fix: 精油搜索框撑宽整表，限制 width 100% 让 4 列都能展示

.form-select 之前没设 width，<input> 默认 size=20 宽约 180px，
把整个 editor-table 撑出面板，后面几列被挤出屏幕。加 width 100%
+ min-width 0 + box-sizing border-box，让精油列占剩余空间即可。

frontend/src/views/RecipeManager.vue

@@ -2307,6 +2307,9 @@ watch(() => recipeStore.recipes, () => {
 
 .form-select {
   flex: 1;
+  width: 100%;
+  min-width: 0;
+  box-sizing: border-box;
   padding: 8px 10px;
   border: 1.5px solid #d4cfc7;
   border-radius: 8px;
@@ -2328,6 +2331,7 @@ watch(() => recipeStore.recipes, () => {
 
 .oil-search-wrap {
   flex: 1;
+  width: 100%;
   position: relative;
 }