style(OcrView): 调整渠道列宽度

- 将渠道列的最小宽度从 10 调整为 100
- 优化表格布局，提高可读性

src/views/OcrView.vue

@@ -26,7 +26,7 @@
             <ElButton :icon="Refresh" @click="table.refresh(true)" circle />
         </template>
         <ElTableColumn prop="id" label="#" width="80" />
-        <ElTableColumn prop="channel" label="渠道" min-width="10" />
+        <ElTableColumn prop="channel" label="渠道" min-width="100" />
         <ElTableColumn prop="deviceId" label="设备" width="150" align="center">
             <template #default="{ row }">
                 <span