feat(discover): chip-targeted filter panel — scroll to + highlight target section

- Each filter chip (年龄/学历/婚姻) carries data-target pointing to its section
- openFilterPanel receives TouchEvent, maps target to section id, sets panelScrollTo + panelHighlight
- Panel uses scroll-view scroll-into-view with scroll-with-animation for smooth scroll
- Targeted section gets pink outline highlight via .hl class
- Non-targeted sections remain normally visible for context

miniapp/pages/discover/discover.ts

@@ -44,6 +44,9 @@ interface DiscoverData {
   educations: Array<{ code: string; label: string }>;
   maritalStatuses: Array<{ code: string; label: string }>;
   actionLoadingUserId: string;
+  // 抽屉滚动/高亮定位
+  panelScrollTo: string;
+  panelHighlight: string;
 }
 
 const DEFAULT_MIN_AGE = 18;
@@ -89,6 +92,8 @@ Page({
       { code: 'divorced', label: '离异' },
     ],
     actionLoadingUserId: '',
+    panelScrollTo: '',
+    panelHighlight: '',
   } as DiscoverData,
 
   onLoad() {
@@ -186,9 +191,10 @@ Page({
     this.fetchDiscover(true);
   },
 
-  /** 打开筛选面板，并同步当前 applied 状态到 temp */
-  openFilterPanel() {
-    console.log('[discover] openFilterPanel called');
+  /** 打开筛选面板，并同步当前 applied 状态到 temp，可选定位到 target section */
+  openFilterPanel(e?: WechatMiniprogram.TouchEvent) {
+    const target = e ? (e.currentTarget.dataset as any).target as string | undefined : undefined;
+    const sectionMap: Record<string, string> = { age: 'sec-age', education: 'sec-education', marital: 'sec-marital', region: 'sec-region' };
     const a = this.data.applied;
     this.setData({
       showFilter: true,
@@ -197,8 +203,8 @@ Page({
       tempMaxAge: a.maxAge,
       tempEducationCode: a.educationCode,
       tempMaritalStatus: a.maritalStatus,
-    }, () => {
-      console.log('[discover] showFilter set to true, current state:', JSON.stringify(this.data.applied));
+      panelScrollTo: target ? (sectionMap[target] || '') : '',
+      panelHighlight: target || '',
     });
   },