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/util/prefixSelector.js

@@ -0,0 +1,33 @@
+import parser from 'postcss-selector-parser'
+
+/**
+ * @template {string | import('postcss-selector-parser').Root} T
+ *
+ * Prefix all classes in the selector with the given prefix
+ *
+ * It can take either a string or a selector AST and will return the same type
+ *
+ * @param {string} prefix
+ * @param {T} selector
+ * @param {boolean} prependNegative
+ * @returns {T}
+ */
+export default function (prefix, selector, prependNegative = false) {
+  if (prefix === '') {
+    return selector
+  }
+
+  /** @type {import('postcss-selector-parser').Root} */
+  let ast = typeof selector === 'string' ? parser().astSync(selector) : selector
+
+  ast.walkClasses((classSelector) => {
+    let baseClass = classSelector.value
+    let shouldPlaceNegativeBeforePrefix = prependNegative && baseClass.startsWith('-')
+
+    classSelector.value = shouldPlaceNegativeBeforePrefix
+      ? `-${prefix}${baseClass.slice(1)}`
+      : `${prefix}${baseClass}`
+  })
+
+  return typeof selector === 'string' ? ast.toString() : ast
+}