feat(dashboard): generate user fallback avatar using user email. Allow

user to select the default avatar.

apps/dokploy/lib/utils.ts

@@ -27,3 +27,15 @@ export function formatTimestamp(timestamp: string | number) {
 		return "Fecha inválida";
 	}
 }
+
+export function getFallbackAvatarInitials(email: string | undefined): string {
+    if (typeof email === "undefined") return "CN";
+
+    const [emailUsername = ""] = email.split('@');
+    const parts = emailUsername.split(/[\._-]+/).filter(Boolean);
+    if (parts.length >= 2) {
+        // @ts-ignore we are sure parts[0] and parts[1] exist
+        return (parts[0]?.charAt(0) + parts[1].charAt(0)).toUpperCase();
+    }
+    return emailUsername.slice(0, 2).toUpperCase();
+}