fix(mobile): drive learning search from assignments

mobile-uni/src/pages/user/learning/index.vue

@@ -1,8 +1,18 @@
 <template>
   <view class="page learning-page">
-    <view class="learning-head">
-      <text class="page-title">学</text>
-      <text class="page-subtitle">按你的岗位读取今日任务、SOP 依据和训练前预习卡。</text>
+    <view class="subpage-header">
+      <button
+        class="subpage-back-button"
+        aria-label="返回今日"
+        title="返回今日"
+        @click="navigateBackToToday"
+      >
+        ←
+      </button>
+      <view class="subpage-heading">
+        <text class="page-title">学</text>
+        <text class="page-subtitle">按你的岗位读取今日任务、SOP 依据和训练前预习卡。</text>
+      </view>
     </view>
 
     <view v-if="message" class="status-message">{{ message }}</view>
@@ -18,11 +28,11 @@
     <view v-if="loggedIn" class="learning-summary">
       <view class="summary-item">
         <text class="summary-value">{{ pendingCount }}</text>
-        <text class="summary-label">待学习</text>
+        <text class="summary-label">待完成</text>
       </view>
       <view class="summary-item">
         <text class="summary-value">{{ completedCount }}</text>
-        <text class="summary-label">已完成</text>
+        <text class="summary-label">今日完成</text>
       </view>
       <view class="summary-item">
         <text class="summary-value">{{ referenceCount }}</text>
@@ -32,7 +42,7 @@
 
     <view v-if="loggedIn" class="panel">
       <view class="panel-head">
-        <text class="panel-title">今日学习</text>
+        <text class="panel-title">今日任务</text>
         <button class="ghost-button compact-button" :disabled="assignmentLoading" @click="loadAssignments">
           {{ assignmentLoading ? '刷新中' : '刷新' }}
         </button>
@@ -55,7 +65,7 @@
           </button>
         </view>
       </view>
-      <view v-else class="empty">暂无今日学习任务</view>
+      <view v-else class="empty">暂无今日任务</view>
     </view>
 
     <view v-if="loggedIn" class="panel">
@@ -140,7 +150,8 @@ import type {
 import { getPracticeAssignments, getPracticePrepCard } from '@/services/practice';
 import { searchKnowledge } from '@/services/knowledge';
 import { getSelectedPositionProfile, isLoggedIn, rememberLoginRedirect } from '@/services/auth';
-import { resetPageScroll } from '@/services/navigation';
+import { buildLearningTopics, selectLearningTopic } from '@/services/learning';
+import { navigateBackToToday, resetPageScroll } from '@/services/navigation';
 import { ensureEmployeePosition } from '@/services/position';
 
 const defaultScenarioId = 'complaint-water';
@@ -158,13 +169,12 @@ const prepLoading = ref(false);
 const knowledgeLoading = ref(false);
 const positionProfile = ref(getSelectedPositionProfile());
 
-const topics = computed(() => {
-  const profile = positionProfile.value;
-  return [
-    `${profile.value} 岗前 SOP`,
-    ...profile.quickQuestions
-  ];
-});
+const defaultTopic = computed(() => `${positionProfile.value.value} 岗前 SOP`);
+const topics = computed(() => buildLearningTopics(
+  assignments.value,
+  defaultTopic.value,
+  positionProfile.value.quickQuestions
+));
 
 const pendingCount = computed(() => assignments.value.filter((item) => item.status !== '已完成').length);
 const completedCount = computed(() => assignments.value.filter((item) => item.status === '已完成').length);
@@ -218,6 +228,7 @@ const loadAssignments = async () => {
   try {
     assignments.value = await getPracticeAssignments(true);
   } catch (error) {
+    assignments.value = [];
     handleRequestError(error, '学习任务加载失败');
   } finally {
     assignmentLoading.value = false;
@@ -264,12 +275,12 @@ const loadPage = async () => {
     return;
   }
   refreshAuthState();
-  activeTopic.value = topics.value[0] || activeTopic.value;
+  await loadAssignments();
+  activeTopic.value = selectLearningTopic(assignments.value, defaultTopic.value);
   await Promise.all([
-    loadAssignments(),
-    loadKnowledge(activeTopic.value)
+    loadKnowledge(activeTopic.value),
+    loadPrepCard()
   ]);
-  await loadPrepCard();
 };
 
 const goLogin = () => {
@@ -309,10 +320,6 @@ onShow(() => {
   padding-bottom: 42px;
 }
 
-.learning-head {
-  padding-top: 4px;
-}
-
 .login-panel {
   display: flex;
   gap: 14px;