feat: multi-select contacts filter panel for groups sources and mood

apps/api/src/common/search.ts

@@ -79,6 +79,19 @@ export function buildSearchWhere<W extends object>(
   return (parts.length === 1 ? parts[0] : { AND: parts }) as unknown as W;
 }
 
+/** پارامتر چندتایی کوئری: «a,b,c» → ['a','b','c'] */
+export function splitCsv(raw: string | null | undefined, max = 50): string[] {
+  if (!raw) return [];
+  return [
+    ...new Set(
+      String(raw)
+        .split(',')
+        .map((v) => v.trim())
+        .filter(Boolean),
+    ),
+  ].slice(0, max);
+}
+
 /** کمک برای فیلدهای متنی ساده: `{ field: { contains, mode: 'insensitive' } }` */
 export function ci(term: string) {
   return { contains: term, mode: 'insensitive' as const };