feat: create Lux website with sleek/noble aesthetic

Website design:
- Translucent black (#0a0a0a) with gold (#d4af37) accents
- Strong serif typography (Playfair Display, Source Serif Pro)
- Glass-morphism cards with gold borders
- Responsive layout with elegant animations

Content:
- Landing page with hero, code demo, value props, benchmarks
- Effects-focused messaging ("No surprises. No hidden side effects.")
- Performance benchmarks showing Lux matches C
- Quick start guide

Technical:
- Added HTML rendering functions to stdlib/html.lux
- Created Lux-based site generator (blocked by module import issues)
- Documented Lux weaknesses discovered during development:
  - Module import system not working
  - FileSystem effect incomplete
  - No template string support

The landing page HTML/CSS is complete and viewable.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

website/lux-site/test_html.lux

@@ -0,0 +1,25 @@
+// Test the HTML module rendering capabilities
+
+// Import from stdlib
+// Note: Documenting Lux weakness - no proper module import system visible to user
+
+// Simple HTML test without relying on complex module imports
+fn main(): Unit with {Console} = {
+    Console.print("Testing basic Lux functionality for website generation")
+    Console.print("")
+
+    // Test string concatenation
+    let tag = "div"
+    let content = "Hello, World!"
+    let html = "<" + tag + ">" + content + "</" + tag + ">"
+
+    Console.print("Generated HTML: " + html)
+    Console.print("")
+
+    // Test conditional
+    let isActive = true
+    let className = if isActive then "active" else "inactive"
+    Console.print("Class name: " + className)
+}
+
+let result = run main() with {}