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/signal-exit/dist/cjs/browser.js

@@ -0,0 +1,10 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.unload = exports.load = exports.onExit = void 0;
+const onExit = () => () => { };
+exports.onExit = onExit;
+const load = () => { };
+exports.load = load;
+const unload = () => { };
+exports.unload = unload;
+//# sourceMappingURL=browser.js.map