Drop the rebuilt-document reopen heuristic

rebuild could misfire it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

C5MAMaggie Appleton and Claude Opus 5.5 authored last month

9f19117

3 files changed+1-72

StackedSplit

packages/editor/src/plan-editor.tsx+1 −2

packages/editor/src/research-draft.test.ts+0 −33

packages/editor/src/research-draft.ts+0 −37