[bilck]

Problem

The Android bridge serializes SubscriptionStatus.Active as { "type": "active" } and drops
status.entitlements, even though the setter accepts the entitlement array. Reading a status back after
writing Active [premium] therefore returns Active [].

This is still the behaviour on main at 0.3.0:

fun serializeSubscriptionStatus(status: SubscriptionStatus) = JSONObject().apply {
    when (status) {
        is SubscriptionStatus.Active -> put("type", "active")   // entitlements dropped
        is SubscriptionStatus.Inactive -> put("type", "inactive")
        is SubscriptionStatus.Unknown -> put("type", "unknown")
    }
}

The getter and the setter disagree, and iOS does not behave this way. A consumer that reconciles
subscription status against its own backend reads an empty set, computes a union that never matches what it
just wrote, and either pushes the same entitlements repeatedly or concludes the entitlement is missing.

Change

Serialize SubscriptionStatus.Active.entitlements with the existing full entitlement serializer, matching
the iOS bridge. The function moves from companion scope to SuperwallUnityBridge instance scope, which is
where it can reach serializeEntitlementSet. No call sites change; getSubscriptionStatus() is unaffected
apart from the richer payload.

Verification

• Rebased onto main at 0.3.0; the two files in this PR are the entire diff.
• Observed on a physical Android device running 0.3.0: Unity logged Active [] at cold launch while the
  native SDK held an active entitlement, and the C# side then saw its own union as a no-op. With this change
  the active entitlement id and its product are present in the getter payload.
• Android bridge assembleRelease succeeds with AGP 9.0.1 / Gradle 9.1.0 and with AGP 8.5.2 / Gradle 8.7.
• No iOS code changes.

Tests (added 2026-10-29)

• New JVM unit tests for the Android bridge, in the CI harness (ci~/android-harness/bridge-tests/, so nothing test-only ships in the package), run by native.yml on both AGP versions after assembleRelease: gradle :SuperwallSDK:testDebugUnitTest.
• SubscriptionStatusSerializationTest pins the JSON getSubscriptionStatus() returns: active carries every entitlement in the full entitlement shape; inactive and unknown carry no entitlements key.
• Verified locally (AGP 8.5.2): 3/3 pass; with the put("entitlements", ...) line removed, 2 of 3 fail, so the test guards this regression. The AGP 9.0.1 job has only been run by CI.
• The harness now writes the androidlib's build outputs to ci~/android-harness/build/ (gitignored) instead of Plugins/Android/SuperwallSDK.androidlib/build/, and accepts -PbuildToolsVersion=<x> for machines without AGP's default build-tools.

[bilck]

Rebased onto main at 0.3.0 and refreshed the description - the previous head predated the 0.3.0 merge and had gone stale. The getter on current main still drops the entitlement set, so the fix still applies; the diff is unchanged in substance (one CHANGELOG line plus the Android bridge).