Add semantic state and log analysis tools to MCP server (#6)

* feat: add Model Context Protocol (MCP) server

Add MCP server support to PM2 for process management through MCP-compatible clients.

Features:
- New pm2-mcp binary that exposes PM2 process management via MCP
- 12 MCP tools for process lifecycle, logging, and monitoring:
  - pm2_list_processes, pm2_describe_process
  - pm2_start_process, pm2_restart_process, pm2_reload_process
  - pm2_stop_process, pm2_delete_process
  - pm2_flush_logs, pm2_reload_logs, pm2_tail_logs
  - pm2_dump, pm2_kill_daemon
- 2 MCP resources for real-time process information:
  - pm2://processes (list)
  - pm2://process/{id} (detail)
- Automatic sandbox environment detection and adaptation
- Support for stdio and HTTP (Streamable) transports
- Client notifications for sandbox status and recommendations
- Compatible with Claude Code, Codex, and other MCP clients

Implementation:
- New lib/mcp/server.js with full MCP server implementation
- Uses @modelcontextprotocol/sdk for MCP protocol
- Sandbox detection checks home directory writability and environment
- Auto-selects writable PM2_HOME in sandboxed environments
- No-daemon mode by default for MCP client compatibility
- Comprehensive environment variable configuration

Documentation:
- README with MCP server quickstart and setup commands
- Environment variables table (PM2_MCP_*, PM2_HOME, etc.)
- Sandbox detection explanation
- Tool and resource documentation
- Justfile recipes for easy registration with MCP clients

Related:
- Enables pkgx packaging: pkgxdev/pantry#11219
- Development fork: https://github.com/PromptExecution/pm2-mcp
- MCP Specification: https://modelcontextprotocol.io/

Co-authored-by: Claude <noreply@anthropic.com>

* Add semantic state and log analysis tools to MCP server

* Update README.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update lib/mcp/server.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update lib/mcp/server.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update lib/mcp/server.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Brian Horakh <35611074+elasticdotventures@users.noreply.github.com>

* Update lib/mcp/server.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Brian Horakh <35611074+elasticdotventures@users.noreply.github.com>

* Update lib/mcp/server.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Brian Horakh <35611074+elasticdotventures@users.noreply.github.com>

* Initial plan (#8)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

* [WIP] Update semantic state and log analysis tools for MCP server (#7)

* Initial plan

* Add explanation of Codex CLI tool in README

Co-authored-by: elasticdotventures <35611074+elasticdotventures@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: elasticdotventures <35611074+elasticdotventures@users.noreply.github.com>

---------

Signed-off-by: Brian Horakh <35611074+elasticdotventures@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>

Author: 4 people

README.md

@@ -38,7 +38,7 @@ PM2 is constantly assailed by [more than 1800 tests](https://github.com/Unitech/
 
 Official website: [https://pm2.keymetrics.io/](https://pm2.keymetrics.io/)
 
-Works on Linux (stable) & macOS (stable) & Windows (stable). All Node.js versions are supported starting Node.js 22.0.0 and Bun since v1
+Works on Linux (stable) & macOS (stable) & Windows (stable). Node.js 22.0.0 and later are supported, and Bun since v1
 
 
 ## Installing PM2
@@ -241,6 +241,8 @@ claude mcp get pm2-mcp
 ```
 
 #### Codex (stdio)
+[Codex](https://developers.openai.com/codex/mcp) is OpenAI's CLI tool for AI-assisted development with MCP support.
+
 ```bash
 # Add pm2-mcp to Codex
 codex mcp add pm2-mcp -- pm2-mcp