fix: viewport metadata (Next.js 15), lazy auth client init (location SSR error), force-dynamic dashboard

app/parent/auth/login/page.tsx

@@ -2,7 +2,7 @@
 
 import { useState } from "react"
 import { useRouter } from "next/navigation"
-import { authClient } from "@/lib/auth-client"
+import { getAuth } from "@/lib/auth-client"
 
 export default function LoginPage() {
   const [email, setEmail] = useState("")
@@ -16,7 +16,14 @@ export default function LoginPage() {
     setLoading(true)
     setError("")
 
-    const { error: err } = await authClient.signIn.email({
+    const auth = getAuth()
+    if (!auth) {
+      setError("Error de inicialización")
+      setLoading(false)
+      return
+    }
+
+    const { error: err } = await auth.signIn.email({
       email,
       password,
     })