Refine memory LLM preset layout

panel.html

@@ -578,6 +578,7 @@
                       >
                         <option value="">-- 手动模式 --</option>
                       </select>
+                      <div class="bme-llm-preset-actions">
                         <button
                           id="bme-llm-preset-save"
                           class="bme-config-secondary-btn"
@@ -607,6 +608,7 @@
                         </button>
                       </div>
                     </div>
+                  </div>
                   <div class="bme-config-row">
                     <label for="bme-setting-llm-url">LLM API 地址</label>
                     <input

style.css

@@ -1424,18 +1424,25 @@
 }
 
 .bme-llm-preset-controls {
+  display: flex;
+  flex-direction: column;
+  align-items: stretch;
+  gap: 8px;
+}
+
+.bme-llm-preset-controls select {
+  min-width: 0;
+  width: 100%;
+}
+
+.bme-llm-preset-actions {
   display: flex;
   align-items: center;
   gap: 6px;
   flex-wrap: wrap;
 }
 
-.bme-llm-preset-controls select {
-  flex: 1;
-  min-width: 0;
-}
-
-.bme-llm-preset-controls .bme-config-secondary-btn {
+.bme-llm-preset-actions .bme-config-secondary-btn {
   flex-shrink: 0;
 }
 
@@ -2896,12 +2903,12 @@
     width: 100%;
   }
 
-  .bme-llm-preset-controls {
+  .bme-llm-preset-actions {
     flex-direction: column;
     align-items: stretch;
   }
 
-  .bme-llm-preset-controls .bme-config-secondary-btn {
+  .bme-llm-preset-actions .bme-config-secondary-btn {
     width: 100%;
   }