Add IntelliKit MCP tool inventory response

[Copilot]

PR comment requested a list of available MCP tools. This PR adds a reply documenting all MCP tool categories accessible to the Copilot agent in this environment.

Changes

• Tool inventory reply: Responded to PR comment with a structured list of all available MCP tools, grouped by provider:
  • GitHub MCP Server (repo, issues, PRs, Actions, security)
  • HIP Compiler MCP (compile HIP source files/strings)
  • Playwright Browser MCP (browser automation)
  • IntelliKit Skills (metrix, linex, accordo, nexus, kerncap — GPU profiling/validation)
  • Security & code review (gh-advisory-database, codeql_checker)
  • General tooling (bash, file ops, grep/glob, sub-agents, memory, progress reporting)

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