fix(imagine): 提示词保留在页面，仅将其他设置移入底部表单

app/static/public/css/imagine.css

@@ -1454,3 +1454,27 @@ html[data-theme='dark'] .im-settings-sheet {
   background: #111821;
   color: #e2e8f0;
 }
+
+/* Bottom Sheet 内设置项：单列布局 */
+.im-settings-sheet .settings-grid {
+  grid-template-columns: 1fr !important;
+  grid-template-rows: auto !important;
+}
+.im-settings-sheet .settings-block {
+  grid-column: 1 !important;
+  grid-row: auto !important;
+}
+.im-settings-sheet .settings-row {
+  grid-template-columns: 1fr 1fr;
+}
+
+/* 移动端 settings-card 只剩提示词时的布局调整 */
+@media (max-width: 900px) {
+  .settings-card .card-content {
+    margin-bottom: 0;
+  }
+  .settings-card .settings-block-prompt {
+    grid-column: 1 !important;
+    grid-row: auto !important;
+  }
+}

app/static/public/js/imagine.js

@@ -2379,8 +2379,20 @@
       titleEl.textContent = '生成设置';
       settingsSheet.appendChild(titleEl);
 
+      // 移动整个 card-content 到 Bottom Sheet
       const cardContent = settingsCard.querySelector('.card-content');
       if (cardContent) settingsSheet.appendChild(cardContent);
+
+      // 把提示词区域（.settings-block-prompt）取出，放回页面 settings-card
+      // 这样提示词始终可见，Bottom Sheet 只含其他设置项
+      const promptBlock = settingsSheet.querySelector('.settings-block-prompt');
+      if (promptBlock) {
+        const promptWrap = document.createElement('div');
+        promptWrap.className = 'card-content';
+        promptWrap.appendChild(promptBlock);
+        settingsCard.appendChild(promptWrap);
+      }
+
       document.body.appendChild(settingsSheet);
     }