fix: PayPal payment_method column length issue; add image model selection for storyboard; remove task restore popups; sync UserWork status on task failure

demo/frontend/src/views/Welcome.vue

@@ -22,7 +22,7 @@
     <main class="content">
       <h1 class="title">
         <span class="title-line">
-          <span class="bright-text">智创</span><span class="gradient-text">无限，</span>
+          <span class="bright-text">智创</span><span class="gradient-text">无限,</span>
         </span>
         <span class="title-line">
           <span class="bright-text">灵感</span><span class="gradient-text">变现。</span>
@@ -61,23 +61,31 @@ const goToStoryboardVideo = () => {
 </script>
 
 <style scoped>
+/* 自定义字体 */
+@font-face {
+  font-family: 'Taipei Sans TC';
+  src: url('/fonts/TaipeiSansTC.ttf') format('truetype');
+  font-weight: normal;
+  font-style: normal;
+  font-display: swap;
+}
+
 .welcome-page {
   position: relative;
   width: 100%;
-  min-height: 100vh;
+  height: 100vh;
   overflow: hidden;
-  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+  font-family: 'Taipei Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
 }
 
 .welcome-page::before {
   content: '';
-  position: absolute;
+  position: fixed;
   top: 0;
-  left: 50%;
-  transform: translateX(-50%);
-  width: 2156px;
-  height: 1394px;
-  background: url('/images/backgrounds/27.jpg') center/cover no-repeat;
+  left: 0;
+  width: 100vw;
+  height: 100vh;
+  background: url('/images/backgrounds/welcome-bg.svg') center/cover no-repeat;
   z-index: -1;
 }
 
@@ -175,12 +183,13 @@ const goToStoryboardVideo = () => {
 }
 
 .title {
+  font-family: 'Taipei Sans TC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
   font-size: 6.5rem;
   font-weight: 700;
   color: white;
   line-height: 1.1;
   margin-bottom: 60px;
-  letter-spacing: -0.03em;
+  letter-spacing: 0.05em;
   text-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
   text-align: center;
   display: flex;
@@ -289,4 +298,15 @@ const goToStoryboardVideo = () => {
     font-size: 16px;
   }
 }
+</style>
+
+<style>
+/* 全局样式 - 隐藏滚动条 */
+html:has(.welcome-page),
+body:has(.welcome-page) {
+  overflow: hidden !important;
+  height: 100% !important;
+  margin: 0 !important;
+  padding: 0 !important;
+}
 </style>