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/foreground-child/dist/esm/proxy-signals.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"proxy-signals.d.ts","sourceRoot":"","sources":["../../src/proxy-signals.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,KAAK,YAAY,EAAE,MAAM,eAAe,CAAA;AAGjD;;GAEG;AACH,eAAO,MAAM,YAAY,UAAW,YAAY,eA4B/C,CAAA"}