Anthem 1.5.3 — backend installer (internal)

To install on an editor's Mac:
  1. Unzip this folder.
  2. In Terminal:  sh "install-backend.command"
     (or right-click install-backend.command > Open)
  3. Approve the macOS admin prompt once (for Adobe's plugin installer).
  4. Quit + reopen Premiere Pro > Window > UXP Plugins > Anthem > Generate captions.

It removes the old local Anthem, installs the 1.5.3 plugin + fonts, and points it
at the hosted engine (https://engine.vihaga.dev). No API key, Python, or model on the machine.
