feat(ios): implement Phase 1 permission methods and fix build issues

Implement checkPermissionStatus() and requestNotificationPermissions()
methods for iOS plugin, matching Android functionality. Fix compilation
errors across plugin files and add comprehensive build/test infrastructure.

Key Changes:
- Add checkPermissionStatus() and requestNotificationPermissions() methods
- Fix 13+ categories of Swift compilation errors (type conversions, logger
  API, access control, async/await, etc.)
- Create DailyNotificationScheduler, DailyNotificationStorage,
  DailyNotificationStateActor, and DailyNotificationErrorCodes components
- Fix CoreData initialization to handle missing model gracefully for Phase 1
- Add iOS test app build script with simulator auto-detection
- Update directive with lessons learned from build and permission work

Build Status: ✅ BUILD SUCCEEDED
Test App: ✅ Ready for iOS Simulator testing

Files Modified:
- doc/directives/0003-iOS-Android-Parity-Directive.md (lessons learned)
- ios/Plugin/DailyNotificationPlugin.swift (Phase 1 methods)
- ios/Plugin/DailyNotificationModel.swift (CoreData fix)
- 11+ other plugin files (compilation fixes)

Files Added:
- ios/Plugin/DailyNotificationScheduler.swift
- ios/Plugin/DailyNotificationStorage.swift
- ios/Plugin/DailyNotificationStateActor.swift
- ios/Plugin/DailyNotificationErrorCodes.swift
- scripts/build-ios-test-app.sh
- scripts/setup-ios-test-app.sh
- test-apps/ios-test-app/ (full test app)
- Multiple Phase 1 documentation files

ios/Plugin/NotificationContent.swift

@@ -15,19 +15,68 @@ import Foundation
  * This class encapsulates all the information needed for a notification
  * including scheduling, content, and metadata.
  */
-class NotificationContent {
+class NotificationContent: Codable {
     
     // MARK: - Properties
     
     let id: String
     let title: String?
     let body: String?
-    let scheduledTime: TimeInterval // milliseconds since epoch
-    let fetchedAt: TimeInterval // milliseconds since epoch
+    let scheduledTime: Int64 // milliseconds since epoch (matches Android long)
+    let fetchedAt: Int64 // milliseconds since epoch (matches Android long)
     let url: String?
     let payload: [String: Any]?
     let etag: String?
     
+    // MARK: - Codable Support
+    
+    enum CodingKeys: String, CodingKey {
+        case id
+        case title
+        case body
+        case scheduledTime
+        case fetchedAt
+        case url
+        case payload
+        case etag
+    }
+    
+    required init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        id = try container.decode(String.self, forKey: .id)
+        title = try container.decodeIfPresent(String.self, forKey: .title)
+        body = try container.decodeIfPresent(String.self, forKey: .body)
+        scheduledTime = try container.decode(Int64.self, forKey: .scheduledTime)
+        fetchedAt = try container.decode(Int64.self, forKey: .fetchedAt)
+        url = try container.decodeIfPresent(String.self, forKey: .url)
+        // payload is encoded as JSON string
+        if let payloadString = try? container.decodeIfPresent(String.self, forKey: .payload),
+           let payloadData = payloadString.data(using: .utf8),
+           let payloadDict = try? JSONSerialization.jsonObject(with: payloadData) as? [String: Any] {
+            payload = payloadDict
+        } else {
+            payload = nil
+        }
+        etag = try container.decodeIfPresent(String.self, forKey: .etag)
+    }
+    
+    func encode(to encoder: Encoder) throws {
+        var container = encoder.container(keyedBy: CodingKeys.self)
+        try container.encode(id, forKey: .id)
+        try container.encodeIfPresent(title, forKey: .title)
+        try container.encodeIfPresent(body, forKey: .body)
+        try container.encode(scheduledTime, forKey: .scheduledTime)
+        try container.encode(fetchedAt, forKey: .fetchedAt)
+        try container.encodeIfPresent(url, forKey: .url)
+        // Encode payload as JSON string
+        if let payload = payload,
+           let payloadData = try? JSONSerialization.data(withJSONObject: payload),
+           let payloadString = String(data: payloadData, encoding: .utf8) {
+            try container.encode(payloadString, forKey: .payload)
+        }
+        try container.encodeIfPresent(etag, forKey: .etag)
+    }
+    
     // MARK: - Initialization
     
     /**
@@ -45,8 +94,8 @@ class NotificationContent {
     init(id: String, 
          title: String?, 
          body: String?, 
-         scheduledTime: TimeInterval, 
-         fetchedAt: TimeInterval, 
+         scheduledTime: Int64, 
+         fetchedAt: Int64, 
          url: String?, 
          payload: [String: Any]?, 
          etag: String?) {
@@ -69,7 +118,7 @@ class NotificationContent {
      * @return Scheduled time as Date object
      */
     func getScheduledTimeAsDate() -> Date {
-        return Date(timeIntervalSince1970: scheduledTime / 1000)
+        return Date(timeIntervalSince1970: Double(scheduledTime) / 1000.0)
     }
     
     /**
@@ -78,7 +127,7 @@ class NotificationContent {
      * @return Fetched time as Date object
      */
     func getFetchedTimeAsDate() -> Date {
-        return Date(timeIntervalSince1970: fetchedAt / 1000)
+        return Date(timeIntervalSince1970: Double(fetchedAt) / 1000.0)
     }
     
     /**
@@ -113,7 +162,8 @@ class NotificationContent {
      * @return true if scheduled time is in the future
      */
     func isInTheFuture() -> Bool {
-        return scheduledTime > Date().timeIntervalSince1970 * 1000
+        let currentTime = Int64(Date().timeIntervalSince1970 * 1000)
+        return scheduledTime > currentTime
     }
     
     /**
@@ -122,7 +172,7 @@ class NotificationContent {
      * @return Age in seconds at scheduled time
      */
     func getAgeAtScheduledTime() -> TimeInterval {
-        return (scheduledTime - fetchedAt) / 1000
+        return Double(scheduledTime - fetchedAt) / 1000.0
     }
     
     /**
@@ -150,9 +200,26 @@ class NotificationContent {
      * @return NotificationContent instance
      */
     static func fromDictionary(_ dict: [String: Any]) -> NotificationContent? {
-        guard let id = dict["id"] as? String,
-              let scheduledTime = dict["scheduledTime"] as? TimeInterval,
-              let fetchedAt = dict["fetchedAt"] as? TimeInterval else {
+        guard let id = dict["id"] as? String else {
+            return nil
+        }
+        
+        // Handle both Int64 and TimeInterval (Double) for backward compatibility
+        let scheduledTime: Int64
+        if let time = dict["scheduledTime"] as? Int64 {
+            scheduledTime = time
+        } else if let time = dict["scheduledTime"] as? Double {
+            scheduledTime = Int64(time)
+        } else {
+            return nil
+        }
+        
+        let fetchedAt: Int64
+        if let time = dict["fetchedAt"] as? Int64 {
+            fetchedAt = time
+        } else if let time = dict["fetchedAt"] as? Double {
+            fetchedAt = Int64(time)
+        } else {
             return nil
         }