chore(lint): golangci-lint --fix — misspell + staticcheck-Autofixes (Backlog 142→~98)

Erster Schritt des golangci-lint-Rollouts (non-blocking): 44 misspell + 4
staticcheck automatisch behoben (32 Dateien, nur Tippfehler/mechanisch).
build+test grün. Kein Runtime-Change → kein Deploy.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

internal/configgen/configgen.go

@@ -23,7 +23,7 @@ import (
 //
 // Name returns a stable identifier ("haproxy", "nftables", …)
 // used in CLI output and audit logs. Render does the actual write +
-// reload work; ctx may be cancelled (e.g. orchestrator timeout).
+// reload work; ctx may be canceled (e.g. orchestrator timeout).
 type Generator interface {
 	Name() string
 	Render(ctx context.Context) error