docs([2fd88f42]): finalize documentation and update tasks for heatmap tool

heatmap-tool/frontend/src/components/PlzSelector.tsx

@@ -0,0 +1,42 @@
+// src/components/PlzSelector.tsx
+import React, { useState } from 'react';
+
+interface PlzSelectorProps {
+  columns: string[];
+  onSubmit: (selectedColumn: string) => void;
+  isLoading: boolean;
+}
+
+const PlzSelector: React.FC<PlzSelectorProps> = ({ columns, onSubmit, isLoading }) => {
+  const [selectedColumn, setSelectedColumn] = useState<string>(columns[0] || '');
+
+  const handleSubmit = (e: React.FormEvent) => {
+    e.preventDefault();
+    if (selectedColumn) {
+      onSubmit(selectedColumn);
+    }
+  };
+
+  return (
+    <div className="plz-selector" style={{ padding: '20px', border: '1px solid #555', borderRadius: '5px', marginTop: '20px' }}>
+      <h3>Postal Code Column Not Found</h3>
+      <p>Please select the column containing the postal codes (PLZ) from the list below.</p>
+      <form onSubmit={handleSubmit}>
+        <select 
+          value={selectedColumn} 
+          onChange={(e) => setSelectedColumn(e.target.value)}
+          style={{ width: '100%', padding: '8px', marginBottom: '10px' }}
+        >
+          {columns.map(col => (
+            <option key={col} value={col}>{col}</option>
+          ))}
+        </select>
+        <button type="submit" disabled={isLoading || !selectedColumn} style={{ width: '100%', padding: '10px' }}>
+          {isLoading ? 'Confirming...' : 'Confirm'}
+        </button>
+      </form>
+    </div>
+  );
+};
+
+export default PlzSelector;