feat: add sample data population for new users and improve exercise list layout

src/ASTRAIN.Api/Services/UserProvisioning.cs

@@ -29,6 +29,7 @@ internal static class UserProvisioning
             var created = new User { Id = userId };
             db.Users.Add(created);
             await db.SaveChangesAsync();
+            await PopulateSampleDataAsync(db, created);
             return created;
         }
 
@@ -44,10 +45,63 @@ internal static class UserProvisioning
             var user = new User { Id = newId };
             db.Users.Add(user);
             await db.SaveChangesAsync();
+            await PopulateSampleDataAsync(db, user);
             return user;
         }
     }
 
+    /// <summary>
+    /// Populates a new user with sample exercises and routines for debugging.
+    /// </summary>
+    /// <param name="db">The application database context.</param>
+    /// <param name="user">The newly created user.</param>
+    private static async Task PopulateSampleDataAsync(AppDbContext db, User user)
+    {
+        // Sample exercises
+        var exercises = new[]
+        {
+            new Exercise { Name = "Push-ups", UserId = user.Id },
+            new Exercise { Name = "Squats", UserId = user.Id },
+            new Exercise { Name = "Pull-ups", UserId = user.Id },
+            new Exercise { Name = "Bench Press", UserId = user.Id },
+            new Exercise { Name = "Deadlift", UserId = user.Id }
+        };
+
+        db.Exercises.AddRange(exercises);
+        await db.SaveChangesAsync();
+
+        // Sample routines
+        var routine1 = new Routine { Name = "Upper Body", UserId = user.Id };
+        var routine2 = new Routine { Name = "Lower Body", UserId = user.Id };
+
+        db.Routines.AddRange(routine1, routine2);
+        await db.SaveChangesAsync();
+
+        // Associate exercises with routines
+        var pushUps = exercises.First(e => e.Name == "Push-ups");
+        var pullUps = exercises.First(e => e.Name == "Pull-ups");
+        var benchPress = exercises.First(e => e.Name == "Bench Press");
+        var squats = exercises.First(e => e.Name == "Squats");
+        var deadlift = exercises.First(e => e.Name == "Deadlift");
+
+        var routineExercises1 = new[]
+        {
+            new RoutineExercise { RoutineId = routine1.Id, ExerciseId = pushUps.Id, Order = 0 },
+            new RoutineExercise { RoutineId = routine1.Id, ExerciseId = pullUps.Id, Order = 1 },
+            new RoutineExercise { RoutineId = routine1.Id, ExerciseId = benchPress.Id, Order = 2 }
+        };
+
+        var routineExercises2 = new[]
+        {
+            new RoutineExercise { RoutineId = routine2.Id, ExerciseId = squats.Id, Order = 0 },
+            new RoutineExercise { RoutineId = routine2.Id, ExerciseId = deadlift.Id, Order = 1 }
+        };
+
+        db.RoutineExercises.AddRange(routineExercises1);
+        db.RoutineExercises.AddRange(routineExercises2);
+        await db.SaveChangesAsync();
+    }
+
     /// <summary>
     /// Determines whether a user id matches the expected format.
     /// </summary>