fix(frontend): simplify processing imports

scripts/tests/processing-import-ui.test.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+PAGE="$ROOT_DIR/frontend/src/views/knowledge/processing.vue"
+
+grep -Fq '>批量导入</el-button>' "$PAGE"
+grep -Fq ':data="pagedTasks"' "$PAGE"
+grep -Fq 'v-model:current-page="taskPage"' "$PAGE"
+grep -Fq 'const pagedTasks = computed' "$PAGE"
+for removed in '选择目录' '服务端导入' 'webkitdirectory'; do
+  if grep -Fq "$removed" "$PAGE"; then
+    echo "FAIL: processing page still contains $removed" >&2
+    exit 1
+  fi
+done
+
+echo 'PASS: processing page exposes batch import only'