Bug: CLAUDE.md references nonexistent mcp-categories.json file

Problem

CLAUDE.md line 42 references a file that does not exist in the repository:

- `mcp-categories.json`: Canonical MCP category definitions shared across plugins

This is a dead link in documentation — users following setup instructions or reading the project structure will look for this file and not find it.

Current State

File: CLAUDE.md line 42

Reference: mcp-categories.json: Canonical MCP category definitions shared across plugins

Actual status: File does not exist anywhere in the repo

$ find . -name 'mcp-categories.json' 2>/dev/null
# (no output)

Resolution Options

1. Create the file — If intended as a real deliverable for MCP organization and plugin configuration
2. Remove the reference — If this was a planned but abandoned feature

If creating the file, see issue #298 for proposed schema (standardized MCP metadata with categories, auth, required/optional flags, and skill bindings).

Impact

• Documentation is misleading
• Users waste time looking for a nonexistent file
• Undermines project credibility (broken promises in readme)