Add logging for fetch operations in Webmentions component

src/lib/webmentions.ts

@@ -48,6 +48,7 @@ async function fetchForTarget(target: string): Promise<WMEntry[]> {
 		console.warn('[webmentions] WEBMENTION_TOKEN is not set — skipping fetch.');
 		return [];
 	}
+	console.log(`[webmentions] fetching ${target} (token length: ${token.length})`);
 	const url = new URL(API);
 	url.searchParams.set('target', target);
 	url.searchParams.set('token', token);
@@ -58,6 +59,7 @@ async function fetchForTarget(target: string): Promise<WMEntry[]> {
 		return [];
 	}
 	const json = (await res.json()) as WMResponse;
+	console.log(`[webmentions]   → ${json.children?.length ?? 0} mentions`);
 	return json.children ?? [];
 }