TokaFull Ktor API

If the admin UI shows HTTP 404 for GET /admin/modifiers but /catalog/* works,
or modifier Update fails: deploy a build where POST /admin/modifier accepts JSON with
modifierId (update) or without it (create). Some gateways return 405 on POST /admin/modifier-list.
If this port is still running an older Toka server JAR, stop it and start this build:
  .\gradlew.bat :server:run
  powershell.exe -File scripts/restart-toka-api.ps1 -Force
  (or: pwsh -File scripts/restart-toka-api.ps1 -Force if PowerShell 7 is installed)
  docker compose build api --no-cache && docker compose up -d api