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/README.md

@@ -0,0 +1,125 @@
+# Claude Settings Optimizer
+
+Self-audit and optimize Claude configuration for maximum token efficiency.
+
+**Supports both Claude Code (CLI) and Claude Desktop (App).**
+
+## Purpose
+
+- **Diagnose all Claude errors** (8 categories covered)
+- Analyze token usage across MCP servers, CLAUDE.md, and extensions
+- Troubleshoot MCP connection issues
+- Identify optimization opportunities
+- Auto-fix common issues with backup safety (Code version)
+- Keep working context at 70%+ of 200K limit
+
+## Platform Versions
+
+| Version | Path | Use Case |
+|---------|------|----------|
+| **Claude Code** | `code/` | CLI with automated scripts |
+| **Claude Desktop** | `desktop/` | App-based manual guidance |
+
+## Claude Code Quick Start
+
+```bash
+# Install
+cd custom-skills/00-our-settings-audit/code
+chmod +x install.sh
+./install.sh
+
+# Run audit
+python3 scripts/run_audit.py
+
+# Apply fixes
+python3 scripts/auto_fix.py --apply
+```
+
+## Claude Desktop Quick Start
+
+Covers **8 error categories**:
+
+| Category | Example Errors |
+|----------|----------------|
+| Context/Input | "Exceed response limit" |
+| Output | "Response could not be fully generated" |
+| Length/File | "Message will exceed length limit", "Files larger than 10mb" |
+| Usage Limits | "5-hour limit reached", "X messages left" |
+| Server/Capacity | "Unexpected capacity constraints" |
+| MCP Connection | "Error connecting to [ServerName]" |
+| Account | "Account has been disabled", login errors |
+| Output Quality | Output cutoff, gibberish, mixed languages |
+
+**When encountering any error:**
+
+1. Use the Quick Diagnosis Tree in `desktop/SKILL.md`
+2. Follow category-specific troubleshooting steps
+3. Apply prevention checklist recommendations
+
+**For MCP issues**, share your config file:
+- macOS: `~/Library/Application Support/Claude/claude_desktop_config.json`
+- Windows: `%APPDATA%\Claude\claude_desktop_config.json`
+
+## What Gets Analyzed
+
+| Component | Checks |
+|-----------|--------|
+| **MCP Servers** | serverInstructions presence, token estimates, load strategy |
+| **CLAUDE.md** | Line count, token estimate, structure quality |
+| **Commands** | Frontmatter, description, size limits |
+| **Skills** | SKILL.md presence, size limits |
+| **Agents** | Tool restrictions |
+
+## Target Metrics
+
+| Metric | Target | Max |
+|--------|--------|-----|
+| CLAUDE.md tokens | 2,000 | 3,000 |
+| MCP tokens (with Tool Search) | 5,000 | 10,000 |
+| Baseline total | <30% | <40% |
+| Available for work | >70% | — |
+
+## Files
+
+```
+00-our-settings-audit/
+├── README.md
+├── code/                          # Claude Code (CLI)
+│   ├── CLAUDE.md                  # Skill directive
+│   ├── install.sh                 # Installation script
+│   ├── commands/
+│   │   └── settings-audit.md      # /settings-audit command
+│   ├── scripts/
+│   │   ├── run_audit.py           # Main orchestrator
+│   │   ├── analyze_tokens.py      # Token analysis
+│   │   ├── analyze_extensions.py
+│   │   └── auto_fix.py            # Auto-fix with backup
+│   └── references/
+│       └── token-optimization.md
+│
+└── desktop/                       # Claude Desktop (App)
+    ├── skill.yaml                 # Skill metadata
+    ├── SKILL.md                   # Diagnosis workflow (8 error categories)
+    ├── references/
+    │   ├── config-locations.md    # Config file paths
+    │   ├── mcp-token-estimates.md # Token budget guide
+    │   └── our-settings-audit.md  # Claude.ai project reference
+    └── examples/
+        └── sample-audit-report.md # Example output
+```
+
+## Auto-Fix Capabilities
+
+**Safe (automatic with backup):**
+- Add serverInstructions to MCP servers
+- Add frontmatter to commands
+
+**Manual review required:**
+- Disabling MCP servers
+- Restructuring CLAUDE.md
+- Removing extensions
+
+## Requirements
+
+- Python 3.8+
+- PyYAML (optional, for better frontmatter parsing)