feat(icons): split built-in sprite into per-icon SVG sources and add ticket icon

Move the 114 built-in sprite icons out of assets/js/runtime/svg-icon.js into
assets/icons/sprite/{key}.svg and generate svg-icon.js with
tools/build-svg-sprite.mjs. Add ticket-color and use it for the user center
ticket entry. Update sidebar contract tests for the creator card labels.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/widget-system/ticket-schema-contract.test.cjs

@@ -155,7 +155,7 @@ test('ticket panel is registered across the user-center wiring', () => {
 
   const sidebar = read('inc/helpers/user-center-renderers/sidebar-nav.php');
   assert.ok(sidebar.includes("'label' => __('工单中心', 'aksrt')"), 'sidebar label missing');
-  assert.ok(sidebar.includes("'icon'  => 'manual-service'"), 'sidebar icon should reuse the existing headset sprite');
+  assert.ok(sidebar.includes("'icon'  => 'ticket-color'"), 'sidebar icon should use the built-in ticket sprite');
   assert.ok(sidebar.includes("'tab'   => 'tickets'"), 'sidebar tab key missing');
 
   const helper = read('inc/helpers/aksrt-user-center.php');

tests/widget-system/user-center-sidebar-icons-contract.test.cjs

@@ -78,9 +78,13 @@ test('其余侧栏部件按参考主题选型替换为 sprite 图标', () => {
   assert.match(creator, /class="mb10-sm zib-widget padding-10 flex1 pointer"/);
   assert.match(creator, /flex ab jsb col-ml6/);
   assert.match(creator, /<i class="ml6 fa fas fa-angle-right em12"/);
-  for (const label of ['创作中心', '推广中心', '商品', '比例', '今日收入', '收入', '待提现', '累计佣金']) {
+  for (const label of ['创作中心', '推广中心', '现金收益', '积分收益', '比例', '待提现', '累计佣金']) {
     assert.ok(creator.includes(`'${label}'`), `creator card missing label: ${label}`);
   }
+  // 创作中心不再统计商品数与今日收入。
+  for (const label of ['商品', '今日收入', '收入']) {
+    assert.ok(!creator.includes(`'${label}'`), `creator card still renders label: ${label}`);
+  }
   assert.doesNotMatch(creator, /data-onclick/);
 
   const vip = read(sidebarDir + 'sidebar-vip.php');
@@ -148,7 +152,7 @@ test('所用 sprite key 均在前端 sprite 中定义', () => {
   const sprite = read('assets/js/runtime/svg-icon.js');
   const keys = [
     'trend-color', 'user-auth', 'order-color', 'msg-color', 'user-color', 'security-color',
-    'money-color-2', 'points-color', 'merchant-color', 'money-color', 'vip_1', 'time', 'menu', 'right',
+    'money-color-2', 'points-color', 'merchant-color', 'money-color', 'vip_1', 'time', 'menu', 'right', 'ticket-color',
   ];
   for (const key of keys) {
     assert.match(sprite, new RegExp(`aksrt_svgs\\['${key}'\\]\\s*=`), `sprite key missing: ${key}`);