Phase 1: Package-Based Domain Infrastructure

ENTITIES:
- Package: +11 fields (SortOrder, IsActive, IsBasePackage, SupportsDaya/Direct,
  ActivationFee, DiscountMultiplier, MagicWalletMultiplier, MaxBalancesPerLeg,
  MaxNetworkLevel, MagicWalletMaxDeposit/Credit) + nav props
- PackageFeature: NEW junction entity (Package × ClubFeature) for feature DIFF
- ClubMembership: +4 fields (FirstActivationDate/PackageId, LastActivation/PackageId)
  ActivatedAt kept as [Obsolete] for backward compat
- ClubMembershipCycle: +PackageId FK (tracks which package per cycle)
- WeeklyCommissionPool: +PackageId FK (separate pool per package)
- UserCommissionPayout: +PackageId FK (payout per package)
- NetworkWeeklyBalance: +PackageId FK (balance per package)
- UserWalletChangeLog: +PackageId? FK (optional package tracking)

EF CONFIGS:
- PackageConfiguration: 11 new field configs + indexes
- PackageFeatureConfiguration: NEW (unique PackageId+ClubFeatureId)
- ClubMembershipConfiguration: First/Last Package FKs + LastActivationDate index
- ClubMembershipCycleConfiguration: Package FK
- WeeklyCommissionPoolConfiguration: Package FK + unique(WeekDef,Package)
- UserCommissionPayoutConfiguration: Package FK + unique(User,WeekDef,Package)
- NetworkWeeklyBalanceConfiguration: Package FK + unique(User,WeekDef,Package)
- UserWalletChangeLogConfiguration: Package FK (nullable)

DBCONTEXT:
- DbSet<PackageFeature> added to ApplicationDbContext + IApplicationDbContext

SYSTEMCONSTANTS:
- 9 constants marked [Obsolete] → moved to Package entity
  (ClubMembershipGiftValue, ClubActivationFee, BasePackageAmount, DayaLoanAmount,
   MagicWalletMultiplier, MagicWalletMaxDeposit, MagicWalletMaxCredit,
   CommissionMaxWeeklyBalancesPerLeg, CommissionMaxNetworkLevel)

Build: 0 errors, 610 warnings (40 new = expected Obsolete CS0618)

src/CMSMicroservice.Domain/Common/SystemConstants.cs

@@ -24,12 +24,16 @@ public static class SystemConstants
     
     /// <summary>
     /// مبلغ هدیه حق عضویت باشگاه (ریال) - این مبلغ از کیف پول کم نمی‌شود
+    /// [DEPRECATED] از Package.Price استفاده کنید
     /// </summary>
+    [Obsolete("Moved to Package entity. Use package.Price or package.ActivationFee instead.")]
     public const long ClubMembershipGiftValue = 25_200_000;
     
     /// <summary>
     /// هزینه فعال‌سازی عضویت باشگاه (ریال)
+    /// [DEPRECATED] از Package.ActivationFee استفاده کنید
     /// </summary>
+    [Obsolete("Moved to Package.ActivationFee. Read from Package entity instead.")]
     public const long ClubActivationFee = 25_200_000;
     
     #endregion
@@ -38,13 +42,16 @@ public static class SystemConstants
     
     /// <summary>
     /// مبلغ پکیج طلایی / پایه (ریال) - 56 میلیون تومان
-    /// شامل: هدیه باشگاه + هزینه فعال‌سازی + مزایای دیگر
+    /// [DEPRECATED] از Package.Price استفاده کنید
     /// </summary>
+    [Obsolete("Moved to Package.Price. Read from Package entity instead.")]
     public const long BasePackageAmount = 56_000_000;
     
     /// <summary>
     /// مبلغ وام دایا (ریال) - همان مبلغ پکیج طلایی
+    /// [DEPRECATED] از Package.Price استفاده کنید
     /// </summary>
+    [Obsolete("Moved to Package.Price. Read from Package entity with SupportsDayaPurchase=true.")]
     public const long DayaLoanAmount = 56_000_000;
     
     #endregion
@@ -63,12 +70,16 @@ public static class SystemConstants
     
     /// <summary>
     /// سقف تعادل هفتگی برای هر دست (چپ یا راست) - حداکثر کل = 600
+    /// [DEPRECATED] از Package.MaxBalancesPerLeg استفاده کنید
     /// </summary>
+    [Obsolete("Moved to Package.MaxBalancesPerLeg. Read from Package entity instead.")]
     public const int CommissionMaxWeeklyBalancesPerLeg = 300;
     
     /// <summary>
     /// حداکثر عمق شبکه برای محاسبه کمیسیون (تعداد لول زیرمجموعه)
+    /// [DEPRECATED] از Package.MaxNetworkLevel استفاده کنید
     /// </summary>
+    [Obsolete("Moved to Package.MaxNetworkLevel. Read from Package entity instead.")]
     public const int CommissionMaxNetworkLevel = 15;
     
     /// <summary>
@@ -96,17 +107,23 @@ public static class SystemConstants
 
     /// <summary>
     /// ضریب شارژ کیف‌پول جادویی — واریز × 2.5 = اعتبار
+    /// [DEPRECATED] از Package.MagicWalletMultiplier استفاده کنید
     /// </summary>
+    [Obsolete("Moved to Package.MagicWalletMultiplier. Read from Package entity instead.")]
     public const decimal MagicWalletMultiplier = 2.5m;
 
     /// <summary>
     /// سقف واریز در هر دور جادویی (ریال) — 100M تومان
+    /// [DEPRECATED] از Package.MagicWalletMaxDeposit استفاده کنید
     /// </summary>
+    [Obsolete("Moved to Package.MagicWalletMaxDeposit. Read from Package entity instead.")]
     public const long MagicWalletMaxDeposit = 1_000_000_000;
 
     /// <summary>
     /// سقف اعتبار در هر دور جادویی (ریال) — 250M تومان
+    /// [DEPRECATED] از Package.MagicWalletMaxCredit استفاده کنید
     /// </summary>
+    [Obsolete("Moved to Package.MagicWalletMaxCredit. Read from Package entity instead.")]
     public const long MagicWalletMaxCredit = 2_500_000_000;
 
     #endregion