<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- New Features
- Added a Subscription section in Mobile Settings (for signed-in users)
with plan info and an Upgrade button that opens the native paywall.
- Supports showing “Pro” and “AI” paywalls.
- Integrated native paywall provider on iOS.
- Style
- Introduced new styling for the subscription card, content, and button.
- Localization
- Added English strings for subscription title, description, and button.
- Chores
- Minor iOS project cleanup and internal wiring to enable the paywall
module.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- New Features
- Introduced a new iOS Paywall plugin with a simple API to display a
paywall and receive a success response.
- Added JavaScript wrapper and type definitions for easy integration.
- Refactor
- Reorganized the iOS project structure for plugins.
- Chores
- Removed unused legacy iOS plugins to streamline the app and reduce
build complexity.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added a global API to check the AI button feature flag status.
* **Bug Fixes**
* Improved handling for the AI button feature: the app now checks the
feature flag before proceeding and provides a clear error if the feature
is disabled.
* **Refactor**
* Removed all AI button presentation and dismissal logic from the app.
* Deleted unused plugin interfaces and registration related to the AI
button feature.
* **Chores**
* Updated project metadata and build configuration for iOS.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
close AF-1663, AF-1756
- new global `ModalConfigContext`
- new logic to judge whether inside modal
- render `✕` for PageHeader back if inside modal
- only enable `NavigationGesture` when there is `<` in PageHeader
EYHN