style: 按 Oxfmt 重新格式化

换格式化器带来的差异，只有 5 个文件：长联合类型改成每项一行、以 | 开头。
和上一个提交分开，方便 blame 时跳过（git blame --ignore-rev）。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/api/src/db/index.ts

@@ -16,7 +16,8 @@ export const db = drizzle(client, { schema })
  * `$client`、`batch` 等）一并抹掉了。
  */
 export type DbOrTx =
-  typeof db | Parameters<Parameters<typeof db.transaction>[0]>[0]
+  | typeof db
+  | Parameters<Parameters<typeof db.transaction>[0]>[0]
 
 /**
  * 读出来的时刻统一成 ISO 8601 UTC，和写侧的 `new Date().toISOString()` 同形状。

apps/api/src/judge/sql/index.ts

@@ -177,7 +177,8 @@ async function runJob<T>(
 
   try {
     const parsed = JSON.parse(stdout) as
-      { ok: true; case?: CaseResult; display?: unknown } | SqlJobFailure
+      | { ok: true; case?: CaseResult; display?: unknown }
+      | SqlJobFailure
     if (!parsed.ok) return parsed
     return { ok: true, value: (parsed.case ?? parsed.display) as T }
   } catch {

apps/web/src/oj/learn/composables/useExerciseParse.ts

@@ -1,7 +1,8 @@
 import type { Exercise } from "utils/types"
 
 export type Segment =
-  { type: "md"; content: string } | { type: "exercise"; exercise: Exercise }
+  | { type: "md"; content: string }
+  | { type: "exercise"; exercise: Exercise }
 
 export function parseExercises(
   content: string,

apps/web/src/oj/problem/components/SubmitFlowchart.vue

@@ -112,7 +112,8 @@ const POLL_INTERVAL = 3000
 const POLL_TIMEOUT = 3 * 60 * 1000
 
 type Outcome =
-  { ok: true; score: number; grade: string } | { ok: false; error?: string }
+  | { ok: true; score: number; grade: string }
+  | { ok: false; error?: string }
 
 const { pause: pausePolling, resume: resumePolling } = useIntervalFn(
   async () => {

apps/web/src/shared/composables/websocket.ts

@@ -36,7 +36,10 @@ function handleForceLogout(reason: string) {
  * WebSocket 连接状态
  */
 export type ConnectionStatus =
-  "disconnected" | "connecting" | "connected" | "error"
+  | "disconnected"
+  | "connecting"
+  | "connected"
+  | "error"
 
 /**
  * WebSocket 消息类型