v1.2.3

What changed

• Added �vernote-to-onenote doctor for a non-destructive local preflight check.
• Doctor reports Node.js version, Microsoft sign-in state, current command folder, and progress-file status.
• Clarified guided/setup progress wording so existing progress.json is tied to the current command folder.
• Updated README help examples for setup and doctor.

Verification

• Local
  pm test: 446 tests, 439 passed, 0 failed, 7 skipped.
• Local
  pm run pack:check: passed.
• GitHub CI: Node 20/22 on Ubuntu and Windows passed.