feat: Migrate landing page to Vue 3 + TypeScript

- Replace static HTML with Vue 3 SPA (Vite + TypeScript)
- Add GalaxyCanvas component (interactive particle animation)
- Component-based sections (HeroSection, SectionBlock, FooterView)
- Add nginx.conf with SPA routing + security headers
- Update compose.yaml to mount nginx config
- Build output in html/ directory

tsconfig.app.json

@@ -0,0 +1,23 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "ESNext",
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "skipLibCheck": true,
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "isolatedModules": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "preserve",
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true,
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "include": ["src/**/*.ts", "src/**/*.tsx", "src/**/*.vue"]
+}