feat: implement build system and development workflow

- Add npm scripts for CSS/JS compilation (build:css, build:js, build)
- Create PowerShell build automation script
- Document development workflow in README
- Add troubleshooting guide for build issues
- Specify proper file structure and compilation process

Supports Tailwind CSS v3.4.0 and esbuild bundling with source maps.

node_modules/tailwindcss/src/lib/substituteScreenAtRules.js

@@ -0,0 +1,19 @@
+import { normalizeScreens } from '../util/normalizeScreens'
+import buildMediaQuery from '../util/buildMediaQuery'
+
+export default function ({ tailwindConfig: { theme } }) {
+  return function (css) {
+    css.walkAtRules('screen', (atRule) => {
+      let screen = atRule.params
+      let screens = normalizeScreens(theme.screens)
+      let screenDefinition = screens.find(({ name }) => name === screen)
+
+      if (!screenDefinition) {
+        throw atRule.error(`No \`${screen}\` screen found.`)
+      }
+
+      atRule.name = 'media'
+      atRule.params = buildMediaQuery(screenDefinition)
+    })
+  }
+}