feat: 优化学生端 AI 助学体验

src/api/aiTrainingEvaluation.js

@@ -7,11 +7,11 @@ export function getAiTrainingEvaluation(taskKey) {
   });
 }
 
-export function requestAiTrainingHelp(taskKey, question) {
+export function requestAiTrainingHelp(taskKey, question, stepContext = "") {
   return request({
     url: `/api/student/training-tasks/${taskKey}/ai-evaluation/help`,
     method: "post",
-    data: { question },
+    data: { question, stepContext },
     headers: { repeatSubmit: false },
   });
 }

src/assets/styles/student-training.scss

@@ -1,5 +1,5 @@
 .student-training-shell {
-  --student-step-height: 46px;
+  --student-step-height: 42px;
   --student-step-font: 14px;
   --student-action-height: 42px;
   --student-action-font: 16px;
@@ -30,12 +30,12 @@
   display: grid !important;
   grid-template-columns: minmax(660px, 1fr) 300px !important;
   align-items: start !important;
-  gap: 14px !important;
+  gap: 10px !important;
   width: 100% !important;
   max-width: none !important;
   min-height: calc(100vh - 90px) !important;
   margin: 0 !important;
-  padding: 14px 14px 20px !important;
+  padding: 10px 10px 16px !important;
   background: #06111d !important;
 }
 
@@ -46,27 +46,66 @@
  */
 .student-training-shell > main {
   min-width: 0 !important;
-  padding: 20px !important;
-  border-radius: 24px !important;
+  padding: 12px !important;
+  border-radius: 20px !important;
 }
 
 .student-training-shell > main > .task-card,
 .student-training-shell > main > .process-workbench,
 .student-training-shell > main > .factors-workbench,
 .student-training-shell > main > .workbench {
-  padding: 14px 16px !important;
+  padding: 10px 12px !important;
+  border-radius: 16px !important;
+}
+
+/* 产品开发主要流程的信息层级较多，收紧装饰性边距，为甘特图等实操区域留出横向空间。 */
+#app .studentLayout .app-main:has(.student-training-shell) .student-training-shell.product-process {
+  gap: 10px !important;
+  padding: 10px 10px 16px !important;
+}
+
+#app .studentLayout .app-main:has(.student-training-shell) .student-training-shell.product-process > main {
+  padding: 12px !important;
   border-radius: 20px !important;
 }
 
+#app .studentLayout .app-main:has(.student-training-shell) .student-training-shell.product-process .process-workbench {
+  padding: 10px 12px !important;
+  border-radius: 16px !important;
+}
+
+#app .studentLayout .app-main:has(.student-training-shell) .student-training-shell.product-process .process-step-card {
+  padding: 12px !important;
+  border-radius: 16px !important;
+}
+
+#app .studentLayout .app-main:has(.student-training-shell) .student-training-shell.product-process .task-header {
+  margin-bottom: 12px !important;
+}
+
+#app .studentLayout .app-main:has(.student-training-shell) .student-training-shell.product-process .workbench-head {
+  margin-bottom: 12px !important;
+  padding-bottom: 10px !important;
+}
+
+#app .studentLayout .app-main:has(.student-training-shell) .student-training-shell.product-process .workbench-head--actions-only {
+  margin-bottom: 6px !important;
+  padding-bottom: 0 !important;
+}
+
+#app .studentLayout .app-main:has(.student-training-shell) .student-training-shell.product-process .step-indicator {
+  margin-bottom: 12px !important;
+}
+
 .student-training-shell .step-card,
 .student-training-shell .process-step-card,
 .student-training-shell .factor-step-card {
-  padding: 16px !important;
-  border-radius: 20px !important;
+  padding: 12px !important;
+  border-radius: 16px !important;
 }
 
 .student-training-shell .task-header {
-  margin-bottom: 16px !important;
+  margin-bottom: 12px !important;
 }
 
 .student-training-shell .task-header .task-title {
@@ -106,7 +145,7 @@
   justify-content: space-between !important;
   gap: 6px !important;
   width: 100% !important;
-  margin: 0 0 18px !important;
+  margin: 0 0 12px !important;
   padding: 6px !important;
   border: 1px solid var(--student-panel-border) !important;
   border-radius: var(--student-radius-pill) !important;
@@ -156,7 +195,7 @@
   justify-content: space-between !important;
   gap: 6px !important;
   width: 100% !important;
-  margin: 0 0 24px !important;
+  margin: 0 0 12px !important;
   padding: 6px !important;
   border: 1px solid var(--student-panel-border) !important;
   border-radius: 60px !important;

src/views/components/TrainingAiSidebar.vue

@@ -9,7 +9,13 @@
       <p class="ai-instruction">点击参考提示词可自动带入问题，AI 将结合当前实训内容给出建议。</p>
       <div class="ai-output">
         <div class="output-glow"></div>
-        <p>{{ displayAssistMessage }}</p>
+        <div class="study-messages" aria-live="polite">
+          <p v-if="!assistMessages.length" class="study-message study-message--assistant">{{ displayAssistMessage }}</p>
+          <div v-for="message in assistMessages" :key="message.id" class="study-message" :class="`study-message--${message.role}`">
+            <strong>{{ message.role === "student" ? "我" : "AI助学" }}</strong>
+            <span>{{ message.content }}</span>
+          </div>
+        </div>
         <button v-if="referenceText" type="button" class="reference-block" @click="useReferencePrompt">
           <strong>{{ referenceTitle }}</strong>
           <span v-html="referenceText"></span>
@@ -98,9 +104,11 @@ const internalScore = ref("--");
 const internalScoreVisible = ref(false);
 const assessmentLoading = ref(false);
 const evaluation = ref({});
+const assistMessages = ref([]);
 const route = useRoute();
 const currentTaskKey = computed(() => resolveTrainingTaskKey(route, props.taskKey));
 const reports = computed(() => normalizeEvaluationReports(evaluation.value));
+const currentStepContext = computed(() => [props.studyTip, props.referenceTitle, plainText(props.referenceText)].filter(Boolean).join("\n"));
 
 const displayAssistMessage = computed(() => assistMessage.value || props.studyTip);
 const displayScoreVisible = computed(() => props.scoreVisible || internalScoreVisible.value || reports.value.score !== null);
@@ -111,7 +119,10 @@ const displayEvalMessage = computed(() => {
 });
 
 onMounted(loadEvaluation);
-watch(currentTaskKey, loadEvaluation);
+watch(currentTaskKey, (nextTaskKey, previousTaskKey) => {
+  if (nextTaskKey !== previousTaskKey) assistMessages.value = [];
+  loadEvaluation();
+});
 
 async function loadEvaluation() {
   if (!currentTaskKey.value) return;
@@ -129,15 +140,22 @@ async function requestAssist() {
     assistMessage.value = "请输入问题，或点击上方参考提示词后发送。";
     return;
   }
+  assistMessages.value.push({ id: `student-${Date.now()}`, role: "student", content: question });
+  assistQuestion.value = "";
   if (currentTaskKey.value) {
     try {
-      await requestAiTrainingHelp(currentTaskKey.value, question);
+      await requestAiTrainingHelp(currentTaskKey.value, question, currentStepContext.value);
       await loadEvaluation();
       assistMessage.value = reports.value.helpReport || props.assistText;
+      assistMessages.value.push({ id: `assistant-${Date.now()}`, role: "assistant", content: assistMessage.value });
+      return;
+    } catch (error) {
+      assistMessages.value.push({ id: `assistant-${Date.now()}`, role: "assistant", content: "AI 助学暂时不可用，请稍后重试。" });
       return;
-    } catch (error) {}
+    }
   }
   assistMessage.value = `围绕“${question}”，建议先对照任务目标检查信息是否完整，再补充数据依据和分析结论。`;
+  assistMessages.value.push({ id: `assistant-${Date.now()}`, role: "assistant", content: assistMessage.value });
 }
 
 async function requestEvaluation() {
@@ -157,6 +175,14 @@ async function requestEvaluation() {
     internalEvalMessage.value = "AI 助评暂时不可用，请稍后重试。";
   } finally { assessmentLoading.value = false; }
 }
+
+function plainText(value) {
+  return String(value || "")
+    .replace(/<[^>]*>/g, " ")
+    .replace(/&nbsp;/g, " ")
+    .replace(/\s+/g, " ")
+    .trim();
+}
 </script>
 
 <style lang="scss" scoped>
@@ -236,6 +262,31 @@ async function requestEvaluation() {
     margin: 0;
   }
 }
+.study-messages {
+  position: relative;
+  z-index: 1;
+  display: flex;
+  max-height: 310px;
+  flex-direction: column;
+  gap: 10px;
+  overflow-y: auto;
+}
+.study-message {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  margin: 0;
+  padding: 9px 10px;
+  border: 1px solid rgba(129, 211, 255, 0.2);
+  border-radius: 10px;
+  white-space: pre-wrap;
+
+  strong { font-size: 12px; color: #75e9ff; }
+  span { color: #d9efff; }
+
+  &--student { align-self: flex-end; background: rgba(16, 105, 151, 0.26); }
+  &--assistant { background: rgba(6, 23, 36, 0.6); }
+}
 .ai-instruction { margin: -4px 0 12px; color: #9fcbe2; font-size: 13px; line-height: 1.6; }
 .reference-block { width: 100%; border: 0; background: transparent; padding: 14px 0 0; text-align: left; cursor: pointer; }
 .reference-block:hover strong { color: #77eaff; }

tests/ai-training-evaluation.static.test.cjs

@@ -13,11 +13,11 @@ assert(/`\/api\/student\/training-tasks\/\$\{taskKey\}\/ai-evaluation`/.test(api
 assert(/\/help/.test(api) && /\/assessment/.test(api), "evaluation API should expose help and assessment operations");
 assert(/TrainingAiSidebar/.test(page) && /:has-saved-answer="hasSavedAnswer"/.test(page), "generic training page should pass persisted answer state to the AI sidebar");
 assert(/form\.value/.test(page) && /workRows\.value/.test(page) && /processRows\.value/.test(page), "hasAnyAnswer should inspect all supported answer shapes");
-assert(/requestAiTrainingHelp\(taskKey, question\)/.test(api), "AI help API should accept the student's question");
-assert(/data:\s*\{\s*question\s*\}/.test(api), "AI help API should submit the student's question as JSON");
+assert(/requestAiTrainingHelp\(taskKey, question, stepContext = ""\)/.test(api), "AI help API should accept the student's question and current step context");
+assert(/data:\s*\{\s*question\s*,\s*stepContext\s*\}/.test(api), "AI help API should submit the student's question and current step context as JSON");
 assert(/const question = assistQuestion\.value\.trim\(\)/.test(sidebar), "AI sidebar should trim the student's question before sending it");
 assert(/if \(!question\)/.test(sidebar), "AI sidebar should block an empty AI help question");
-assert(/requestAiTrainingHelp\(currentTaskKey\.value, question\)/.test(sidebar), "AI sidebar should send the trimmed question to AI help");
+assert(/requestAiTrainingHelp\(currentTaskKey\.value, question, currentStepContext\.value\)/.test(sidebar), "AI sidebar should send the trimmed question and current step context to AI help");
 
 assert(/onMounted\(/.test(component) && /watch\(\s*\(\)\s*=>\s*props\.taskKey/.test(component), "AI evaluation should load on mount and task changes");
 assert(/AI助学/.test(component) && /AI助评/.test(component), "AI evaluation should offer separate help and assessment controls");

tests/product-development-process-density.static.test.cjs

@@ -0,0 +1,24 @@
+const assert = require("assert");
+const fs = require("fs");
+const path = require("path");
+
+const root = path.resolve(__dirname, "..");
+const styles = fs.readFileSync(path.join(root, "src/assets/styles/student-training.scss"), "utf8");
+
+assert.match(
+  styles,
+  /\.student-training-shell\.product-process\s*\{[\s\S]*?gap:\s*10px\s*!important;[\s\S]*?padding:\s*10px\s+10px\s+16px\s*!important;/,
+  "产品开发主要流程页应压缩外层边距与双栏间隔"
+);
+assert.match(
+  styles,
+  /\.student-training-shell\.product-process\s*>\s*main\s*\{[\s\S]*?padding:\s*12px\s*!important;/,
+  "产品开发主要流程主卡应减少装饰性内边距"
+);
+assert.match(
+  styles,
+  /\.student-training-shell\.product-process\s+\.process-workbench\s*\{[\s\S]*?padding:\s*10px\s+12px\s*!important;/,
+  "产品开发主要流程工作台应为实操内容释放空间"
+);
+
+console.log("Product development process uses the compact training layout.");

tests/student-training-density.static.test.cjs

@@ -0,0 +1,29 @@
+const assert = require("assert");
+const fs = require("fs");
+const path = require("path");
+
+const root = path.resolve(__dirname, "..");
+const styles = fs.readFileSync(path.join(root, "src/assets/styles/student-training.scss"), "utf8");
+
+assert.match(
+  styles,
+  /\.student-training-shell\s*\{[\s\S]*?--student-step-height:\s*42px;/,
+  "所有学生端实训页应使用更紧凑的步骤条高度"
+);
+assert.match(
+  styles,
+  /\.student-training-shell\s*>\s*main\s*\{[\s\S]*?padding:\s*12px\s*!important;/,
+  "所有学生端实训主卡应减少装饰性内边距"
+);
+assert.match(
+  styles,
+  /\.student-training-shell\s*>\s*main\s*>\s*\.task-card,[\s\S]*?padding:\s*10px\s+12px\s*!important;/,
+  "所有学生端工作台应为实操内容保留更多空间"
+);
+assert.match(
+  styles,
+  /\.student-training-shell\s+\.step-card,[\s\S]*?padding:\s*12px\s*!important;/,
+  "所有学生端步骤卡应使用紧凑内边距"
+);
+
+console.log("All student training pages use the compact layout density.");