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/src/components/starter-home.tsx

@@ -54,7 +54,7 @@ export function rectificationEntryHint(
   summary: RectificationEntrySummary | null,
 ): string | null {
   if (!rectificationForSelf) return "生时校正暂时只支持本人。";
-  if (summary?.hasResumableCase) return "上次那次校正还没完成，可以接着做。";
+  if (summary?.hasResumableCase) return "上次那次校正还没完成，可以在历史对话里接着做。";
   return null;
 }
 

frontend/src/hooks/use-rectification-surface.ts

@@ -345,7 +345,7 @@ export function useRectificationSurface(params: RectificationSurfaceParams) {
 
   function rectificationLimitedToSelf(): boolean {
     if (readCurrentSubjectId() === "self") return false;
-    setRectificationError("生时校正暂时只支持本人");
+    setRectificationError("生时校正暂时只支持本人。");
     return true;
   }