feat: 初始版本，圆角主题与首次管理员引导

app/blueprints/users.py

@@ -0,0 +1,29 @@
+from flask import Blueprint, render_template, request, redirect, url_for
+from flask_login import login_required, current_user
+from ..extensions import db
+from ..models import User, Profile, Notification
+
+bp = Blueprint("users", __name__, url_prefix="/users")
+
+@bp.route("/<int:user_id>")
+def profile(user_id):
+    user = User.query.get_or_404(user_id)
+    return render_template("users/profile.html", user=user)
+
+@bp.route("/me/edit", methods=["GET", "POST"])
+@login_required
+def edit_profile():
+    profile = Profile.query.filter_by(user_id=current_user.id).first()
+    if request.method == "POST":
+        profile.bio = request.form.get("bio")
+        profile.grade = request.form.get("grade")
+        profile.class_name = request.form.get("class_name")
+        db.session.commit()
+        return redirect(url_for("users.profile", user_id=current_user.id))
+    return render_template("users/edit.html", profile=profile)
+
+@bp.route("/me/notifications")
+@login_required
+def notifications():
+    items = Notification.query.filter_by(user_id=current_user.id).order_by(Notification.created_at.desc()).limit(50).all()
+    return render_template("users/notifications.html", items=items)