Descriptor Updater

VS Code extension that automatically updates ModifiedOnUtc in descriptor.json when a nearby .js file is saved, and reverts it when changes are undone.

How it works

• On save of any *.js file, looks for descriptor.json in the same directory.
• If the .js file has uncommitted changes (git) → updates ModifiedOnUtc to current UTC unix timestamp.
• If the .js file has no changes (reverted) → restores descriptor.json to its git state.

Expected descriptor.json format:

{
  "Descriptor": {
    "UId": "...",
    "Name": "...",
    "ModifiedOnUtc": "\/Date(1762427921000)\/"
  }
}