docs+fix(home): amend resumable hint to point at history (brief amendment)

- D2 resumable hint becomes「上次那次校正还没完成，可以在历史对话里接着做。」
  so it does not imply the homepage pill resumes (it always creates).
- The click-time non-self error in useRectificationSurface is the same
  user-visible sentence as the homepage hint; add the full stop.
- Source, test, VOICE, DESIGN, CHANGELOG, BUG-1041, testing list and
  PROGRESS (amendment by Claude) updated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017eEAG8HD3mm8gsKXgk8uU8

frontend/DESIGN.md

@@ -602,7 +602,7 @@ page. Three parts now, in reading order:
   visible branches and reads the entry summary itself, never the session list
   and never the derived start/restart label: a non-self current person →
   「生时校正暂时只支持本人。」; otherwise `hasResumableCase` →
-  「上次那次校正还没完成，可以接着做。」. First runs and finished cases show no
+  「上次那次校正还没完成，可以在历史对话里接着做。」. First runs and finished cases show no
   hint. The old first-run and "redo" sentences are gone. (The summary parser had
   been reading the wrong key casing since 2026-08-11, so every account looked
   like a first run — BUG-1041.)