chore(release): 4.6.0 - SPDD & Radix UI Design System

- Bump version to 4.6.0, update CHANGELOG and README counts to 626
- Fix listSkillIds to only include dirs with SKILL.md (SPDD excluded from catalog)
- Regenerate catalog and index after PR 47/48 merge

README.md

@@ -1,6 +1,6 @@
-# 🌌 Antigravity Awesome Skills: 625+ Agentic Skills for Claude Code, Gemini CLI, Cursor, Copilot & More
+# 🌌 Antigravity Awesome Skills: 626+ Agentic Skills for Claude Code, Gemini CLI, Cursor, Copilot & More
 
-> **The Ultimate Collection of 625+ Universal Agentic Skills for AI Coding Assistants — Claude Code, Gemini CLI, Codex CLI, Antigravity IDE, GitHub Copilot, Cursor, OpenCode**
+> **The Ultimate Collection of 626+ Universal Agentic Skills for AI Coding Assistants — Claude Code, Gemini CLI, Codex CLI, Antigravity IDE, GitHub Copilot, Cursor, OpenCode**
 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Claude Code](https://img.shields.io/badge/Claude%20Code-Anthropic-purple)](https://claude.ai)
@@ -11,7 +11,7 @@
 [![OpenCode](https://img.shields.io/badge/OpenCode-CLI-gray)](https://github.com/opencode-ai/opencode)
 [![Antigravity](https://img.shields.io/badge/Antigravity-DeepMind-red)](https://github.com/sickn33/antigravity-awesome-skills)
 
-**Antigravity Awesome Skills** is a curated, battle-tested library of **624 high-performance agentic skills** designed to work seamlessly across all major AI coding assistants:
+**Antigravity Awesome Skills** is a curated, battle-tested library of **626 high-performance agentic skills** designed to work seamlessly across all major AI coding assistants:
 
 - 🟣 **Claude Code** (Anthropic CLI)
 - 🔵 **Gemini CLI** (Google DeepMind)
@@ -29,7 +29,7 @@ This repository provides essential skills to transform your AI assistant into a
 - [🔌 Compatibility & Invocation](#compatibility--invocation)
 - [📦 Features & Categories](#features--categories)
 - [🎁 Curated Collections (Bundles)](#curated-collections)
-- [📚 Browse 625+ Skills](#browse-625-skills)
+- [📚 Browse 626+ Skills](#browse-626-skills)
 - [🛠️ Installation](#installation)
 - [🤝 How to Contribute](#how-to-contribute)
 - [👥 Contributors & Credits](#credits--sources)
@@ -124,7 +124,7 @@ The repository is organized into specialized domains to transform your AI into a
 
 [Check out our Starter Packs in docs/BUNDLES.md](docs/BUNDLES.md) to find the perfect toolkit for your role.
 
-## Browse 625+ Skills
+## Browse 626+ Skills
 
 We have moved the full skill registry to a dedicated catalog to keep this README clean.