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/git-archaeologist/README.md

@@ -0,0 +1,55 @@
+<div align="center">
+
+# 🏛️ Git Archaeologist
+
+### Dig Through Code History to Find Bugs and Answers
+
+---
+
+<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
+
+Analyze Git history to understand code evolution, find bugs, and track changes.
+
+## Features
+
+- **Bug Bisect**: Binary search through commits to find when bug appeared
+- **Blame Analysis**: Line-by-line authorship
+- **Hotspot Detection**: Frequently changed files
+- **Author Stats**: Contribution metrics
+
+## Quick Start
+
+```bash
+# Find bad commit with bisect
+git bisect start
+git bisect bad
+git bisect good v1.0.0
+
+# File history
+git log --oneline --follow filename.py
+
+# Hotspots
+git log --name-only --pretty=format: | sort | uniq -c | sort -nr | head -20
+```
+
+---
+
+<p align="center">
+  <a href="https://z.ai/subscribe?ic=R0K78RJKNW">Learn more about GLM 5</a>
+</p>