docs: add Capacitor 9 upgrade guide with iOS deprecated API removals

docs/main/updating/9-0.md

@@ -0,0 +1,75 @@
+---
+title: Updating to 9.0
+description: Guide for updating Capacitor from v8 to v9 in your app
+slug: /updating/9-0
+---
+
+# Updating from Capacitor 8 to Capacitor 9
+
+In this guide, you'll find steps to update your project to the current Capacitor 9 version as well as a list of breaking changes.
+
+## iOS
+
+The following guide describes how to upgrade your Capacitor 8 iOS project to Capacitor 9.
+
+### Raise iOS Deployment Target
+
+Capacitor 9 requires iOS 16.0 or greater.
+
+Do the following for your Xcode project: select the **Project** within the project editor and open the **Build Settings** tab. Under the **Deployment** section, change **iOS Deployment Target** to **iOS 16.0**. Repeat the same steps for any app **Targets**.
+
+Then, if the project is using CocoaPods, open `ios/App/Podfile` and update the iOS version to 16.0:
+
+```ruby
+platform :ios, '16.0'
+```
+
+## Breaking changes in @capacitor/ios
+
+Capacitor 9 removes the Swift and Objective-C APIs that were deprecated in previous major versions. If your app or plugin still uses any of them, replace them as follows.
+
+### `CAPBridge` compatibility class removed
+
+The `CAPBridge` class was a compatibility shim and has been removed entirely. Use the replacements below:
+
+| Removed | Replacement |
+| :------ | :---------- |
+| `CAPBridge.statusBarTappedNotification` | `Notification.Name.capacitorStatusBarTapped` |
+| `CAPBridge.getLastUrl()` | `ApplicationDelegateProxy.shared.lastURL` |
+| `CAPBridge.handleOpenUrl(_:_:)` | `ApplicationDelegateProxy.shared.application(_:open:options:)` |
+| `CAPBridge.handleContinueActivity(_:_:)` | `ApplicationDelegateProxy.shared.application(_:continue:restorationHandler:)` |
+| `CAPBridge.handleAppBecameActive(_:)` | No longer needed, it was a no-op |
+
+### Bridge (`CAPBridgeProtocol`) methods removed
+
+| Removed | Replacement |
+| :------ | :---------- |
+| `getWebView()` | `webView` property |
+| `isSimulator()` | `isSimEnvironment` property |
+| `isDevMode()` | `isDevEnvironment` property |
+| `getStatusBarVisible()` / `setStatusBarVisible(_:)` | `statusBarVisible` property |
+| `getStatusBarStyle()` / `setStatusBarStyle(_:)` | `statusBarStyle` property |
+| `setStatusBarAnimation(_:)` | `statusBarAnimation` property |
+| `getUserInterfaceStyle()` | `userInterfaceStyle` property |
+| `getLocalUrl()` | `config.localURL` |
+| `getSavedCall(_:)` | `savedCall(withID:)` |
+| `releaseCall(callbackId:)` | `releaseCall(withID:)` |
+| `presentVC(_:animated:completion:)` | `viewController?.present(_:animated:completion:)` |
+| `dismissVC(animated:completion:)` | `viewController?.dismiss(animated:completion:)` |
+| `modulePrint(_:_:)` | `CAPLog.print(_:)` |
+
+### Other removals
+
+| Removed | Replacement |
+| :------ | :---------- |
+| `CAPNotifications` enum | `Notification.Name.capacitor*` constants (e.g. `Notification.Name.capacitorOpenURL`) |
+| `PluginCallErrorData`, `PluginResultData` and `JSResultBody` typealiases | `PluginCallResultData` |
+| `CAPPluginCall.hasOption(_:)` | Typed accessors (`getString(_:)`, `getInt(_:)`, etc.) |
+| `JSDate.toString(_:)` | No longer needed, dates are mapped to strings during serialization |
+| `InstanceConfiguration.getPluginConfigValue(_:_:)` | `getPluginConfig(_:)` |
+| `InstanceConfiguration.getValue(_:)` / `getString(_:)` | Direct property accessors on `InstanceConfiguration` |
+| `CAPPlugin.getConfigValue(_:)` | `getConfig()` and the typed accessors on `PluginConfig` |
+| `CAPFileManager.getPortablePath(host:uri:)` | `portablePath(fromLocalURL:)` on the bridge |
+| `CapacitorBridge` initializer taking `cordovaConfiguration` | The initializer without the `cordovaConfiguration` parameter |
+| `CapacitorBridge.httpsInterceptorStartIdentifier` | `httpInterceptorStartIdentifier`, all proxied requests are handled by it |
+| `CapacitorUrlRequest.setRequestHeaders([String: String])` | `setRequestHeaders([String: Any])`. Note: the replacement sets header values instead of appending them, so repeated keys overwrite the previous value |

sidebars.js

@@ -32,6 +32,7 @@ module.exports = {
       label: 'Upgrade Guides',
       collapsed: false,
       items: [
+        'main/updating/9-0',
         'main/updating/8-5',
         'main/updating/8-0',
         'main/updating/plugins/8-0',