skip-android-bridge 0.6.1: fromJavaObject references UserDefaultsAccess outside #if SKIP guard, breaking Android cross-compile

Description:**

Environment

• skip-android-bridge: 0.6.1
• skip-fuse-ui: 1.14.0
• Swift toolchain: swift-6.2.3-RELEASE
• Swift SDK: aarch64-unknown-linux-android28
• Host: macOS, building for Android via Xcode/Skip plugin

What happens

The Android cross-compile step fails with:

Sources/SkipAndroidBridge/AndroidUserDefaults.swift:186:31: error: cannot find 'UserDefaultsAccess' in scope

Full command that fails (run by the Skip plugin):

swift build \
  --swift-sdk aarch64-unknown-linux-android28 \
  --configuration debug \
  -Xswiftc -DSKIP_BRIDGE \
  -Xswiftc -DTARGET_OS_ANDROID \
  --product SkipSpike

Root cause

In AndroidUserDefaults.swift, the JObjectProtocol/JConvertible conformance extension (line 184) sits outside the #if SKIP block but references UserDefaultsAccess, which is defined inside #if SKIP (line 197):

// line 184 — outside #if SKIP
extension AndroidUserDefaults : JObjectProtocol, JConvertible {
    public static func fromJavaObject(_ obj: JavaObjectPointer?, options: JConvertibleOptions) -> Self {
        return try! Self.init(UserDefaultsAccess(...))  // ← UserDefaultsAccess not in scope here
    }
    ...
}

#if SKIP  // line 194

public class UserDefaultsAccess {  // ← defined here, too late
    ...
}

The cross-compile uses -DSKIP_BRIDGE and -DTARGET_OS_ANDROID but not -DSKIP, so UserDefaultsAccess is never declared when the extension is compiled.

What was tried

Moving the extension inside #if SKIP resolves the UserDefaultsAccess scope error but produces a new transpiler error:

error: This API is implemented as a Kotlin extension function. 
This release does not support bridging from Swift to Kotlin extension functions

So the extension can't live inside #if SKIP either. The root fix likely needs UserDefaultsAccess to be declared before/outside the #if SKIP block (at minimum for its type signature), or the conformance extension needs a different approach for the cross-compile path.

Impact

Any project depending on skip-fuse-ui >= 1.14.0 (which requires skip-android-bridge >= 0.6.1) fails to build for Android. This blocks all Android builds introduced by this version combination.

I'm quite new to swift and skip - coming from flutter to try and nuke the BLE issues we've been constantly hitting. The above is info I managed to divine through use of AI tooling.

Compile through Xcode works fine for iOS

Start in Sources/SkipAndroidBridge/AndroidUserDefaults.swift around the JObjectProtocol/JConvertible extension and the #if SKIP block defining UserDefaultsAccess. Reproduce the reported swift build with the Android SDK and compiler flags, then determine a compatible arrangement that avoids both the missing-type and Kotlin-extension transpiler errors. Done means the Skip plugin Android cross-compile succeeds for the reported dependency versions.