feat: track cloud sign_up event in dataLayer

Fires the sign_up dataLayer event already read by GTM for the three
signup paths on the cloud version: email/password (register.tsx),
GitHub/Google OAuth (via better-auth's newUserCallbackURL, distinct
from callbackURL so returning-user logins aren't counted), and
invitation acceptance. All gated behind isCloud, same as the rest of
the analytics wiring.

apps/dokploy/components/proprietary/auth/sign-in-with-github.tsx

@@ -13,6 +13,8 @@ export function SignInWithGithub() {
 		try {
 			const { error } = await authClient.signIn.social({
 				provider: "github",
+				callbackURL: "/dashboard/home",
+				newUserCallbackURL: "/dashboard/home?signup=github",
 				errorCallbackURL: "/",
 			});
 			if (error) {

apps/dokploy/components/proprietary/auth/sign-in-with-google.tsx

@@ -13,6 +13,8 @@ export function SignInWithGoogle() {
 		try {
 			const { error } = await authClient.signIn.social({
 				provider: "google",
+				callbackURL: "/dashboard/home",
+				newUserCallbackURL: "/dashboard/home?signup=google",
 				errorCallbackURL: "/",
 			});
 			if (error) {

apps/dokploy/pages/invitation.tsx

@@ -21,6 +21,7 @@ import {
 	FormMessage,
 } from "@/components/ui/form";
 import { Input } from "@/components/ui/input";
+import { pushToDataLayer } from "@/lib/analytics";
 import { authClient } from "@/lib/auth-client";
 import { api } from "@/utils/api";
 import { useWhitelabelingPublic } from "@/utils/hooks/use-whitelabeling";
@@ -139,6 +140,9 @@ const Invitation = ({
 			});
 
 			toast.success("Account created successfully");
+			if (isCloud) {
+				pushToDataLayer("sign_up", { method: "invitation" });
+			}
 			router.push("/dashboard/home");
 		} catch {
 			toast.error("An error occurred while creating your account");

apps/dokploy/pages/register.tsx

@@ -24,6 +24,7 @@ import {
 	FormMessage,
 } from "@/components/ui/form";
 import { Input } from "@/components/ui/input";
+import { pushToDataLayer } from "@/lib/analytics";
 import { authClient } from "@/lib/auth-client";
 import { useWhitelabelingPublic } from "@/utils/hooks/use-whitelabeling";
 
@@ -116,6 +117,7 @@ const Register = ({ isCloud }: Props) => {
 			if (!isCloud) {
 				router.push("/");
 			} else {
+				pushToDataLayer("sign_up", { method: "email" });
 				setData(data);
 			}
 		}