docs: update README with badges for PyPI, npm, tests, and linting

Author: g4bri3lDev

README.md

@@ -1,5 +1,10 @@
 # epaper-dithering
 
+[![PyPI](https://img.shields.io/pypi/v/epaper-dithering?style=flat-square)](https://pypi.org/project/epaper-dithering/)
+[![npm](https://img.shields.io/npm/v/@opendisplay/epaper-dithering?style=flat-square)](https://www.npmjs.com/package/@opendisplay/epaper-dithering)
+[![Python Tests](https://img.shields.io/github/actions/workflow/status/OpenDisplay-org/epaper-dithering/python-test.yml?style=flat-square&label=tests)](https://github.com/OpenDisplay-org/epaper-dithering/actions/workflows/python-test.yml)
+[![Python Lint](https://img.shields.io/github/actions/workflow/status/OpenDisplay-org/epaper-dithering/python-lint.yml?style=flat-square&label=lint)](https://github.com/OpenDisplay-org/epaper-dithering/actions/workflows/python-lint.yml)
+
 A monorepo containing dithering algorithm implementations for e-paper/e-ink displays in multiple languages.
 
 ## Packages
@@ -133,7 +138,6 @@ epaper-dithering/
 
 ## Future Plans
 
-- Base colors on real e-paper display colors (perceptual color matching)
 - Add s-curve tone mapping for better contrast
 - Rust implementation with bindings for Python/JavaScript/other languages
 - Web-based demo/playground

packages/javascript/README.md

@@ -1,5 +1,7 @@
 # @opendisplay/epaper-dithering
 
+[![npm](https://img.shields.io/npm/v/@opendisplay/epaper-dithering?style=flat-square)](https://www.npmjs.com/package/@opendisplay/epaper-dithering)
+
 High-quality dithering algorithms for e-paper/e-ink displays, implemented in TypeScript. Works in both browser and Node.js environments.
 
 ## Features

packages/python/README.md

@@ -1,5 +1,9 @@
 # epaper-dithering
 
+[![PyPI](https://img.shields.io/pypi/v/epaper-dithering?style=flat-square)](https://pypi.org/project/epaper-dithering/)
+[![Python Tests](https://img.shields.io/github/actions/workflow/status/OpenDisplay-org/epaper-dithering/python-test.yml?style=flat-square&label=tests)](https://github.com/OpenDisplay-org/epaper-dithering/actions/workflows/python-test.yml)
+[![Python Lint](https://img.shields.io/github/actions/workflow/status/OpenDisplay-org/epaper-dithering/python-lint.yml?style=flat-square&label=lint)](https://github.com/OpenDisplay-org/epaper-dithering/actions/workflows/python-lint.yml)
+
 Dithering algorithms optimized for e-ink/e-paper displays with limited color palettes.
 
 ## Installation