Adds scripts/publish.ps1, which produces a self-contained single-file exe plus
the headless AE build script, optionally zipped for copying to a render machine.
Adds `VFXReviewWorker.exe --check`: resolves every configured path, confirms
aerender/AfterFX/the build script exist, verifies each pathMappings target is
reachable from that machine, and pings the server to confirm the API key is
accepted — exiting non-zero if anything would stop the worker running. Catches
a wrong path at install time rather than in the logs later.
Verified from the published binary: the single-file exe resolves its scripts
folder correctly, so the preview build script ships alongside the exe rather
than embedded and can be patched without a rebuild.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>