fix(web): max_pool表单提示去「默认30」——f214e2f默认已翻0(0=不限),提示与新默认矛盾 [nas]

两处同型: live/New.vue + paper/New.vue。表单已自带0=不限提示语,无需另加占位(策略session建议的可选润色,实际缺口=过时文案)。

frontend/src/views/live/New.vue

@@ -439,7 +439,7 @@ async function onSubmit(): Promise<void> {
         </el-form-item>
         <el-form-item label="选股池上限">
           <el-input-number v-model="poolForm.max_pool" :min="0" :step="10" :controls="false" style="width: 220px" />
-          <span class="muted form-hint">0=不限, N=前N只（默认30）</span>
+          <span class="muted form-hint">0=不限（默认）, N=前N只</span>
         </el-form-item>
         <el-form-item label="比较基准">
           <el-select v-model="poolForm.benchmark" style="width: 220px">

frontend/src/views/paper/New.vue

@@ -322,7 +322,7 @@ function onSymbols(v: string): void {
         </el-form-item>
         <el-form-item label="选股池上限">
           <el-input-number v-model="poolForm.max_pool" :min="0" :step="10" :controls="false" style="width: 220px" />
-          <span class="muted form-hint">0=不限, N=前N只（默认30）</span>
+          <span class="muted form-hint">0=不限（默认）, N=前N只</span>
         </el-form-item>
         <el-form-item label="比较基准">
           <el-select v-model="poolForm.benchmark" style="width: 220px">