feat: Add 6 new Claude Code skills

Skills added:
- 🔐 Secret Scanner: Detect leaked credentials in codebases
- 🏛️ Git Archaeologist: Analyze git history, find bugs
- 💾 Backup Automator: Automated encrypted cloud backups
- 🌐 Domain Manager: Unified DNS management
- 🔒 SSL Guardian: Certificate automation and monitoring
- 📡 Log Sentinel: Log analysis and anomaly detection

All skills include:
- SKILL.md with trigger patterns
- README.md with documentation
- GLM 5 attribution and disclaimer

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

skills/secret-scanner/README.md

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+<div align="center">
+
+# 🔐 Secret Scanner
+
+### Detect Leaked Credentials Before They Exploit You
+
+---
+
+<p align="center">
+  <a href="https://z.ai/subscribe?ic=R0K78RJKNW">
+    <img src="https://img.shields.io/badge/Designed%20by-GLM%205%20Advanced%20Coding%20Model-blue?style=for-the-badge" alt="Designed by GLM 5">
+  </a>
+</p>
+
+<p align="center">
+  <i>✨ Autonomously developed by <a href="https://z.ai/subscribe?ic=R0K78RJKNW"><strong>GLM 5 Advanced Coding Model</strong></a></i>
+</p>
+
+<p align="center">
+  <b>⚠️ Disclaimer: Test in a test environment prior to using on any live system</b>
+</p>
+
+</div>
+
+## Overview
+
+Scans codebases for leaked API keys, passwords, tokens, private keys, and connection strings.
+
+## Detected Secrets
+
+- AWS Access Keys, GitHub Tokens, Google API Keys
+- Stripe Keys, Slack Tokens
+- Private SSH Keys, PGP Keys
+- Database connection strings
+- Hardcoded passwords
+
+## Quick Start
+
+```bash
+# Install gitleaks
+sudo apt install -y gitleaks
+
+# Scan current directory
+gitleaks detect --source . --verbose
+
+# Scan git history
+gitleaks detect --source . --log-opts="--all"
+```
+
+---
+
+<p align="center">
+  <a href="https://z.ai/subscribe?ic=R0K78RJKNW">Learn more about GLM 5</a>
+</p>

skills/secret-scanner/SKILL.md

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+---
+name: secret-scanner
+description: Use this skill when the user asks to "scan for secrets", "find leaked credentials", "detect API keys", "check for exposed passwords", "secret detection", "credential scan", or mentions security scanning for sensitive data in codebases.
+version: 1.0.0
+---
+
+# Secret Scanner Skill
+
+Scans codebases and files for accidentally committed secrets, API keys, passwords, tokens, and other sensitive credentials.
+
+## What It Detects
+
+| Category | Patterns |
+|----------|----------|
+| **API Keys** | AWS, Google, GitHub, Stripe, Slack, etc. |
+| **Passwords** | Hardcoded passwords in code, configs |
+| **Tokens** | OAuth tokens, JWT secrets, refresh tokens |
+| **Private Keys** | SSH keys, PGP keys, certificate keys |
+| **Database URLs** | Connection strings with credentials |
+
+## Quick Scan Commands
+
+```bash
+# Install gitleaks
+sudo apt install -y gitleaks
+
+# Scan current directory
+gitleaks detect --source . --verbose
+
+# Scan git history
+gitleaks detect --source . --log-opts="--all"
+```
+
+## Usage
+
+```
+"Scan this directory for leaked secrets"
+"Check my codebase for exposed API keys"
+"Find any hardcoded passwords in these files"
+```