feat(题目): 工具栏加「运行例子」、结果页签加「自己输入」，去掉每个例子旁的「测试」和顶栏的分栏切换

- 工具栏「运行例子」：一键用全部例子试跑（Judge0，不算提交），结果进「结果 › 运行例子」，
  每个例子 ✓ / ✕，没对上的沿用答案错误那套中文说明；比赛里只摆输出、不给提示句
  （后端在比赛里故意不做例子对比）；SQL 题不给
- 「结果」页签分成提交结果 / 运行例子 / 自己输入三段；「自己输入」顶替顶栏「自测」模式
  那个单独的编辑器
- 试跑出错（编译、运行、超时）给中文说明，Judge0 的英文原文折叠起来
- 例子比对两边都去掉末尾空白：原来只 trim 了运行输出，样例末尾带空格的题永远「不通过」
- 去掉题面里每个例子旁的「测试」、顶栏的「双栏 / 自测 / 题目」切换、EditorForTest 和
  screenMode store

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

apps/web/src/oj/store/submission.ts

@@ -5,6 +5,7 @@ import { useCodeStore } from "oj/store/code"
 import { useProblemStore } from "oj/store/problem"
 import { useSubmissionMonitor } from "oj/problem/composables/useSubmissionMonitor"
 import { useSubmissionHint } from "oj/problem/composables/useSubmissionHint"
+import { useTrialRun } from "oj/problem/composables/useTrialRun"
 import { restartEditTrace, snapshotEditTrace } from "oj/problem/utils/editTrace"
 import { useCollabStore } from "shared/store/collab"
 import { LANGUAGE_FORMAT_VALUE } from "utils/constants"
@@ -22,6 +23,8 @@ import type { SubmitCodePayload } from "utils/types"
  * 判完之后「该发生什么」（失败计数、标成已解决、烟花、点评、回题单）不在这里，
  * 在页面这一层的 SubmissionEffects —— 它们要路由守卫和弹窗，得挂在一直在的组件上。
  */
+export type ResultSegment = "submit" | "samples" | "custom"
+
 export const useSubmissionStore = defineStore("submission", () => {
   const problemStore = useProblemStore()
   const codeStore = useCodeStore()
@@ -29,15 +32,33 @@ export const useSubmissionStore = defineStore("submission", () => {
 
   const monitor = useSubmissionMonitor()
   const hint = useSubmissionHint()
+  const trial = useTrialRun()
 
   /**
    * 有新结果要给学生看了（交上去、或者语法检查没过）就 +1。题目页看着它把左栏切到
    * 「结果」页签 —— store 不管页签，只说「该看结果了」。
    */
   const resultSeq = ref(0)
-  function revealResult() {
+  /** 「结果」页签里看哪一段：提交结果 / 运行例子 / 自己输入 */
+  const resultSegment = ref<ResultSegment>("submit")
+  function revealResult(segment: ResultSegment = "submit") {
+    resultSegment.value = segment
     resultSeq.value++
   }
+
+  /** 用题目里的例子试跑（Judge0），不算提交 */
+  function runSamples() {
+    const problem = problemStore.problem
+    if (!problem?.samples.length) return
+    revealResult("samples")
+    trial.runSamples({ ...codeStore.code }, problem.samples)
+  }
+
+  /** 用「自己输入」框里的数据跑一次 */
+  function runCustom() {
+    revealResult("custom")
+    trial.runCustom({ ...codeStore.code })
+  }
   const isFormatting = ref(false)
   const isSubmittingRequest = ref(false)
 
@@ -130,8 +151,10 @@ export const useSubmissionStore = defineStore("submission", () => {
    */
   function reset() {
     syntaxErrorInfo.value = ""
+    resultSegment.value = "submit"
     monitor.reset()
     hint.clearHint()
+    trial.resetTrial()
   }
 
   // 题目页换题是同一个组件复用（顶栏题号直达、「下一题」都只换路由参数）
@@ -153,7 +176,10 @@ export const useSubmissionStore = defineStore("submission", () => {
     pending: monitor.pending,
     submitting: monitor.submitting,
     resultSeq,
+    resultSegment,
     revealResult,
+    runSamples,
+    runCustom,
     isFormatting,
     isSubmittingRequest,
     syntaxErrorInfo,
@@ -162,5 +188,6 @@ export const useSubmissionStore = defineStore("submission", () => {
     reset,
     // markRaw：不让 store 把它包成 reactive，组件解构出来的还是 ref
     hint: markRaw(hint),
+    trial: markRaw(trial),
   }
 })