Add add-azure-skills command to integrate 192 Microsoft Azure skills

- New command: add-azure-skills with bundle and individual skill install
- 5 curated bundles: quick-start (8), popular (21), ai-ml (8), devops (8), security (8)
- Auto-clone Microsoft Agent-Skills repo with cache and --refresh support
- Skip existing skills, report install/skip/missing counts
- Requires .agent init first, fully compatible with validate (78 checks pass)
- Update README with Azure skills usage guide and CLI reference

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -188,6 +188,40 @@ antigravity-superpowers init --force --backup
 
 With `--backup`, the existing `.agent` is renamed to `.agent-backup-2026-03-19T10-30-00` before the new profile is copied.
 
+### 6. Add Microsoft Azure skills
+
+Tích hợp 192 Azure skills từ [Microsoft Agent-Skills](https://github.com/MicrosoftDocs/Agent-Skills) vào project. Các skills này cung cấp tra cứu tài liệu Azure chính thức (troubleshooting, best practices, architecture, security...).
+
+```bash
+# Xem các bundle có sẵn
+antigravity-superpowers add-azure-skills --list-bundles
+
+# Cài bundle quick-start (8 skills cơ bản)
+antigravity-superpowers add-azure-skills --bundle quick-start
+
+# Cài bundle popular (21 skills phổ biến)
+antigravity-superpowers add-azure-skills --bundle popular
+
+# Cài từng skill riêng lẻ
+antigravity-superpowers add-azure-skills --skill azure-functions --skill azure-cosmos-db
+
+# Kết hợp bundle + skill riêng
+antigravity-superpowers add-azure-skills --bundle ai-ml --skill azure-container-apps
+
+# Xem toàn bộ 192 skills có sẵn
+antigravity-superpowers add-azure-skills --list-skills
+```
+
+**Bundles có sẵn:**
+
+| Bundle | Skills | Mô tả |
+| --- | --- | --- |
+| `quick-start` | 8 | App Service, Functions, Blob Storage, SQL, Key Vault, Monitor... |
+| `popular` | 21 | Các dịch vụ phổ biến nhất: Cosmos DB, AKS, Container Apps, Logic Apps... |
+| `ai-ml` | 8 | AI Services, AI Vision, Bot Service, Machine Learning, Foundry... |
+| `devops` | 8 | DevOps, Pipelines, Repos, Boards, Artifacts, Automation... |
+| `security` | 8 | Key Vault, RBAC, Policy, Sentinel, Defender, Firewall... |
+
 ---
 
 ## CLI Reference
@@ -196,15 +230,23 @@ With `--backup`, the existing `.agent` is renamed to `.agent-backup-2026-03-19T1
 antigravity-superpowers <command> [options]
 
 Commands:
-  init [dir]       Initialize .agent profile in a project
-  validate [dir]   Validate .agent profile in a project
-  list             List available skills
+  init [dir]               Initialize .agent profile in a project
+  validate [dir]           Validate .agent profile in a project
+  list                     List bundled skills
+  add-azure-skills [opts]  Add Microsoft Azure skills to a project
 
 Init options:
   -f, --force      Overwrite existing .agent directory
   -b, --backup     Backup existing .agent before overwrite (use with --force)
   -n, --dry-run    Preview files that would be copied
 
+Azure skills options:
+  -B, --bundle <name>    Install a bundle (quick-start, popular, ai-ml, devops, security)
+  -s, --skill <name>     Install individual skill (repeatable)
+  --list-bundles          List available bundles
+  --list-skills           List all 192 Azure skills
+  --refresh               Re-download skill repository
+
 Global options:
   -v, --version    Show version
   -h, --help       Show help