feat: Add installation tool, Claude.ai export, and skill standardization (#1)

## Summary

- Add portable installation tool (`install.sh`) for cross-machine setup
- Add Claude.ai export files with proper YAML frontmatter
- Add multi-agent-guide v2.0 with consolidated framework template
- Rename `00-claude-code-setting` → `00-our-settings-audit` (avoid reserved word)
- Add YAML frontmatter to 25+ SKILL.md files for Claude Desktop compatibility

## Commits Included

- `93f604a` feat: Add portable installation tool for cross-machine setup
- `9b84104` feat: Add Claude.ai export for portable skill installation
- `f7ab973` fix: Add YAML frontmatter to Claude.ai export files
- `3fed49a` feat(multi-agent-guide): Add v2.0 with consolidated framework
- `3be26ef` refactor: Rename settings-audit skill and add YAML frontmatter

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

custom-skills/00-our-settings-audit/code/install.sh

@@ -0,0 +1,68 @@
+#!/bin/bash
+# Claude Code Settings Optimizer - Installation Script
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+CLAUDE_DIR="${HOME}/.claude"
+
+echo "Claude Code Settings Optimizer - Installer"
+echo "==========================================="
+echo ""
+
+# Create directories
+echo "Creating directories..."
+mkdir -p "${CLAUDE_DIR}/commands"
+mkdir -p "${CLAUDE_DIR}/scripts/settings-audit"
+mkdir -p "${CLAUDE_DIR}/references"
+
+# Install command
+echo "Installing /settings-audit command..."
+cp "${SCRIPT_DIR}/commands/settings-audit.md" "${CLAUDE_DIR}/commands/"
+
+# Install scripts
+echo "Installing scripts..."
+cp "${SCRIPT_DIR}/scripts/"*.py "${CLAUDE_DIR}/scripts/settings-audit/"
+chmod +x "${CLAUDE_DIR}/scripts/settings-audit/"*.py
+
+# Install references
+echo "Installing references..."
+cp "${SCRIPT_DIR}/references/"*.md "${CLAUDE_DIR}/references/"
+
+# Check Python
+echo ""
+echo "Checking Python..."
+if command -v python3 &> /dev/null; then
+    echo "  Python 3: $(python3 --version)"
+else
+    echo "  Warning: Python 3 not found"
+fi
+
+# Check PyYAML (optional)
+if python3 -c "import yaml" 2>/dev/null; then
+    echo "  PyYAML: installed"
+else
+    echo "  PyYAML: not installed (optional)"
+    echo "  Install with: pip3 install pyyaml"
+fi
+
+echo ""
+echo "Installation complete!"
+echo ""
+echo "Installed to:"
+echo "  Command:    ${CLAUDE_DIR}/commands/settings-audit.md"
+echo "  Scripts:    ${CLAUDE_DIR}/scripts/settings-audit/"
+echo "  References: ${CLAUDE_DIR}/references/"
+echo ""
+echo "Usage:"
+echo "  In Claude Code: /settings-audit"
+echo ""
+echo "  Or run directly:"
+echo "  python3 ${CLAUDE_DIR}/scripts/settings-audit/run_audit.py"
+echo ""
+echo "  Auto-fix (preview):"
+echo "  python3 ${CLAUDE_DIR}/scripts/settings-audit/auto_fix.py"
+echo ""
+echo "  Auto-fix (apply):"
+echo "  python3 ${CLAUDE_DIR}/scripts/settings-audit/auto_fix.py --apply"
+echo ""