fix: 植物空胶囊详情显示每颗价格

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/views/OilReference.vue

@@ -237,7 +237,7 @@
               <span class="detail-value">{{ getMeta(selectedOilName)?.bottlePrice != null ? ('¥ ' + getMeta(selectedOilName).bottlePrice.toFixed(2)) : '--' }}</span>
             </div>
             <div class="detail-row">
-              <span class="detail-label">每滴价格</span>
+              <span class="detail-label">每{{ oilPriceUnit(selectedOilName) }}价格</span>
               <span class="detail-value">{{ oils.pricePerDrop(selectedOilName) ? ('¥ ' + oils.pricePerDrop(selectedOilName).toFixed(4)) : '--' }}</span>
             </div>
             <div class="detail-row" v-if="getMeta(selectedOilName)?.retailPrice">
@@ -245,7 +245,7 @@
               <span class="detail-value">¥ {{ getMeta(selectedOilName).retailPrice.toFixed(2) }}</span>
             </div>
             <div class="detail-row" v-if="getMeta(selectedOilName)?.retailPrice && getMeta(selectedOilName)?.dropCount">
-              <span class="detail-label">每滴价格</span>
+              <span class="detail-label">每{{ oilPriceUnit(selectedOilName) }}价格</span>
               <span class="detail-value">¥ {{ (getMeta(selectedOilName).retailPrice / getMeta(selectedOilName).dropCount).toFixed(4) }}</span>
             </div>
           </template>