feat: Add PaymentExtension-to-Mono-Repo

[BrandonStalnaker]

Background

• Move the Payment Extension repo into the mono repo and mirror it the original repo for release.

What Has Changed

• Added in the rokt-payment-extension repor and updated the CI to support releasing and testing it.

Checklist

• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have added tests that prove my fix is effective or that my feature works.
• I have tested this locally.

Reference Issue (For employees only. Ignore if you are an outside contributor)

• Closes https://go/j/[ticket-number]

[cursor]

PR Summary

High Risk
Introduces live payment flows (Stripe, Apple Pay, redirect URLs) and changes release mirroring (force-push) and CocoaPods ordering—mistakes affect partner checkouts and published artifacts.

Overview
Adds RoktPaymentExtension under Kits/rokt-payment-extension/rokt-payment-extension-ios as a first-class kit: Stripe-backed Apple Pay/card and Afterpay/Clearpay via PaymentExtension, with urlScheme + Info.plist validation, filtered redirect handling, unit tests, and mirror to ROKT/rokt-payment-extension-ios.

RoktSDKPlus now pins RoktPaymentExtension to the same ecosystem semver as mParticle (SPM/CocoaPods), with local monorepo paths when USE_LOCAL_VERSION is set—replacing the separate 2.x line.

Release/CI: Kits/matrix.json registers the new kit (pod_lint_standalone, mirror_force_push_main, ROKT org); pod lint can omit core podspecs and optionally add related podspecs; draft bumps payment extension Package.swift version; publish may force-push mirror main and waits for RoktPaymentExtension on CocoaPods before RoktSDKPlus; docs updated in RELEASE.md.

^{Reviewed by Cursor Bugbot for commit c688ca2. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

📦 SDK Size Impact Report

Measures how much the SDK adds to an app's size (with-SDK minus without-SDK).

Metric	Target Branch	This PR	Change
App Bundle Impact	1.77 MB	1.77 MB	+N/A
Executable Impact	848 bytes	848 bytes	+N/A
XCFramework Size	6.45 MB	6.45 MB	+N/A

➡️ SDK size impact change is minimal.

Raw measurements

Target branch (main):

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1900,"with_sdk_executable_size_bytes":76312,"sdk_impact_kb":1816,"sdk_executable_impact_bytes":848,"xcframework_size_kb":6604}

This PR:

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1900,"with_sdk_executable_size_bytes":76312,"sdk_impact_kb":1816,"sdk_executable_impact_bytes":848,"xcframework_size_kb":6604}

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

There are 2 total unresolved issues (including 1 from previous review).

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, have a team admin enable autofix in the Cursor dashboard.}

^{Reviewed by Cursor Bugbot for commit c688ca2. Configure here.}

[nickolas-dimitrakas]

LGTM