Add inline pet rename, larger header text, and HaBit branding.

Let users edit the pet name from PetHabitat with a pencil icon, bump the name and mood header sizing, and rename user-facing Habit Pet copy to HaBit Pet.

app/(app)/avatar/page.tsx

@@ -6,7 +6,7 @@ import { AppShell } from "@/components/layout/app-shell";
 export default function AvatarPage() {
   return (
     <AppShell
-      title="Your Habit Pet"
+      title="Your HaBit Pet"
       description="Watch your pet roam, breathe, and react to how you care for them."
       fillViewport
       centered

app/auth/sign-up-success/page.tsx

@@ -22,7 +22,7 @@ export default function Page() {
             </CardHeader>
             <CardContent>
               <p className="text-sm text-muted-foreground">
-                Your account is ready. You can sign in and start using Habit Pet.
+                Your account is ready. You can sign in and start using HaBit Pet.
               </p>
             </CardContent>
           </Card>

app/layout.tsx

@@ -12,7 +12,7 @@ const defaultUrl = process.env.VERCEL_URL
 
 export const metadata: Metadata = {
   metadataBase: new URL(defaultUrl),
-  title: "Habit Pet",
+  title: "HaBit Pet",
   description: "Build habits, care for your pixel pet, and track wellness every day.",
 };