Add ubcode Claude Code plugin to pharaoh marketplace

[patdhlk]

Summary

Pharaoh's marketplace (marketplace.json) currently only lists the pharaoh plugin itself. We should add a companion ubcode Claude Code plugin to the marketplace so that ubcode customers can install enhanced sphinx-needs support for Claude Code directly from the pharaoh marketplace.

Background

• Pharaoh already references ubCode MCP as Tier 2 in its three-tier data access pattern (skills/shared/data-access.md, line 122–131). Skills check for MCP tools containing ubcode or useblocks and use them for querying the needs index, resolving links, and validating schema.
• ubcode is a VS Code extension that provides a full LSP for reStructuredText and sphinx-needs, including an embedded MCP server (server/mcp/ubc_mcp_server). It offers completions, go-to-definition, references, hover, formatting, diagnostics, and a needs graph viewer.
• Claude Code supports installing plugins from GitHub marketplaces via /plugin marketplace add owner/repo, then /plugin install plugin-name@marketplace-name.

Proposal

1. Create a ubcode Claude Code plugin (either in this repo or sourced from useblocks/ubcode) that provides:

   • A setup skill for configuring the ubcode MCP server connection in Claude Code's MCP settings (so Tier 2 data access works out of the box)
   • Optional skills leveraging ubcode MCP tools directly (e.g., needs querying, graph exploration, diagnostics)
   • Documentation on the ubcode + pharaoh integration experience tiers

2. Register it in marketplace.json so users can install both plugins from a single marketplace:

   {
     "plugins": [
       {
         "name": "pharaoh",
         "description": "AI assistant framework for sphinx-needs projects",
         "version": "0.1.0",
         "source": "./"
       },
       {
         "name": "ubcode",
         "description": "Claude Code integration for ubcode VSCode extension MCP server",
         "version": "0.1.0",
         "source": "./plugins/ubcode"
       }
     ]
   }

3. User workflow would then be:

   /plugin marketplace add patdhlk/pharaoh
   /plugin install pharaoh@pharaoh-dev
   /plugin install ubcode@pharaoh-dev
   

Acceptance Criteria

• ubcode plugin with at least a setup skill for MCP server configuration
• marketplace.json lists both pharaoh and ubcode plugins
• README documents the installation steps and experience tiers (Basic → Good → Best)
• Pharaoh's data-access Tier 2 works seamlessly when ubcode plugin is installed and the VS Code extension is running

Related

• Pharaoh three-tier data access: skills/shared/data-access.md
• ubcode MCP server: embedded in the ubcode VS Code extension
• Claude Code plugin docs: https://code.claude.com/docs/en/discover-plugins#add-from-github