fix(settings): gender is set only in the people archive; drop the 个人资料 duplicate (BUG-1119)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N4f2nya58RoRu4yEmJgRGE

frontend/src/hooks/use-profile-onboarding.ts

@@ -29,7 +29,6 @@ import {
   readProfile,
   selectedBirthPlace,
 } from "@/lib/home-profile";
-import { withSavedGender, type ProfileGender } from "@/lib/profile-gender";
 import { saveSelfProfile } from "@/lib/self-profile-save";
 import { createStartGreeting } from "@/lib/starter-greeting";
 import { clearHomeWarmSnapshot } from "@/lib/home-warm-snapshot";
@@ -194,26 +193,6 @@ export function useProfileOnboarding(params: ProfileOnboardingParams) {
     }
   }
 
-  /**
-   * The owner's optional gender (设置 → 个人资料). A PATCH of this one field:
-   * birth-data saves never send it, so they can never clear it.
-   */
-  async function persistGender(gender: ProfileGender | null): Promise<void> {
-    if (!account) throw new Error("账户尚未加载完成");
-    const response = await fetch("/api/account", {
-      method: "PATCH",
-      credentials: "same-origin",
-      headers: { "content-type": "application/json" },
-      body: JSON.stringify({ gender }),
-    });
-    const payload = await response.json().catch(() => null) as { error?: string } | null;
-    if (!response.ok) throw new Error(payload?.error || "性别没保存上，再试一次。");
-    const apply = (current: Profile): Profile => ({ ...current, gender });
-    setProfile(apply);
-    setProfileDraft(apply);
-    setAccount((current) => current ? { ...current, profile: withSavedGender(current.profile, gender) } : current);
-  }
-
   async function persistProfile(nextProfile: Profile): Promise<Profile> {
     if (!account) throw new Error("账户尚未加载完成");
     if (process.env.NODE_ENV === "development" && uiPreview.current) return nextProfile;
@@ -384,7 +363,6 @@ export function useProfileOnboarding(params: ProfileOnboardingParams) {
     openAccountDialog,
     closeAccountDialog,
     persistAvatar,
-    persistGender,
     persistProfile,
     assessSavedBirthTime,
     saveOnboardingName,