feat: major UI/UX overhaul, snippets system, and performance fixes

app/globals.css

@@ -2,6 +2,20 @@
 @tailwind components;
 @tailwind utilities;
 
+/* Grain Effect */
+.grain-overlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  z-index: 9999;
+  pointer-events: none;
+  opacity: 0.04;
+  mix-blend-mode: overlay;
+  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
+}
+
 :root {
     /* Warm Brown & Off-White Palette */
     --background: #faf8f3; /* Warm off-white */