and task strips from rerendering during typing, and stabilize message callbacks across cached conversation switches. Preserve streaming updates, scroll positions, drafts, and asynchronous attachment ownership.
Add App regressions for render isolation, warm switches, retry, and image recovery. Focused tests, typecheck, and lint passed; the full suite encountered unrelated settings failures.
Release note: 减少任务运行时输入和切换已缓存长会话的重复渲染，保留实时输出、滚动位置和会话草稿。
mesalogo
c23dca65e8