ci: add golangci-lint config and fix formatting

- Add .golangci.yml with minimal linters (govet, ineffassign)
- Run gofmt -s and goimports on all files to fix formatting
- Disable fieldalignment and copylocks checks in govet

internal/security/resources_other.go

@@ -1,4 +1,5 @@
 // go:build !linux
+//go:build !linux
 // +build !linux
 
 package security