AJ ONeal b61ca0aa94
refactor(check-ip): collapse remaining server indirection
- drop format type / formatPretty / formatJSON / requestFormat /
  write / writeGeo — inline into one handler
- drop the inner check closure — inline into the handler
- one handler serves both GET / and GET /check
- fatal() replaced with log.Fatalf
- --serve is optional; without it, databases load and main returns
2026-04-20 15:57:48 -06:00
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