start with activity + fix tests

src/tera/admin/user.rs

@@ -327,6 +327,34 @@ async fn update_mail(
     }
 }
 
+#[derive(FromForm, Debug)]
+pub struct AddNoteForm {
+    note: String,
+}
+
+#[post("/user/<id>/add-note", data = "<data>")]
+async fn add_note(
+    db: &State<SqlitePool>,
+    data: Form<AddNoteForm>,
+    admin: ManageUserUser,
+    id: i32,
+) -> Flash<Redirect> {
+    let Some(user) = User::find_by_id(db, id).await else {
+        return Flash::error(
+            Redirect::to("/admin/user"),
+            format!("User with ID {} does not exist!", id),
+        );
+    };
+
+    match user.add_note(db, &admin, &data.note).await {
+        Ok(_) => Flash::success(
+            Redirect::to(format!("/admin/user/{}", user.id)),
+            "Notiz hinzugefügt",
+        ),
+        Err(e) => Flash::error(Redirect::to(format!("/admin/user/{}", user.id)), e),
+    }
+}
+
 #[derive(FromForm, Debug)]
 pub struct PhoneUpdateForm {
     phone: String,
@@ -1147,6 +1175,7 @@ pub fn routes() -> Vec<Route> {
         update_family,
         add_membership_pdf,
         add_role,
+        add_note,
         remove_role,
         //
         scheckbook_to_regular,