diff --git a/apps/web/src/oj/problem/components/BasicEditor.vue b/apps/web/src/oj/problem/components/BasicEditor.vue
deleted file mode 100644
index 04dfb2d..0000000
--- a/apps/web/src/oj/problem/components/BasicEditor.vue
+++ /dev/null
@@ -1,71 +0,0 @@
-<script lang="ts" setup>
-import { storeToRefs } from "pinia"
-import { useCodeStore } from "oj/store/code"
-import { useProblemStore } from "oj/store/problem"
-import { SOURCES } from "utils/constants"
-import CodeEditor from "shared/components/CodeEditor.vue"
-import { useBreakpoints } from "shared/composables/breakpoints"
-import storage from "utils/storage"
-import type { LANGUAGE } from "utils/types"
-import { beginEditTrace, editTraceExtensions } from "oj/problem/utils/editTrace"
-import EditorToolbar from "./EditorToolbar.vue"
-
-const route = useRoute()
-
-const codeStore = useCodeStore()
-const problemStore = useProblemStore()
-const { problem } = storeToRefs(problemStore)
-
-const { isDesktop } = useBreakpoints()
-
-const contestID = route.params.contestID || null
-const storageKey = computed(
-  () => `problem_${problem.value!._id}_contest_${contestID}_lang_${codeStore.code.language}`,
-)
-
-const editorHeight = computed(() =>
-  isDesktop.value ? "calc(100vh - 133px)" : "calc(100vh - 172px)",
-)
-
-function loadCode() {
-  codeStore.code.language = problemStore.supportedLanguage(codeStore.code.language)
-  const savedCode = storage.get(storageKey.value)
-  codeStore.setCode(
-    savedCode ||
-      problem.value!.template[codeStore.code.language] ||
-      SOURCES[codeStore.code.language],
-  )
-  beginEditTrace(`problem_${problem.value!._id}_contest_${contestID}`, codeStore.code.value.length)
-}
-
-onMounted(loadCode)
-
-// 换题时组件复用、不重新挂载，和 ProblemEditor 一样得自己重新载入
-watch(() => problem.value?._id, loadCode)
-
-const changeCode = (v: string) => {
-  storage.set(storageKey.value, v)
-}
-
-const changeLanguage = (v: LANGUAGE) => {
-  const savedCode = storage.get(storageKey.value)
-  codeStore.setCode(
-    savedCode && storageKey.value.split("_").pop() === v
-      ? savedCode
-      : problem.value!.template[codeStore.code.language] || SOURCES[codeStore.code.language],
-  )
-}
-</script>
-
-<template>
-  <n-flex vertical>
-    <EditorToolbar :storage-key="storageKey" @change-language="changeLanguage" />
-    <CodeEditor
-      v-model:value="codeStore.code.value"
-      :language="codeStore.code.language"
-      :height="editorHeight"
-      :extra-extensions="editTraceExtensions"
-      @update:model-value="changeCode"
-    />
-  </n-flex>
-</template>
diff --git a/apps/web/src/oj/problem/detail.vue b/apps/web/src/oj/problem/detail.vue
index 72b1e6e..b50649b 100644
--- a/apps/web/src/oj/problem/detail.vue
+++ b/apps/web/src/oj/problem/detail.vue
@@ -8,11 +8,12 @@ import { useScreenModeStore } from "shared/store/screenMode"
 import { useMyFlowchartStore } from "shared/store/myFlowchart"
 import { useUserStore } from "shared/store/user"
 
-// 抽成具名 loader，便于进页面时与接口并行预取编辑器 chunk
+// 抽成具名 loader，便于进页面时与接口并行预取编辑器 chunk。
+// 题库、比赛、题单三种入口用的是同一个编辑器：原来比赛和题单用的是另一个精简版，
+// 没有协作、也没有错误标记，于是题单里「求助」老师接不上、「把中文标点都换成英文」
+// 点了没反应（见 docs/specs/2026-09-28-problem-page-redesign-design.md 第 10 节）
 const loadProblemEditor = () => import("./components/ProblemEditor.vue")
-const loadContestEditor = () => import("./components/BasicEditor.vue")
 const ProblemEditor = defineAsyncComponent(loadProblemEditor)
-const BasicEditor = defineAsyncComponent(loadContestEditor)
 const EditorForTest = defineAsyncComponent(() => import("./components/EditorForTest.vue"))
 const ProblemContent = defineAsyncComponent(() => import("./components/ProblemContent.vue"))
 const ProblemInfo = defineAsyncComponent(() => import("./components/ProblemInfo.vue"))
@@ -71,8 +72,6 @@ const tabOptions = computed(() => {
 
 const currentTab = ref("content")
 
-const isPublicProblemRoute = computed(() => route.name === "problem")
-
 watch(
   [() => route.query.tab, () => tabOptions.value],
   ([rawTab]) => {
@@ -103,7 +102,7 @@ async function init() {
   myFlowchartStore.hide()
   // 并行预取右侧编辑器 chunk（CodeMirror ~370K+），
   // 避免等 getProblem 返回后才串行下载，编辑器才迟迟出现
-  ;(isPublicProblemRoute.value ? loadProblemEditor : loadContestEditor)()
+  loadProblemEditor()
   try {
     const res = await getProblem(problemID, contestID)
     problem.value = res
@@ -188,7 +187,7 @@ watch(
         </n-scrollbar>
       </template>
       <template #2>
-        <component :is="isPublicProblemRoute ? ProblemEditor : BasicEditor" />
+        <ProblemEditor />
       </template>
     </n-split>
 
@@ -232,7 +231,7 @@ watch(
         <ProblemFlowchart />
       </n-tab-pane>
       <n-tab-pane name="editor" tab="代码">
-        <component :is="isPublicProblemRoute ? ProblemEditor : BasicEditor" />
+        <ProblemEditor />
       </n-tab-pane>
       <n-tab-pane name="info" tab="统计" :disabled="!!problemSetId">
         <ProblemInfo />
diff --git a/apps/web/src/oj/problem/utils/editTrace.ts b/apps/web/src/oj/problem/utils/editTrace.ts
index 8276619..1459d17 100644
--- a/apps/web/src/oj/problem/utils/editTrace.ts
+++ b/apps/web/src/oj/problem/utils/editTrace.ts
@@ -5,8 +5,8 @@ import type { SubmissionTrace } from "@oj2/contract"
  * 编辑过程信号的采集，随提交一起报给后端（落进 `submission_trace`）。
  * 字段含义见契约的 `submissionTraceSchema`。**只数字符数和次数，不留任何按键内容。**
  *
- * 是模块单例而不是 Pinia store：编辑器（ProblemEditor / BasicEditor 里）和
- * 提交按钮（Form → SubmitCode）是兄弟组件，得共用一份计数；而 CodeMirror 的
+ * 是模块单例而不是 Pinia store：编辑器（ProblemEditor 里）和
+ * 提交按钮（EditorToolbar → SubmitCode）是兄弟组件，得共用一份计数；而 CodeMirror 的
  * 扩展对象一旦经过 store 就会被包成响应式代理，facet 靠身份比较，代理过的扩展
  * 直接失效。计数本身也不需要响应式。
  *