Remove Tailwind and simplify CSS build process

- Remove Tailwind CSS and related dependencies (tailwindcss, @tailwindcss/cli, bun-plugin-tailwind)
- Remove unused dependencies (lenis, @paper-design/shaders, three)
- Convert @theme variables to CSS custom properties in :root
- Add minimal CSS reset for browser consistency
- Update server to serve /css/* and /js/* routes directly
- Fix conflicting CSS rules that broke commands section layout
- Delete bunfig.toml (no longer needed without Tailwind plugin)

The site now uses native CSS imports via Bun's built-in bundler,
eliminating the need for separate Tailwind compilation step.

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

server/index.js

@@ -15,7 +15,7 @@ const server = serve({
   routes: {
     "/": homepage,
 
-    // Static assets
+    // Static assets - all public subdirectories
     "/assets/*": async (req) => {
       const url = new URL(req.url);
       const filePath = `./public${url.pathname}`;
@@ -25,6 +25,28 @@ const server = serve({
       }
       return new Response("Not Found", { status: 404 });
     },
+    "/css/*": async (req) => {
+      const url = new URL(req.url);
+      const filePath = `./public${url.pathname}`;
+      const assetFile = file(filePath);
+      if (await assetFile.exists()) {
+        return new Response(assetFile, {
+          headers: { "Content-Type": "text/css" }
+        });
+      }
+      return new Response("Not Found", { status: 404 });
+    },
+    "/js/*": async (req) => {
+      const url = new URL(req.url);
+      const filePath = `./public${url.pathname}`;
+      const assetFile = file(filePath);
+      if (await assetFile.exists()) {
+        return new Response(assetFile, {
+          headers: { "Content-Type": "application/javascript" }
+        });
+      }
+      return new Response("Not Found", { status: 404 });
+    },
     
     // API: Get all skills
     "/api/skills": {