Update SDK & Add custom callbacks

[ianrumac]

• Updates iOS SDK to 4.12.10 View iOS SDK release notes.
• Updates Android SDK to 2.7.0 View Android SDK release notes.
• Adds onCustomCallback to PaywallPresentationHandler

Greptile Overview

Greptile Summary

• Bumps native SDK dependencies (Android Superwall SDK 2.7.0, iOS SuperwallKit 4.12.10).
• Adds paywall state to PaywallInfo JSON serialization on both platforms and propagates it to TS/compat types.
• Introduces a new cross-platform onCustomCallback event emitted from native paywalls and a didHandleCustomCallback JS→native response path.
• Wires custom-callback handling into both hooks-based (useSuperwallEvents/usePlacement) and compat (src/compat/index.ts) APIs.

Confidence Score: 2/5

• This PR has correctness risks around custom-callback routing and potential native hangs/leaks, so it should not be merged until those are addressed.
• Custom callbacks can be answered by the wrong JS listener (unscoped useSuperwallEvents), causing incorrect failures; additionally, both iOS and Android native implementations can await indefinitely if JS never replies, retaining futures/continuations. These issues affect runtime behavior in common app setups (global listeners + placements).
• src/useSuperwallEvents.ts, android/src/main/java/expo/modules/superwallexpo/SuperwallExpoModule.kt, ios/SuperwallExpoModule.swift

Important Files Changed

Filename	Overview
.changeset/lemon-beans-wear.md	Adds a changeset noting SDK bumps and custom callbacks.
android/build.gradle	Bumps Superwall Android SDK dependency from 2.6.8 to 2.7.0.
android/src/main/java/expo/modules/superwallexpo/SuperwallExpoModule.kt	Adds onCustomCallback event plumbing and didHandleCustomCallback bridge; introduces risk of hanging callbacks and thread-safety issues with shared mutable future map.
android/src/main/java/expo/modules/superwallexpo/json/PaywallInfo.kt	Adds PaywallInfo.state serialization into JSON map.
ios/Json/PaywallInfo+Json.swift	Adds PaywallInfo.state serialization into JSON map.
ios/SuperwallExpo.podspec	Bumps SuperwallKit dependency from 4.12.9 to 4.12.10.
ios/SuperwallExpoModule.swift	Adds onCustomCallback async handler and didHandleCustomCallback bridge; introduces risk of leaked continuations/hanging callbacks due to unbounded continuation storage.
src/SuperwallExpoModule.ts	Extends native module interface with didHandleCustomCallback method signature.
src/SuperwallExpoModule.types.ts	Adds PaywallInfo.state, plus CustomCallback and CustomCallbackResult types and onCustomCallback event typing.
src/compat/index.ts	Adds compat-layer listener for onCustomCallback and forwards results back to native via didHandleCustomCallback; error handling covers missing handler.
src/compat/lib/PaywallInfo.ts	Adds state field to compat PaywallInfo and populates it from JSON.
src/compat/lib/PaywallPresentationHandler.ts	Adds onCustomCallback handler support to compat PaywallPresentationHandler.
src/usePlacement.ts	Adds onCustomCallback to usePlacement callbacks and passes through to useSuperwallEvents.
src/useSuperwallEvents.ts	Adds onCustomCallback callback and listener that filters by handlerId; current filter logic can cause unscoped listeners to respond and incorrectly fail callbacks.

Sequence Diagram

sequenceDiagram
    autonumber
    participant Paywall as Superwall SDK (native)
    participant Native as Expo Superwall Module (iOS/Android)
    participant JS as JS listener (hooks/compat)

    Paywall->>Native: onCustomCallback(callback)
    Native->>Native: create callbackId + store future/continuation
    Native-->>JS: emit onCustomCallback({callbackId,name,variables,handlerId})

    alt JS handler matches handlerId
        JS->>JS: user onCustomCallback executes
        JS-->>Native: didHandleCustomCallback(callbackId,status,data)
        Native->>Native: resolve future/continuation
        Native-->>Paywall: return CustomCallbackResult
    else no JS handler / wrong listener responds
        JS-->>Native: didHandleCustomCallback(callbackId,"failure")
        Native-->>Paywall: failure branch
    end

    Note over JS,Native: If no didHandleCustomCallback is sent,
    Note over Native: future/continuation remains stored and native awaits indefinitely.

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[greptile-apps]

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