fix: 修复更名退款逻辑、审核列表显示及更名消耗确认提示

- 首次更名审核被拒不再退款，首次免费未扣费不产生退款
- 审核列表提交者列改用 UID，当前用户名列显示当前用户名
- 更名消耗提示改为确认弹窗，首次/非首次动态显示不同文案

templates/admin/static/js/audit.js

@@ -149,8 +149,8 @@ function renderTable(items, bodyId) {
 function renderUsernameRow(item) {
     return `
         <tr>
-            <td>${escapeHtml(item.submitter_username || '—')}</td>
-            <td>—</td>
+            <td>${item.user_id || '—'}</td>
+            <td>${escapeHtml(item.current_username || '—')}</td>
             <td><strong>${escapeHtml(item.new_value)}</strong></td>
             <td>${formatTime(item.created_at)}</td>
             <td class="col-actions">
@@ -165,7 +165,7 @@ function renderBioRow(item) {
     const display = text.length > 40 ? text.substring(0, 40) + '...' : text;
     return `
         <tr>
-            <td>${escapeHtml(item.submitter_username || '—')}</td>
+            <td>${item.user_id || '—'}</td>
             <td title="${escapeHtml(text)}">${escapeHtml(display)}</td>
             <td>${formatTime(item.created_at)}</td>
             <td class="col-actions">
@@ -188,7 +188,7 @@ function renderAvatarCards(items) {
     grid.innerHTML = items.map(item => `
         <div class="avatar-audit-card">
             <div class="card-header">
-                <span>提交者: <strong>${escapeHtml(item.submitter_username || '—')}</strong></span>
+                <span>提交者: <strong>${item.user_id || '—'}</strong></span>
                 <span>${formatTime(item.created_at)}</span>
             </div>
             <div class="avatar-compare">
@@ -224,7 +224,7 @@ function renderHistoryTable(items) {
         return `
             <tr>
                 <td>${typeLabel}</td>
-                <td>${escapeHtml(item.submitter_username || '—')}</td>
+                <td>${item.user_id || '—'}</td>
                 <td>${escapeHtml(content)}</td>
                 <td><span class="audit-status-tag ${statusClass}">${statusLabel}</span></td>
                 <td>${escapeHtml(reviewer)}</td>