fix(kafka): support cluster address separators

Co-authored-by: zipg <4047349+zipg@users.noreply.github.com>

apps/desktop/src/lib/connection/kafkaBootstrapServers.ts

@@ -0,0 +1,33 @@
+const KAFKA_BOOTSTRAP_SERVER_SEPARATOR = /[\s,;，；]+/u;
+
+function requireKafkaBootstrapServers(value: string): string {
+  const trimmed = value.trim();
+  if (!trimmed) throw new Error("Kafka bootstrap servers are required");
+  return trimmed;
+}
+
+function normalizeKafkaBootstrapServer(server: string): string {
+  if (server.includes("://")) {
+    throw new Error("Kafka bootstrap servers must be host:port values without a URL scheme");
+  }
+  let parsed: URL;
+  try {
+    parsed = new URL(`kafka://${server}`);
+  } catch {
+    throw new Error("Kafka bootstrap servers are invalid");
+  }
+  if (!parsed.hostname || parsed.username || parsed.password || parsed.search || parsed.hash || (parsed.pathname && parsed.pathname !== "/")) {
+    throw new Error("Kafka bootstrap servers are invalid");
+  }
+  return server;
+}
+
+export function normalizeKafkaBootstrapServers(value: string): string {
+  const servers = requireKafkaBootstrapServers(value)
+    .split(KAFKA_BOOTSTRAP_SERVER_SEPARATOR)
+    .map((server) => server.trim())
+    .filter(Boolean)
+    .map(normalizeKafkaBootstrapServer);
+  if (!servers.length) throw new Error("Kafka bootstrap servers are required");
+  return servers.join(",");
+}