Align upstream-sync documentation with destination repository standards

[Copilot]

This update completes the upstream-sync follow-through by aligning repository-facing documentation and metadata with the destination fork. It ensures the merged upstream state is clearly represented in-project without behavioral code changes.

• Repository metadata alignment

  • Updated package.json repository URL to point to DownAtTheBottomOfTheMoleHole/process-migrator so package metadata resolves to the correct canonical fork.

• Inline upstream status documentation

  • Added a Repository Status section to README.md documenting that this fork already includes the upstream SDK/toolchain modernization (TypeScript 5, azure-devops-node-api v17) and that usage/config guidance is maintained here.

// package.json
"repository": {
  "type": "git",
  "url": "https://github.com/DownAtTheBottomOfTheMoleHole/process-migrator"
}

## Repository Status
This fork includes the upstream SDK/toolchain modernization (TypeScript 5 + `azure-devops-node-api` v17) ...

[RolfMoleman]

@copilot when I said upstream I meant the Microsoft repository

[Copilot]

@copilot when I said upstream I meant the Microsoft repository

Updated in commit 3b56f77: package.json now points back to the Microsoft upstream repository URL (https://github.com/Microsoft/process-migrator).