chore: define view model (#12949)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Introduced a chat interface with message list, empty state view, and
support for user, assistant, and system messages.
* Added a chat manager for session and message handling, including
session creation, message sending, and error management.
* Implemented various chat cell types (attachments, context references,
workflow status, loading, and error cells) with corresponding data
models and view models.
* Enabled asynchronous message sending from the input box with error
alerts and automatic session creation.
* Added workflow and context-related models for advanced chat features.

* **Enhancements**
* Improved UI responsiveness with table view updates and dynamic empty
state handling.
  * Provided a method to clear all attachments in the input box.

* **Bug Fixes / Style**
* Refined code formatting, access control, and minor stylistic
improvements across multiple files for consistency.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/apps/ios/App/App/SafeWKURLSchemeTask.swift

@@ -11,26 +11,24 @@ class SafeWKURLSchemeTask: WKURLSchemeTask, NSObject {
   var origin: any WKURLSchemeTask
   init(origin: any WKURLSchemeTask) {
     self.origin = origin
-    self.request = origin.request
+    request = origin.request
   }
-  
+
   var request: URLRequest
-  
-  func didReceive(_ response: URLResponse) {
+
+  func didReceive(_: URLResponse) {
     <#code#>
   }
-  
-  func didReceive(_ data: Data) {
-    self.origin.didReceive(<#T##response: URLResponse##URLResponse#>)
+
+  func didReceive(_: Data) {
+    origin.didReceive(<#T##response: URLResponse##URLResponse#>)
   }
-  
+
   func didFinish() {
-    self.origin.didFinish()
+    origin.didFinish()
   }
-  
+
   func didFailWithError(_ error: any Error) {
-    self.origin.didFailWithError(error)
+    origin.didFailWithError(error)
   }
-  
-  
 }