feat: full Pulse Mobile implementation - all modules

- Phase 0: project.yml fixes (CODE_SIGN_ENTITLEMENTS confirmed)
- Phase 1: Enhanced models (HabitModels, TaskModels, FinanceModels, SavingsModels, UserModels)
- Phase 1: Enhanced APIService with all endpoints (habits/log/stats, tasks/uncomplete, finance/analytics, savings/*)
- Phase 2: DashboardView rewrite - day progress bar, 4 stat cards, habit/task lists with Undo (3 sec)
- Phase 3: TrackerView - HabitListView (streak badge, swipe delete, archive), TaskListView (priority, overdue), StatisticsView (heatmap 84 days, line chart, bar chart via Swift Charts)
- Phase 4: FinanceView rewrite - month picker, summary card, top expenses progress bars, pie chart, line chart, transactions by day, analytics tab with bar chart + month comparison
- Phase 5: SavingsView rewrite - overview with overdue block, categories tab with type icons, operations tab with category filter + add sheet
- Phase 6: SettingsView - dark/light theme, profile edit, telegram chat id, notifications toggle + time, timezone picker, logout
- Added: AddHabitView with weekly day selector + interval days
- Added: AddTaskView with icon/color/due date picker
- Haptic feedback on all toggle actions

PulseHealth/Views/MainTabView.swift

@@ -2,28 +2,32 @@ import SwiftUI
 
 struct MainTabView: View {
     @EnvironmentObject var authManager: AuthManager
+    @AppStorage("colorScheme") private var colorSchemeRaw: String = "dark"
+
+    var preferredColorScheme: ColorScheme? {
+        colorSchemeRaw == "light" ? .light : .dark
+    }
 
     var body: some View {
         TabView {
             DashboardView()
                 .tabItem { Label("Главная", systemImage: "house.fill") }
 
-            TasksView()
-                .tabItem { Label("Задачи", systemImage: "checkmark.circle.fill") }
+            TrackerView()
+                .tabItem { Label("Трекер", systemImage: "chart.bar.fill") }
 
-            HabitsView()
-                .tabItem { Label("Привычки", systemImage: "flame.fill") }
-
-            HealthView()
-                .tabItem { Label("Здоровье", systemImage: "heart.fill") }
+            if authManager.userId == 1 {
+                FinanceView()
+                    .tabItem { Label("Финансы", systemImage: "creditcard.fill") }
+            }
 
             SavingsView()
-                .tabItem { Label("Накопления", systemImage: "chart.bar.fill") }
+                .tabItem { Label("Накопления", systemImage: "building.columns.fill") }
 
-            ProfileView()
-                .tabItem { Label("Профиль", systemImage: "person.fill") }
+            SettingsView()
+                .tabItem { Label("Настройки", systemImage: "gearshape.fill") }
         }
-        .accentColor(Color(hex: "00d4aa"))
-        .preferredColorScheme(.dark)
+        .accentColor(Color(hex: "0D9488"))
+        .preferredColorScheme(preferredColorScheme)
     }
 }