feat: add MCP tool name metadata

[brendanjryan]

Summary

• Add command-level MCP name and description overrides
• Use overrides when collecting MCP tools
• Reject duplicate MCP tool names with a clear error

Motivation

Agent-facing tool names often need to be stable and task-oriented rather than tied to CLI command paths.

Key design considerations

• Preserve existing CLI command names, aliases, and help text
• Keep existing MCP annotations and instructions behavior
• Fail clearly when two commands map to the same MCP tool name

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/incur@171

commit: bda4e0c

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (main@33491cc). Learn more about missing BASE report.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #171   +/-   ##
=======================================
  Coverage        ?   93.76%           
=======================================
  Files           ?       27           
  Lines           ?     3527           
  Branches        ?     1408           
=======================================
  Hits            ?     3307           
  Misses          ?      182           
  Partials        ?       38           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.