feat: harden portfolio and add SEO foundations

app/components/cinematic/HeroScene.tsx

@@ -4,14 +4,6 @@ import { Canvas, useFrame, useThree } from "@react-three/fiber";
 import { useEffect, useMemo, useRef } from "react";
 import * as THREE from "three";
 
-type HeroSceneVariant =
-  | "command"
-  | "launch"
-  | "rescue"
-  | "signal"
-  | "diagnostic"
-  | "portrait";
-
 function GridFloor() {
   const meshRef = useRef<THREE.Mesh>(null);
 
@@ -104,13 +96,10 @@ function CameraRig() {
 }
 
 export default function HeroScene({
-  variant,
   isVisible = true,
 }: {
-  variant?: HeroSceneVariant;
   isVisible?: boolean;
 }) {
-  void variant;
   return (
     <div
       className="absolute inset-0 z-0"