docs(capacitor): document Capacitor 7 minimum and v2 removal for v9 (#4592)

Author: ShaneK

docs/reference/support.md

@@ -97,16 +97,20 @@ Note that later versions of Ionic do not support iOS 13; see [mobile support tab
 
 ### Native Bridges
 
-|  Framework   |               Cordova                |        Capacitor         |
-| :----------: | :----------------------------------: | :----------------------: |
-| V5 - Angular | cordova-android 8.X, cordova-ios 5.X |        Latest 2.X        |
-|  V5 - React  |            Not supported             |        Latest 2.x        |
-|   V5 - Vue   |            Not supported             |        Latest 2.X        |
-| V4 - Angular | cordova-android 8.X, cordova-ios 5.X |        Latest 2.X        |
-|  V4 - React  |            Not supported             |        Latest 2.x        |
-|      V3      | cordova-android 8.X, cordova-ios 5.X | Not officially supported |
+|   Framework    |               Cordova                |        Capacitor         |
+| :------------: | :----------------------------------: | :----------------------: |
+|  V9: Angular   | cordova-android 8.X, cordova-ios 5.X |           7.X+           |
+|   V9: React    |            Not supported             |           7.x+           |
+|    V9: Vue     |            Not supported             |           7.X+           |
+| V5-V8: Angular | cordova-android 8.X, cordova-ios 5.X |           2.X+           |
+|  V5-V8: React  |            Not supported             |           2.x+           |
+|   V5-V8: Vue   |            Not supported             |           2.X+           |
+|  V4: Angular   | cordova-android 8.X, cordova-ios 5.X |           2.X+           |
+|   V4: React    |            Not supported             |           2.x+           |
+|       V3       | cordova-android 8.X, cordova-ios 5.X | Not officially supported |
 
 - As iOS and Android (and related tools) are updated, you can expect more updates for Cordova and Capacitor, so it is recommended to stay on the latest version(s) of Cordova and Capacitor.
+- Starting with Ionic v9, Capacitor 7 is the minimum officially supported version. Earlier versions of Ionic ran on Capacitor 2 and later.
 
 ### Ionic Platform & Products
 

docs/updating/9-0.md

@@ -432,6 +432,12 @@ Safari >=16
 iOS >=16
 ```
 
+### Capacitor
+
+Ionic 9 officially supports Capacitor 7 and later. Native platform detection no longer falls back to the Capacitor 2 `isNative` flag; `isCapacitorNative` now relies solely on `Capacitor.isNativePlatform()`, which was added in Capacitor 3.
+
+If your app is still on Capacitor 2, it will no longer be detected as running on a native platform, so `isPlatform('capacitor')`, `isPlatform('hybrid')`, and `getPlatforms()` will report `web` instead of native. Upgrade to Capacitor 7 or later by following the [Capacitor updating guides](https://capacitorjs.com/docs/updating/7-0).
+
 ### Legacy Picker
 
 1. Remove any usages of the `ion-picker-legacy` and `ion-picker-legacy-column` components. These components have been removed in Ionic 9. The recommended path forward is to use `ion-picker` inside a modal. Review the [Picker in Modal documentation](../api/picker.md#picker-in-modal) for more information.