Unify sharing codec and wire iOS KMP actuals

iosApp/iosApp/Residence/ResidenceSharingManager.swift

@@ -29,12 +29,6 @@ class ResidenceSharingManager: ObservableObject {
 
     // MARK: - Private Properties
 
-    private let jsonEncoder: JSONEncoder = {
-        let encoder = JSONEncoder()
-        encoder.outputFormatting = .prettyPrinted
-        return encoder
-    }()
-
     private let jsonDecoder = JSONDecoder()
 
     private init() {}
@@ -70,21 +64,14 @@ class ResidenceSharingManager: ObservableObject {
             return nil
         }
 
-        // Create Swift-compatible structure for JSON encoding
-        let exportData = SharedResidenceExport(from: sharedResidence)
-
-        guard let jsonData = try? jsonEncoder.encode(exportData) else {
-            print("ResidenceSharingManager: Failed to encode residence to JSON")
+        let jsonContent = CaseraShareCodec.shared.encodeSharedResidence(sharedResidence: sharedResidence)
+        guard let jsonData = jsonContent.data(using: .utf8) else {
+            print("ResidenceSharingManager: Failed to encode residence package as UTF-8")
             errorMessage = "Failed to create share file"
             return nil
         }
 
-        // Create a safe filename
-        let safeName = residence.name
-            .replacingOccurrences(of: " ", with: "_")
-            .replacingOccurrences(of: "/", with: "-")
-            .prefix(50)
-        let fileName = "\(safeName).casera"
+        let fileName = CaseraShareCodec.shared.safeShareFileName(displayName: residence.name)
         let tempURL = FileManager.default.temporaryDirectory.appendingPathComponent(fileName)
 
         do {