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/Models/UserModels.swift

@@ -0,0 +1,41 @@
+import Foundation
+
+// MARK: - UserProfile
+
+struct UserProfile: Codable {
+    var telegramChatId: String?
+    var morningNotification: Bool?
+    var eveningNotification: Bool?
+    var morningTime: String?
+    var eveningTime: String?
+    var timezone: String?
+
+    enum CodingKeys: String, CodingKey {
+        case telegramChatId = "telegram_chat_id"
+        case morningNotification = "morning_notification"
+        case eveningNotification = "evening_notification"
+        case morningTime = "morning_time"
+        case eveningTime = "evening_time"
+        case timezone
+    }
+}
+
+// MARK: - UpdateProfileRequest
+
+struct UpdateProfileRequest: Codable {
+    var telegramChatId: String?
+    var morningNotification: Bool?
+    var eveningNotification: Bool?
+    var morningTime: String?
+    var eveningTime: String?
+    var timezone: String?
+
+    enum CodingKeys: String, CodingKey {
+        case telegramChatId = "telegram_chat_id"
+        case morningNotification = "morning_notification"
+        case eveningNotification = "evening_notification"
+        case morningTime = "morning_time"
+        case eveningTime = "evening_time"
+        case timezone
+    }
+}