feat: update residence learning flows

Commit non-media application and asset changes while leaving audio, video, and environment files out of version control.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/letter/LetterToHuangyanpei.tsx

@@ -82,7 +82,7 @@ const LetterToHuangyanpei = ({
       onClose={onClose}
       onSubmit={onSubmit}
       onAnimationEnd={onAnimationEnd}
-      title="寄给黄炎培的信"
+      title="写给黄炎培先生"
       letterContent={letterContent}
       fields={fields}
       contentClassName="!text-[25px]"