feat(kmp): update debug symbols guide and stubbed targets section (#14458)

Update the debug symbols page of Compose Multiplatform and add a stubbed
target

---------

Co-authored-by: Cursor Agent <[email protected]>

Author: 2 people

docs/platforms/kotlin/guides/compose-multiplatform/index.mdx

@@ -42,8 +42,18 @@ This snippet includes an intentional error, so you can test that everything is w
 
 <PlatformContent includePath="getting-started-verify" />
 
+## Supported Platforms
+
+For a complete list of supported platforms and target presets, see the [Kotlin Multiplatform features documentation](/platforms/kotlin/guides/kotlin-multiplatform/features/#supported-platforms).
+
 ## Debug Symbols
 
 Error stack traces in your app might appear unreadable or obfuscated, making it hard to debug issues. To make stack traces clear and human-readable in Sentry, you need to upload your app's debug symbols.
 
-For step-by-step instructions, see the [Debug Symbols guide](/platforms/kotlin/guides/kotlin-multiplatform/debug-symbols/).
+### Android
+
+For Android applications, you need to manually upload ProGuard mapping files using the `sentry-cli`. Follow the [ProGuard Mapping Upload guide](/cli/dif/#proguard-mapping-upload) for detailed instructions.
+
+### iOS
+
+For iOS applications, follow the [Uploading Debug Symbols guide](/platforms/apple/guides/ios/dsym) to set up debug symbols upload.

docs/platforms/kotlin/guides/kotlin-multiplatform/features/index.mdx

@@ -29,3 +29,14 @@ The table below lists supported platforms and their corresponding presets.
 | macOS           | <ul><li>`macosArm64`</li><li>`macosX64`</li></ul>                                                            |
 | watchOS         | <ul><li>`watchosArm32`</li><li>`watchosArm64`</li><li>`watchosX64`</li><li>`watchosSimulatorArm64`</li></ul> |
 | tvOS            | <ul><li>`tvosArm64`</li><li>`tvosX64`</li><li>`tvosSimulatorArm64`</li></ul>                                 |
+
+## Stubbed Platforms (No-Op Implementations)
+
+You can add these targets to your project and they will compile and satisfy the API surface, but **do nothing at runtime**.
+
+| Target Platform | Target preset                                     |
+|---------------|---------------------------------------------------|
+| JS              | <ul><li>`js`</li></ul>                            |
+| Wasm JS         | <ul><li>`wasmJs`</li></ul>                        |
+| Linux           | <ul><li>`linuxx64`</li><li>`linuxarm64`</li></ul> |
+| Windows         | <ul><li>`mingwx64`</li></ul>                      |

docs/platforms/kotlin/index.mdx

@@ -17,6 +17,7 @@ Select your platform to get started:
 - [Java](/platforms/java)
 - [Android](/platforms/android)
 - [Kotlin Multiplatform](/platforms/kotlin/guides/kotlin-multiplatform/)
+- [Compose Multiplatform](/platforms/kotlin/guides/compose-multiplatform/)
 
 ## Kotlin Extensions