feat(profile): refine student creation workflow

server/src/routes.rs

@@ -23,8 +23,8 @@ use crate::{
 
 type SharedState = Arc<AppState>;
 
-const DEFAULT_GRADE: &str = "艺术类";
-const DEFAULT_SUBJECT: &str = "美术";
+const DEFAULT_GRADE: &str = "初一";
+const DEFAULT_SUBJECT: &str = "数学";
 const DEFAULT_DURATION_MINUTES: i16 = 60;
 
 pub fn router() -> (Router<SharedState>, OpenApi) {
@@ -469,8 +469,8 @@ async fn delete_profile(
 /// 当前用户的新建档案预设。
 #[derive(Debug, Serialize, FromRow, ToSchema)]
 #[schema(example = json!({
-    "grade": "艺术类",
-    "subject": "美术",
+    "grade": "初一",
+    "subject": "数学",
     "lesson_duration_minutes": 60,
     "updated_at": "2026-07-15T10:00:00Z"
 }))]
@@ -488,8 +488,8 @@ struct ProfileDefaults {
 /// 保存档案预设的请求体。
 #[derive(Debug, Deserialize, ToSchema)]
 #[schema(example = json!({
-    "grade": "艺术类",
-    "subject": "美术",
+    "grade": "初一",
+    "subject": "数学",
     "lesson_duration_minutes": 60
 }))]
 struct ProfileDefaultsInput {
@@ -507,7 +507,7 @@ struct ProfileDefaultsInput {
     path = "/api/v1/profile-defaults",
     tag = "档案预设",
     summary = "读取档案预设",
-    description = "读取当前用户的预设；尚未保存时直接返回艺术类、美术、60 分钟的系统默认值。",
+    description = "读取当前用户的预设；尚未保存时直接返回初一、数学、60 分钟的系统默认值。",
     params(
         ("Authorization" = String, Header, description = "Bearer 会话令牌", example = "Bearer <access-token>")
     ),
@@ -551,8 +551,8 @@ async fn get_defaults(
         description = "要保存的档案预设",
         content_type = "application/json",
         example = json!({
-            "grade": "艺术类",
-            "subject": "美术",
+            "grade": "初一",
+            "subject": "数学",
             "lesson_duration_minutes": 60
         })
     ),