feat: open-source template refactor

- Extract content to src/config/profile.js (single-file customization)
- Add Apache-2.0 LICENSE, CONTRIBUTING.md, robots.txt
- Add GitHub Pages auto-deploy workflow
- Update package.json: private=false, license, homepage
- Add SEO/Open Graph meta tags to index.html
- Rewrite README.md with Quick Start guide
- Update .gitignore: AI tooling, caches, deployment state

index.html

@@ -1,9 +1,14 @@
 <!DOCTYPE html>
-<html lang="zh-CN">
+<html lang="en">
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
-    <title>Mr Hoelee Resume</title>
+    <meta name="description" content="Animated developer profile — customize and showcase your own resume with typewriter effects.">
+    <meta property="og:title" content="Animated Profile | me.hoelee.com">
+    <meta property="og:description" content="An interactive animated resume with typewriter effects. Built with Vue 3 + Vite.">
+    <meta property="og:url" content="https://me.hoelee.com">
+    <meta property="og:type" content="website">
+    <title>Animated Profile | me.hoelee.com</title>
     <link rel="icon" type="image/x-icon" href="./favicon.ico">
     <link rel="shortcut icon" type="image/x-icon" href="./favicon.ico">
   </head>