feat: enhance date parsing to support month-only formats and normalize URLs to prevent duplicates

src/App.jsx

@@ -31,8 +31,37 @@ const DATE_RANGE_OPTIONS = [
 
 const parseDate = (value) => {
   if (!value) return null;
-  const date = new Date(value);
-  return Number.isNaN(date.getTime()) ? null : date;
+
+  const toDate = (input) => {
+    const date = new Date(input);
+    return Number.isNaN(date.getTime()) ? null : date;
+  };
+
+  let date = value instanceof Date ? value : null;
+
+  if (!date && (typeof value === "number" || typeof value === "string")) {
+    date = toDate(value);
+
+    if (!date && typeof value === "string") {
+      const trimmed = value.trim();
+      const dayMatch = trimmed.match(/^([0-9]{1,2})[\/\-]([0-9]{1,2})[\/\-]([0-9]{2,4})$/);
+
+      if (dayMatch) {
+        const [, day, month, year] = dayMatch;
+        const normalizedYear = year.length === 2 ? `20${year}` : year;
+        date = toDate(`${normalizedYear.padStart(4, "0")}-${month.padStart(2, "0")}-${day.padStart(2, "0")}`);
+      } else {
+        const monthMatch = trimmed.match(/^([0-9]{1,2})[\/\-]([0-9]{2,4})$/);
+        if (monthMatch) {
+          const [, month, year] = monthMatch;
+          const normalizedYear = year.length === 2 ? `20${year}` : year;
+          date = toDate(`${normalizedYear.padStart(4, "0")}-${month.padStart(2, "0")}-01`);
+        }
+      }
+    }
+  }
+
+  return date;
 };
 
 const matchesDateRange = (annonce, range) => {