Implement active user tiers, class-based Tailwind theme switcher, 3-tiled static dashboard layout, Minio object storage integration, school & state settings database sync, and streak wishes onboarding modal

backend/main.py

@@ -456,6 +456,8 @@ class UserUpdate(BaseModel):
     name: Optional[str] = None
     target_exam: Optional[models.ExamEnum] = None
     student_class: Optional[models.ClassEnum] = None
+    school: Optional[str] = None
+    state: Optional[str] = None
 
 @app.put("/api/users/{user_id}", response_model=models.User, tags=["Users"])
 def update_user_profile(user_id: UUID, payload: UserUpdate, session: Session = Depends(get_session)):
@@ -468,14 +470,36 @@ def update_user_profile(user_id: UUID, payload: UserUpdate, session: Session = D
     if payload.target_exam is not None:
         user.target_exam = payload.target_exam
     if payload.student_class is not None:
-        # Note: mapping alias 'class' in User class to 'student_class'
         user.student_class = payload.student_class
+    if payload.school is not None:
+        user.school = payload.school
+    if payload.state is not None:
+        user.state = payload.state
         
     session.add(user)
     session.commit()
     session.refresh(user)
     return user
 
+from fastapi import UploadFile, File
+from storage import upload_file
+
+@app.post("/api/users/{user_id}/upload-avatar", tags=["Users"])
+async def upload_user_avatar(user_id: UUID, file: UploadFile = File(...), session: Session = Depends(get_session)):
+    user = session.get(models.User, user_id)
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+        
+    contents = await file.read()
+    file_extension = file.filename.split(".")[-1] if "." in file.filename else "jpg"
+    object_name = f"avatar_{user_id}.{file_extension}"
+    public_url = upload_file(contents, object_name, content_type=file.content_type)
+    
+    if not public_url:
+        raise HTTPException(status_code=500, detail="Failed to upload image to Minio.")
+        
+    return {"url": public_url}
+
 @app.get("/api/tests", response_model=List[models.Test], tags=["CBT Engine"])
 def list_tests(exam_pattern: Optional[models.ExamEnum] = None, session: Session = Depends(get_session)):
     query = select(models.Test)