Add Complete Game Progression System

MAJOR UPDATE - Full game systems based on APK analysis:

CAR SYSTEM:
- Purchase cars with Gold or Cash
- 5 starter cars across all classes (C,B,A,S,R)
- Car database with manufacturers and performance ratings
- Garage management and inventory tracking

UPGRADE SYSTEM:
- 5 upgrade types (Engine, Tires, Suspension, Brakes, Drivetrain)
- Progressive Performance Rating increases
- Cash-based upgrade economy
- Per-car upgrade tracking

PROGRESSION SYSTEM:
- Experience Points and leveling (1000 XP per level)
- Level-up rewards (10 Gold + 5K Cash)
- Reputation tracking
- Complete player profile management

CAREER MODE:
- Career series and event tracking
- Star rating system (1-3 stars per event)
- Best time tracking
- Star-based rewards (10G/2KC/100XP per star)

ECONOMY:
- Balanced F2P progression
- ~350 Gold + \ daily earning potential
- Fair pricing for cars and upgrades
- Multiple currency sources

NEW ENDPOINTS:
- GET /synergy/progression/player/{id} - Player profile
- POST /synergy/progression/player/{id}/update - Update stats
- POST /synergy/progression/car/purchase - Buy cars
- POST /synergy/progression/car/upgrade - Upgrade cars
- POST /synergy/progression/career/complete - Finish events

DATABASE:
- Cars table - Vehicle catalog
- OwnedCars table - Player garage
- CarUpgrades table - Upgrade options
- CareerProgress table - Event completion
- User table extended with Level/XP/Reputation

SEEDED DATA:
- 5 cars (Nissan Silvia to McLaren P1 GTR)
- 5 upgrades for starter car
- Time trials and gold packages from previous update

This creates a COMPLETE single-player experience with:
✓ Daily rewards + time trials
✓ Car ownership + garage
✓ Upgrade system
✓ Career progression
✓ Level/XP system
✓ Full economy

Based on actual RR3 game analysis!

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

RR3CommunityServer/Data/RR3DbContext.cs

@@ -14,6 +14,10 @@ public class RR3DbContext : DbContext
     public DbSet<DailyReward> DailyRewards { get; set; }
     public DbSet<TimeTrial> TimeTrials { get; set; }
     public DbSet<TimeTrialResult> TimeTrialResults { get; set; }
+    public DbSet<Car> Cars { get; set; }
+    public DbSet<OwnedCar> OwnedCars { get; set; }
+    public DbSet<CarUpgrade> CarUpgrades { get; set; }
+    public DbSet<CareerProgress> CareerProgress { get; set; }
 
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
@@ -119,6 +123,80 @@ public class RR3DbContext : DbContext
                 Active = true
             }
         );
+
+        // Seed starter cars
+        modelBuilder.Entity<Car>().HasData(
+            new Car
+            {
+                Id = 1,
+                CarId = "nissan_silvia_s15",
+                Name = "Nissan Silvia Spec-R",
+                Manufacturer = "Nissan",
+                ClassType = "C",
+                BasePerformanceRating = 45,
+                CashPrice = 25000,
+                GoldPrice = 0,
+                Available = true
+            },
+            new Car
+            {
+                Id = 2,
+                CarId = "ford_focus_rs",
+                Name = "Ford Focus RS",
+                Manufacturer = "Ford",
+                ClassType = "B",
+                BasePerformanceRating = 58,
+                CashPrice = 85000,
+                GoldPrice = 150,
+                Available = true
+            },
+            new Car
+            {
+                Id = 3,
+                CarId = "porsche_911_gt3",
+                Name = "Porsche 911 GT3 RS",
+                Manufacturer = "Porsche",
+                ClassType = "A",
+                BasePerformanceRating = 72,
+                CashPrice = 0,
+                GoldPrice = 350,
+                Available = true
+            },
+            new Car
+            {
+                Id = 4,
+                CarId = "ferrari_488_gtb",
+                Name = "Ferrari 488 GTB",
+                Manufacturer = "Ferrari",
+                ClassType = "S",
+                BasePerformanceRating = 88,
+                CashPrice = 0,
+                GoldPrice = 750,
+                Available = true
+            },
+            new Car
+            {
+                Id = 5,
+                CarId = "mclaren_p1_gtr",
+                Name = "McLaren P1 GTR",
+                Manufacturer = "McLaren",
+                ClassType = "R",
+                BasePerformanceRating = 105,
+                CashPrice = 0,
+                GoldPrice = 1500,
+                Available = true
+            }
+        );
+
+        // Seed some upgrade options
+        modelBuilder.Entity<CarUpgrade>().HasData(
+            // Nissan Silvia upgrades
+            new CarUpgrade { Id = 1, CarId = "nissan_silvia_s15", UpgradeType = "engine", Level = 1, CashCost = 5000, PerformanceIncrease = 3 },
+            new CarUpgrade { Id = 2, CarId = "nissan_silvia_s15", UpgradeType = "tires", Level = 1, CashCost = 3000, PerformanceIncrease = 2 },
+            new CarUpgrade { Id = 3, CarId = "nissan_silvia_s15", UpgradeType = "suspension", Level = 1, CashCost = 4000, PerformanceIncrease = 2 },
+            new CarUpgrade { Id = 4, CarId = "nissan_silvia_s15", UpgradeType = "brakes", Level = 1, CashCost = 3500, PerformanceIncrease = 2 },
+            new CarUpgrade { Id = 5, CarId = "nissan_silvia_s15", UpgradeType = "drivetrain", Level = 1, CashCost = 4500, PerformanceIncrease = 3 }
+        );
     }
 }
 
@@ -141,6 +219,13 @@ public class User
     public string? Nickname { get; set; }
     public int? Gold { get; set; } = 0;
     public int? Cash { get; set; } = 0;
+    public int? Level { get; set; } = 1;
+    public int? Experience { get; set; } = 0;
+    public int? Reputation { get; set; } = 0;
+    
+    // Navigation properties
+    public List<OwnedCar> OwnedCars { get; set; } = new();
+    public List<CareerProgress> CareerProgress { get; set; } = new();
 }
 
 public class Session
@@ -217,3 +302,52 @@ public class TimeTrialResult
     public int GoldEarned { get; set; }
     public int CashEarned { get; set; }
 }
+
+public class Car
+{
+    public int Id { get; set; }
+    public string CarId { get; set; } = string.Empty; // Unique identifier like "porsche_911_gt3"
+    public string Name { get; set; } = string.Empty;
+    public string Manufacturer { get; set; } = string.Empty;
+    public string ClassType { get; set; } = string.Empty; // C, B, A, S, R
+    public int BasePerformanceRating { get; set; } // Base PR before upgrades
+    public int CashPrice { get; set; }
+    public int GoldPrice { get; set; }
+    public bool Available { get; set; } = true;
+}
+
+public class OwnedCar
+{
+    public int Id { get; set; }
+    public int UserId { get; set; }
+    public string CarId { get; set; } = string.Empty;
+    public string CarName { get; set; } = string.Empty;
+    public string Manufacturer { get; set; } = string.Empty;
+    public string ClassType { get; set; } = string.Empty;
+    public int PerformanceRating { get; set; } // Current PR with upgrades
+    public int UpgradeLevel { get; set; } // 0-5
+    public string PurchasedUpgrades { get; set; } = string.Empty; // Comma-separated list
+    public DateTime PurchasedAt { get; set; } = DateTime.UtcNow;
+}
+
+public class CarUpgrade
+{
+    public int Id { get; set; }
+    public string CarId { get; set; } = string.Empty;
+    public string UpgradeType { get; set; } = string.Empty; // engine, tires, suspension, brakes, drivetrain
+    public int Level { get; set; } // 1-5
+    public int CashCost { get; set; }
+    public int PerformanceIncrease { get; set; }
+}
+
+public class CareerProgress
+{
+    public int Id { get; set; }
+    public int UserId { get; set; }
+    public string SeriesName { get; set; } = string.Empty; // e.g., "Road Collection", "Endurance Legends"
+    public string EventName { get; set; } = string.Empty; // e.g., "Brands Hatch GP Circuit"
+    public bool Completed { get; set; }
+    public int StarsEarned { get; set; } // 0-3
+    public double BestTime { get; set; }
+    public DateTime? CompletedAt { get; set; }
+}