Add 8 new skills for development tools and workflows

This PR adds the following skills:
- azure-devops-cli: Azure DevOps operations via CLI
- chrome-devtools: Browser automation and debugging
- gh-cli: GitHub CLI comprehensive reference
- git-commit: Smart git commit with conventional commits
- mcp-cli: Model Context Protocol server interface
- plantuml-ascii: ASCII diagram generation
- prd: Product Requirements Document generation
- refactor: Surgical code refactoring guidance

All skills follow the project conventions with proper SKILL.md frontmatter.

skills/mcp-cli/SKILL.md

@@ -0,0 +1,78 @@
+---
+name: mcp-cli
+description: Interface for MCP (Model Context Protocol) servers via CLI. Use when you need to interact with external tools, APIs, or data sources through MCP servers, list available MCP servers/tools, or call MCP tools from command line.
+---
+
+# MCP-CLI
+
+Access MCP servers through the command line. MCP enables interaction with external systems like GitHub, filesystems, databases, and APIs.
+
+## Commands
+
+| Command                            | Output                          |
+| ---------------------------------- | ------------------------------- |
+| `mcp-cli`                          | List all servers and tool names |
+| `mcp-cli <server>`                 | Show tools with parameters      |
+| `mcp-cli <server>/<tool>`          | Get tool JSON schema            |
+| `mcp-cli <server>/<tool> '<json>'` | Call tool with arguments        |
+| `mcp-cli grep "<glob>"`            | Search tools by name            |
+
+**Add `-d` to include descriptions** (e.g., `mcp-cli filesystem -d`)
+
+## Workflow
+
+1. **Discover**: `mcp-cli` → see available servers and tools
+2. **Explore**: `mcp-cli <server>` → see tools with parameters
+3. **Inspect**: `mcp-cli <server>/<tool>` → get full JSON input schema
+4. **Execute**: `mcp-cli <server>/<tool> '<json>'` → run with arguments
+
+## Examples
+
+```bash
+# List all servers and tool names
+mcp-cli
+
+# See all tools with parameters
+mcp-cli filesystem
+
+# With descriptions (more verbose)
+mcp-cli filesystem -d
+
+# Get JSON schema for specific tool
+mcp-cli filesystem/read_file
+
+# Call the tool
+mcp-cli filesystem/read_file '{"path": "./README.md"}'
+
+# Search for tools
+mcp-cli grep "*file*"
+
+# JSON output for parsing
+mcp-cli filesystem/read_file '{"path": "./README.md"}' --json
+
+# Complex JSON with quotes (use heredoc or stdin)
+mcp-cli server/tool <<EOF
+{"content": "Text with 'quotes' inside"}
+EOF
+
+# Or pipe from a file/command
+cat args.json | mcp-cli server/tool
+
+# Find all TypeScript files and read the first one
+mcp-cli filesystem/search_files '{"path": "src/", "pattern": "*.ts"}' --json | jq -r '.content[0].text' | head -1 | xargs -I {} sh -c 'mcp-cli filesystem/read_file "{\"path\": \"{}\"}"'
+```
+
+## Options
+
+| Flag         | Purpose                   |
+| ------------ | ------------------------- |
+| `-j, --json` | JSON output for scripting |
+| `-r, --raw`  | Raw text content          |
+| `-d`         | Include descriptions      |
+
+## Exit Codes
+
+- `0`: Success
+- `1`: Client error (bad args, missing config)
+- `2`: Server error (tool failed)
+- `3`: Network error