gofmt the kiwix client and rewrite test

PR #41 and #44 landed these two files unformatted, so the gofmt gate that
PR #12 added to `make test` failed as soon as both were on one branch.
Struct-tag and comment alignment only, no semantic change.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CGeSZxh1DCtRxmFVSYVGvJ

internal/kiwix/client.go

@@ -82,7 +82,7 @@ type rss struct {
 		Description struct {
 			Inner string `xml:",innerxml"`
 		} `xml:"description"`
-		WordCount   string `xml:"wordCount"`
+		WordCount string `xml:"wordCount"`
 	} `xml:"channel>item"`
 }
 

internal/kiwix/rewrite_test.go

@@ -81,7 +81,7 @@ func TestRewriteConstrainsTheCall(t *testing.T) {
 func TestRewriteRejectsBadModelOutput(t *testing.T) {
 	bad := []string{
 		`{"query":"почему небо синее"}`, // never translated
-		`{"query":""}`,                  // empty
+		`{"query":""}`, // empty
 		`{"query":"the sky is blue because sunlight is scattered by air"}`, // an answer
 		// Note: a SHORT English prose fragment ("Let me analyze this request")
 		// is under the word cap and cannot be caught here. The grammar is what