fix: suppress editor warnings for Tailwind at-rules

- Add eslint-disable comments around @tailwind directives
- Resolves 'Unknown at rule @tailwind' warnings in CSS editors
- Comments clearly mark tailwindcss section for maintainability

web/static/input.css

@@ -1,6 +1,10 @@
+/* tailwindcss start - suppress at-rule warnings */
+/* eslint-disable */
 @tailwind base;
 @tailwind components;
 @tailwind utilities;
+/* eslint-enable */
+/* tailwindcss end */
 
 @layer base {
   :root {