Improve README badge colors and labels (#1889)

## Why

Make the README badges easier to distinguish while keeping their text
readable.

## How

Give each badge a distinct, familiar color with text contrast above
4.5:1. Rename the Ty label to Type Checker and the Ruff label to
Formatter.

README.md

@@ -7,13 +7,13 @@
   </picture>
 </h1>
 
-[![License: AGPL v3](https://img.shields.io/badge/License-AGPL_v3-blue.svg?style=for-the-badge)](https://github.com/Alishahryar1/free-claude-code/blob/main/LICENSE)
+[![License: AGPL v3](https://img.shields.io/badge/License-AGPL_v3-2e7d32.svg?style=for-the-badge)](https://github.com/Alishahryar1/free-claude-code/blob/main/LICENSE)
 [![Python 3.14](https://img.shields.io/badge/python-3.14-3776ab.svg?style=for-the-badge&logo=python&logoColor=white)](https://www.python.org/downloads/)
 [![Package Manager: uv](assets/package-manager-uv.svg)](https://github.com/astral-sh/uv)
-[![Testing: Pytest](https://img.shields.io/badge/Testing-Pytest-00c0ff.svg?style=for-the-badge)](https://github.com/Alishahryar1/free-claude-code/actions/workflows/tests.yml)
-[![Type checking: Ty](https://img.shields.io/badge/type%20checking-ty-ffcc00.svg?style=for-the-badge)](https://pypi.org/project/ty/)
-[![Code style: Ruff](https://img.shields.io/badge/code%20formatting-ruff-f5a623.svg?style=for-the-badge)](https://github.com/astral-sh/ruff)
-[![Logging: Loguru](https://img.shields.io/badge/logging-loguru-4ecdc4.svg?style=for-the-badge)](https://github.com/Delgan/loguru)
+[![Testing: Pytest](https://img.shields.io/badge/Testing-Pytest-c62828.svg?style=for-the-badge)](https://github.com/Alishahryar1/free-claude-code/actions/workflows/tests.yml)
+[![Type Checker: Ty](https://img.shields.io/badge/Type%20Checker-ty-fdd835.svg?style=for-the-badge)](https://pypi.org/project/ty/)
+[![Formatter: Ruff](https://img.shields.io/badge/Formatter-ruff-bf4b00.svg?style=for-the-badge)](https://github.com/astral-sh/ruff)
+[![Logging: Loguru](https://img.shields.io/badge/logging-loguru-6b7280.svg?style=for-the-badge)](https://github.com/Delgan/loguru)
 
 [Quick Start](#quick-start) · [Providers](#choose-a-provider) · [Clients](#connect-your-client) · [Integrations](#optional-integrations) · [Manage](#manage-your-installation)
 

assets/package-manager-uv.svg

@@ -2,7 +2,7 @@
   <title>Package Manager: uv</title>
   <!-- Bolt artwork from astral-sh/uv assets/badge/v0.json. -->
   <path fill="#555" d="M0 0h145v28H0z"/>
-  <path fill="#261230" d="M145 0h55v28h-55z"/>
+  <path fill="#6a1b9a" d="M145 0h55v28h-55z"/>
   <g fill="#fff" text-anchor="middle" font-family="Verdana,Geneva,DejaVu Sans,sans-serif" font-size="10" letter-spacing="1">
     <text x="72.5" y="18">PACKAGE MANAGER</text>
     <text x="182" y="18">UV</text>