refactor: canonicalize TypeScript and Tailwind syntax

src/stores/chat/chat-message-mappers.ts

@@ -7,7 +7,7 @@ import { todayString } from "@/utils/date";
  * Business fact: `role === "assistant"` means the message is from AI.
  */
 export function localMessagesToUi(
-  records: ReadonlyArray<{
+  records: readonly {
     id?: string;
     type?: string;
     content: string;
@@ -16,7 +16,7 @@ export function localMessagesToUi(
     audioUrl?: string | null;
     image?: { type: string | null; url: string | null };
     lockDetail?: ChatLockDetailData;
-  }>,
+  }[],
 ): UiMessage[] {
   return records.map((m) => ({
     ...(m.id ? { id: m.id } : {}),