Install MCP configs for more clients

[alexstyl]

Summary

• add mcp install support for OpenCode, Antigravity, Claude Code, Codex, and Cursor
• write each client's expected stdio config for composables mcp start
• preserve existing MCP server entries and require --overwrite for conflicts

New install commands

composables mcp install --client opencode
composables mcp install --client antigravity
composables mcp install --client claude
composables mcp install --client codex
composables mcp install --client cursor

All new stdio clients are configured to launch:

composables mcp start

Config files written

OpenCode

Writes project-local opencode.json:

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "composables": {
      "type": "local",
      "command": ["composables", "mcp", "start"],
      "enabled": true
    }
  }
}

Antigravity

Writes user-level ~/.gemini/config/mcp_config.json:

{
  "mcpServers": {
    "composables": {
      "command": "composables",
      "args": ["mcp", "start"]
    }
  }
}

Claude Code

Writes project-local .mcp.json:

{
  "mcpServers": {
    "composables": {
      "command": "composables",
      "args": ["mcp", "start"]
    }
  }
}

Codex

Writes project-local .codex/config.toml:

[mcp_servers.composables]
command = "composables"
args = ["mcp", "start"]

Cursor

Writes project-local .cursor/mcp.json:

{
  "mcpServers": {
    "composables": {
      "command": "composables",
      "args": ["mcp", "start"]
    }
  }
}

Config sources checked

• shadcn MCP setup: https://ui.shadcn.com/docs/mcp
• OpenCode MCP config: https://opencode.ai/docs/mcp-servers/
• Claude Code MCP config: https://code.claude.com/docs/en/mcp
• Codex MCP config: https://developers.openai.com/codex/mcp
• Cursor MCP config: https://cursor.com/docs/mcp.md
• Antigravity MCP config: https://antigravity.google/docs/mcp

Verification

• ./gradlew spotlessCheck :cli:test :cli:integrationTest