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/FinanceModels.swift

@@ -1,5 +1,7 @@
 import Foundation
 
+// MARK: - FinanceTransaction
+
 struct FinanceTransaction: Codable, Identifiable {
     let id: Int
     var amount: Double
@@ -9,6 +11,17 @@ struct FinanceTransaction: Codable, Identifiable {
     var date: String?
     var createdAt: String?
 
+    var isIncome: Bool { type == "income" }
+
+    var dateFormatted: String {
+        guard let d = date else { return "" }
+        let parts = String(d.prefix(10)).split(separator: "-")
+        guard parts.count == 3 else { return String(d.prefix(10)) }
+        return "\(parts[2]).\(parts[1]).\(parts[0])"
+    }
+
+    var dateOnly: String { String(date?.prefix(10) ?? "") }
+
     enum CodingKeys: String, CodingKey {
         case id, amount, description, type, date
         case categoryId = "category_id"
@@ -16,6 +29,8 @@ struct FinanceTransaction: Codable, Identifiable {
     }
 }
 
+// MARK: - FinanceCategory
+
 struct FinanceCategory: Codable, Identifiable {
     let id: Int
     var name: String
@@ -24,21 +39,66 @@ struct FinanceCategory: Codable, Identifiable {
     var type: String
 }
 
+// MARK: - FinanceSummary
+
 struct FinanceSummary: Codable {
     var totalIncome: Double?
     var totalExpense: Double?
     var balance: Double?
     var carriedOver: Double?
     var month: String?
+    var byCategory: [CategorySpend]?
+    var daily: [DailySpend]?
 
     enum CodingKeys: String, CodingKey {
         case balance, month
         case totalIncome = "total_income"
         case totalExpense = "total_expense"
         case carriedOver = "carried_over"
+        case byCategory = "by_category"
+        case daily
     }
 }
 
+struct CategorySpend: Codable, Identifiable {
+    var id: Int { categoryId ?? 0 }
+    var categoryId: Int?
+    var categoryName: String?
+    var total: Double?
+    var icon: String?
+    var color: String?
+
+    enum CodingKeys: String, CodingKey {
+        case total, icon, color
+        case categoryId = "category_id"
+        case categoryName = "category_name"
+    }
+}
+
+struct DailySpend: Codable, Identifiable {
+    var id: String { date }
+    let date: String
+    let total: Double?
+    let income: Double?
+    let expense: Double?
+}
+
+// MARK: - FinanceAnalytics
+
+struct FinanceAnalytics: Codable {
+    var currentMonth: FinanceSummary?
+    var previousMonth: FinanceSummary?
+    var byCategory: [CategorySpend]?
+
+    enum CodingKeys: String, CodingKey {
+        case currentMonth = "current_month"
+        case previousMonth = "previous_month"
+        case byCategory = "by_category"
+    }
+}
+
+// MARK: - CreateTransactionRequest
+
 struct CreateTransactionRequest: Codable {
     var amount: Double
     var categoryId: Int?