Format Go with gofmt, then golines -m 77 (closes #215)

script/fmt now runs golines -m 77 after gofmt, repeating golines until
it changes nothing, since one pass can leave a line the next splits.
script/fmt-check fails when either would change a file.
script/bootstrap installs golines v0.13.0 with go install, pinned to
its commit, and checks the installed version with go version -m.

The tree is reformatted. The longer lines this makes are fixed by
hand: nolint directives moved onto their own line above the statement,
one string split, and 20 functions over funlen's 80 lines shortened or
split, RunWAF and limitPercentages among them.

Model: opus-5-5

internal/lookup/snapshot_test.go

@@ -59,7 +59,10 @@ func TestLoadedAnswersAreKeptFor7DaysFromWhenGeoJSGaveThem(t *testing.T) {
 	g.Load([]lookup.Answer{kept, stale})
 
 	if got := g.Snapshot(); !slices.Equal(got, []lookup.Answer{kept}) {
-		t.Errorf("kept %+v, want only the answer GeoJS gave less than 7 days ago", got)
+		t.Errorf(
+			"kept %+v, want only the answer GeoJS gave less than 7 days ago",
+			got,
+		)
 	}
 
 	wantCountry(t, g, kept.Client, "FR")