feat: Add Official Microsoft & Gemini Skills (845+ Total)

🚀 Impact

Significantly expands the capabilities of **Antigravity Awesome Skills** by integrating official skill collections from **Microsoft** and **Google Gemini**. This update increases the total skill count to **845+**, making the library even more comprehensive for AI coding assistants.

✨ Key Changes

1. New Official Skills

- **Microsoft Skills**: Added a massive collection of official skills from [microsoft/skills](https://github.com/microsoft/skills).
  - Includes Azure, .NET, Python, TypeScript, and Semantic Kernel skills.
  - Preserves the original directory structure under `skills/official/microsoft/`.
  - Includes plugin skills from the `.github/plugins` directory.
- **Gemini Skills**: Added official Gemini API development skills under `skills/gemini-api-dev/`.

2. New Scripts & Tooling

- **`scripts/sync_microsoft_skills.py`**: A robust synchronization script that:
  - Clones the official Microsoft repository.
  - Preserves the original directory heirarchy.
  - Handles symlinks and plugin locations.
  - Generates attribution metadata.
- **`scripts/tests/inspect_microsoft_repo.py`**: Debug tool to inspect the remote repository structure.
- **`scripts/tests/test_comprehensive_coverage.py`**: Verification script to ensure 100% of skills are captured during sync.

3. Core Improvements

- **`scripts/generate_index.py`**: Enhanced frontmatter parsing to safely handle unquoted values containing `@` symbols and commas (fixing issues with some Microsoft skill descriptions).
- **`package.json`**: Added `sync:microsoft` and `sync:all-official` scripts for easy maintenance.

4. Documentation

- Updated `README.md` to reflect the new skill counts (845+) and added Microsoft/Gemini to the provider list.
- Updated `CATALOG.md` and `skills_index.json` with the new skills.

🧪 Verification

- Ran `scripts/tests/test_comprehensive_coverage.py` to verify all Microsoft skills are detected.
- Validated `generate_index.py` fixes by successfully indexing the new skills.

README.md

@@ -1,6 +1,6 @@
-# 🌌 Antigravity Awesome Skills: 715+ Agentic Skills for Claude Code, Gemini CLI, Cursor, Copilot & More
+# 🌌 Antigravity Awesome Skills: 845+ Agentic Skills for Claude Code, Gemini CLI, Cursor, Copilot & More
 
-> **The Ultimate Collection of 715+ Universal Agentic Skills for AI Coding Assistants — Claude Code, Gemini CLI, Codex CLI, Antigravity IDE, GitHub Copilot, Cursor, OpenCode, AdaL**
+> **The Ultimate Collection of 845+ Universal Agentic Skills for AI Coding Assistants — Claude Code, Gemini CLI, Codex CLI, Antigravity IDE, GitHub Copilot, Cursor, OpenCode, AdaL**
 
 [![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)
@@ -16,7 +16,7 @@
 
 If this project helps you, you can [support it here](https://buymeacoffee.com/sickn33) or simply ⭐ the repo.
 
-**Antigravity Awesome Skills** is a curated, battle-tested library of **715 high-performance agentic skills** designed to work seamlessly across all major AI coding assistants:
+**Antigravity Awesome Skills** is a curated, battle-tested library of **845 high-performance agentic skills** designed to work seamlessly across all major AI coding assistants:
 
 - 🟣 **Claude Code** (Anthropic CLI)
 - 🔵 **Gemini CLI** (Google DeepMind)
@@ -27,7 +27,7 @@ If this project helps you, you can [support it here](https://buymeacoffee.com/si
 - ⚪ **OpenCode** (Open-source CLI)
 - 🌸 **AdaL CLI** (Self-evolving Coding Agent)
 
-This repository provides essential skills to transform your AI assistant into a **full-stack digital agency**, including official capabilities from **Anthropic**, **OpenAI**, **Google**, **Supabase**, and **Vercel Labs**.
+This repository provides essential skills to transform your AI assistant into a **full-stack digital agency**, including official capabilities from **Anthropic**, **OpenAI**, **Google**, **Microsoft**, **Supabase**, and **Vercel Labs**.
 
 ## Table of Contents
 
@@ -38,7 +38,7 @@ This repository provides essential skills to transform your AI assistant into a
 - [🎁 Curated Collections (Bundles)](#curated-collections)
 - [🧭 Antigravity Workflows](#antigravity-workflows)
 - [📦 Features & Categories](#features--categories)
-- [📚 Browse 715+ Skills](#browse-715-skills)
+- [📚 Browse 845+ Skills](#browse-845-skills)
 - [🤝 How to Contribute](#how-to-contribute)
 - [🤝 Community](#community)
 - [☕ Support the Project](#support-the-project)
@@ -221,20 +221,24 @@ npx antigravity-awesome-skills
 They help you avoid picking from 700+ skills one by one.
 
 What bundles are:
+
 - Recommended starting sets for common workflows.
 - A shortcut for onboarding and faster execution.
 
 What bundles are not:
+
 - Not a separate install.
 - Not a locked preset.
 
 How to use bundles:
+
 1. Install the repository once.
 2. Pick one bundle in [docs/BUNDLES.md](docs/BUNDLES.md).
 3. Start with 3-5 skills from that bundle in your prompt.
 4. Add more only when needed.
 
 Examples:
+
 - Building a SaaS MVP: `Essentials` + `Full-Stack Developer` + `QA & Testing`.
 - Hardening production: `Security Developer` + `DevOps & Cloud` + `Observability & Monitoring`.
 - Shipping OSS changes: `Essentials` + `OSS Maintainer`.
@@ -247,10 +251,12 @@ Bundles help you choose skills. Workflows help you execute them in order.
 - Use workflows when you need step-by-step execution for a concrete goal.
 
 Start here:
+
 - [docs/WORKFLOWS.md](docs/WORKFLOWS.md): human-readable playbooks.
 - [data/workflows.json](data/workflows.json): machine-readable workflow metadata.
 
 Initial workflows include:
+
 - Ship a SaaS MVP
 - Security Audit for a Web App
 - Build an AI Agent System
@@ -274,7 +280,7 @@ The repository is organized into specialized domains to transform your AI into a
 
 Counts change as new skills are added. For the current full registry, see [CATALOG.md](CATALOG.md).
 
-## Browse 715+ Skills
+## Browse 845+ Skills
 
 We have moved the full skill registry to a dedicated catalog to keep this README clean.
 
@@ -308,14 +314,17 @@ Please ensure your skill follows the Antigravity/Claude Code best practices.
 Support is optional. This project stays free and open-source for everyone.
 
 If this repository saves you time or helps you ship faster, you can support ongoing maintenance:
+
 - [☕ Buy me a book on Buy Me a Coffee](https://buymeacoffee.com/sickn33)
 
 Where support goes:
+
 - Skill curation, testing, and quality validation.
 - Documentation updates, examples, and onboarding improvements.
 - Faster triage and review of community issues and PRs.
 
 Prefer non-financial support:
+
 - Star the repository.
 - Open clear, reproducible issues.
 - Submit PRs (skills, docs, fixes).
@@ -346,6 +355,8 @@ This collection would not be possible without the incredible work of the Claude
 - **[vercel-labs/agent-skills](https://github.com/vercel-labs/agent-skills)**: Vercel Labs official skills - React Best Practices, Web Design Guidelines.
 - **[openai/skills](https://github.com/openai/skills)**: OpenAI Codex skills catalog - Agent skills, Skill Creator, Concise Planning.
 - **[supabase/agent-skills](https://github.com/supabase/agent-skills)**: Supabase official skills - Postgres Best Practices.
+- **[microsoft/skills](https://github.com/microsoft/skills)**: Official Microsoft skills - Azure cloud services, Bot Framework, Cognitive Services, and enterprise development patterns across .NET, Python, TypeScript, Go, Rust, and Java.
+- **[google-gemini/gemini-skills](https://github.com/google-gemini/gemini-skills)**: Official Gemini skills - Gemini API, SDK and model interactions.
 
 ### Community Contributors