项目概览、参与者管理初步优化（未接入真实数据）

backend/app/api/v1/visits.py

@@ -6,6 +6,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from app.core.deps import get_current_user, get_db_session, require_study_member, require_study_roles
 from app.crud import audit as audit_crud
 from app.crud import subject as subject_crud
+from app.crud import study as study_crud
 from app.crud import visit as visit_crud
 from app.schemas.visit import VisitCreate, VisitRead, VisitUpdate
 
@@ -15,7 +16,7 @@ router = APIRouter()
 async def _ensure_subject(db: AsyncSession, study_id: uuid.UUID, subject_id: uuid.UUID):
     subject = await subject_crud.get_subject(db, subject_id)
     if not subject or subject.study_id != study_id:
-        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="受试者不存在")
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="参与者不存在")
     return subject
 
 
@@ -49,16 +50,28 @@ async def create_visit(
 ) -> VisitRead:
     subject = await _ensure_subject(db, study_id, subject_id)
     if visit_in.subject_id != subject_id:
-        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="受试者不匹配")
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="参与者不匹配")
     visit = await visit_crud.create_visit(
         db,
         study_id=study_id,
         visit_in=visit_in,
         subject=subject,
         visit_code=visit_in.visit_code,
-        visit_name=visit_in.visit_name,
         planned_date=visit_in.planned_date,
     )
+    if visit_in.visit_code == "V1" and visit_in.planned_date:
+        study = await study_crud.get(db, study_id)
+        if study:
+            await visit_crud.create_followup_visits(
+                db,
+                study_id=study_id,
+                subject=subject,
+                base_date=visit_in.planned_date,
+                visit_total=study.visit_total,
+                visit_interval_days=study.visit_interval_days,
+                window_start_offset=study.visit_window_start_offset,
+                window_end_offset=study.visit_window_end_offset,
+            )
     await audit_crud.log_action(
         db,
         study_id=study_id,