feat: Modernize portfolio with dependency upgrades, SEO and stack refresh

Dependencies & tooling:
- Update all dependencies to latest and migrate to TypeScript 6

UI:
- Point all "Contact me" buttons to LinkedIn
- Refresh the technology grid: add Convex, Supabase, Claude Code and OpenAI,
  drop Redux, expand to a 3x4 layout that fits on mobile

SEO & discoverability:
- Add Open Graph, Twitter, canonical and metadataBase metadata plus Person
  JSON-LD typed via schema-dts
- Add sitemap.ts, robots.ts and an llms.txt route, all derived from a shared
  SITE_URL; remove the static robots.txt
- Fix the document outline to a single h1 with h2/h3 sections and improve the
  hero image alt text

Squashed from five commits made across two sessions.

Author: TheCodeDestroyer

README.md

@@ -1,29 +1,52 @@
-# About me page
+# thecodedestroyer.com
 
-## Setup
+Personal portfolio / about-me site, built with [Next.js](https://nextjs.org/) and deployed to Vercel.
 
-- Prerequisite
+## Tech stack
 
-```
-gem install bundler
-```
+- **Next.js 16** (App Router, Turbopack)
+- **React 19**
+- **TypeScript**
+- **Tailwind CSS 4**
+- **Framer Motion** for animations, **Zustand** for client state
+- **Headless UI** + **Heroicons** for accessible UI primitives
 
-- Install
+## Prerequisites
 
-```
-bundle install
+- **Node.js** — see [`.nvmrc`](./.nvmrc) (Node 22)
+- **pnpm** — see the `packageManager` field in [`package.json`](./package.json)
+
+```sh
+nvm use            # or: nvm install
+corepack enable    # provisions the pinned pnpm version
 ```
 
-- Update
+## Setup
 
+```sh
+pnpm install
 ```
-bundle update
-bundle update github-pages
+
+## Development
+
+```sh
+pnpm dev           # start the dev server at http://localhost:3000
 ```
 
-- Run (Requires: NodeJS v5.6.0)
+## Build & run
 
+```sh
+pnpm build         # production build
+pnpm start         # serve the production build
 ```
-npm install
-npm start
+
+## Quality
+
+```sh
+pnpm lint          # ESLint
+pnpm format        # Prettier
 ```
+
+## Deployment
+
+Pushes to the default branch are deployed automatically by Vercel.

package.json

@@ -11,41 +11,42 @@
     "start": "next start"
   },
   "dependencies": {
-    "@headlessui/react": "2.2.9",
-    "@heroicons/react": "2.1.3",
-    "@vercel/analytics": "1.2.2",
-    "@vercel/speed-insights": "1.0.10",
-    "class-variance-authority": "0.7.0",
-    "framer-motion": "12.23.26",
-    "next": "16.0.10",
-    "react": "19.2.3",
+    "@headlessui/react": "2.2.10",
+    "@heroicons/react": "2.2.0",
+    "@vercel/analytics": "2.0.1",
+    "@vercel/speed-insights": "2.0.0",
+    "class-variance-authority": "0.7.1",
+    "framer-motion": "12.42.0",
+    "next": "16.2.9",
+    "react": "19.2.7",
     "react-device-detect": "2.2.3",
-    "react-dom": "19.2.3",
-    "sharp": "0.33.3",
-    "zod": "3.23.4",
-    "zustand": "5.0.9"
+    "react-dom": "19.2.7",
+    "sharp": "0.35.2",
+    "zod": "4.4.3",
+    "zustand": "5.0.14"
   },
   "devDependencies": {
-    "@tailwindcss/postcss": "4.1.18",
+    "@tailwindcss/postcss": "4.3.2",
     "@tcd-devkit/eslint-preset-next": "0.1.13",
     "@tcd-devkit/prettier-config-react": "0.1.7",
     "@tcd-devkit/scripts": "0.2.2",
     "@tcd-devkit/tsconfig": "0.1.3",
-    "@types/node": "22.9.0",
-    "@types/react": "19.2.7",
+    "@types/node": "26.0.1",
+    "@types/react": "19.2.17",
     "@types/react-dom": "19.2.3",
-    "clsx": "2.1.0",
+    "clsx": "2.1.1",
     "eslint": "9.39.2",
-    "eslint-config-next": "16.0.10",
-    "postcss": "8.5.6",
-    "prettier": "3.7.4",
-    "tailwindcss": "4.1.18",
-    "typescript": "5.9.3"
+    "eslint-config-next": "16.2.9",
+    "postcss": "8.5.16",
+    "prettier": "3.9.3",
+    "schema-dts": "2.0.0",
+    "tailwindcss": "4.3.2",
+    "typescript": "6.0.3"
   },
   "packageManager": "pnpm@10.25.0",
   "pnpm": {
     "overrides": {
-      "@types/react": "19.2.7",
+      "@types/react": "19.2.17",
       "@types/react-dom": "19.2.3"
     }
   }