refactor: P0-1/2/4 解耦修复 - 拆分过耦合文件 + dashboard 解耦

src/modules/questions/data-access.ts

@@ -127,3 +127,12 @@ export const getQuestions = cache(async ({
     },
   };
 });
+
+export type QuestionsDashboardStats = {
+  questionCount: number
+}
+
+export const getQuestionsDashboardStats = cache(async (): Promise<QuestionsDashboardStats> => {
+  const [row] = await db.select({ value: count() }).from(questions)
+  return { questionCount: Number(row?.value ?? 0) }
+})