Build agent.exe on any Windows machine

1) Open PowerShell as Administrator
2) In this folder, run:
   .\build.ps1

Output:
- dist\agent\agent.exe

Install UI auto-start using Task Scheduler:
1) Set env vars first (see README.txt)
2) Run:
   .\install-exe.ps1 -ExePath "C:\path\to\dist\agent\agent.exe"

Notes:
- The EXE shows a red/green dot in the corner (UI).
- For services without UI, use NSSM instead.
