Skills

Deep, single-topic capabilities. Load the relevant skill into your agent's context for focused, expert implementation guidance. Each file follows the same structure: Overview · Use Cases · Best Practices · Anti-Patterns · Checklist · Code Examples · Common Interview Questions · AI Implementation Notes.

Platform layout. Skills are split by platform inside each topic — <topic>/ios/, <topic>/android/, <topic>/flutter/, … — and each file declares platform: in its front-matter. Load only the platform you're working on. Each entry below is tagged with its platform; iOS is the most complete set, and Flutter ships a foundation pack. Porting a skill? Add it in the sibling platform folder and cross-link its counterpart (see CONTRIBUTING.md). Flutter package choices are centralized in standards/flutter_standards.md.

Architecture

• mvvm.md (iOS)
• mvp.md (iOS)
• clean_architecture.md (iOS)
• clean_architecture.md (Flutter)
• state_management.md (Flutter)
• dependency_injection.md (iOS)
• dependency_injection.md (Flutter)
• repository_pattern.md (iOS)
• repository_pattern.md (Flutter)
• coordinator_navigation.md (iOS)
• router_navigation.md (Flutter)
• platform_channels.md (Flutter)
• modularization.md (iOS)

UI

Note: apart from the cross-paradigm iPhone Duo skill, skills/ui/ holds UIKit files only because SwiftUI's equivalent guidance lives in standards/swiftui_standards.md and agents/swiftui_expert.md.

• uikit_view_layer.md (iOS)
• massive_view_controller.md (iOS)
• iphone_duo_adaptive_layout.md (iOS — SwiftUI + UIKit: resizing, reserved regions, vertical bars, arrangement views)

Flutter widget guidance lives in standards/flutter_standards.md and agents/flutter_expert.md; the native boundary is covered by platform_channels.md.

Concurrency

• promisekit_to_async.md (iOS)

Networking

• rest_api.md (iOS)
• rest_api.md (Flutter)
• graphql.md (iOS)
• websocket.md (iOS)
• websocket.md (Flutter)
• sse.md (iOS)
• pagination.md (iOS)
• pagination.md (Flutter)
• file_upload.md (iOS)

Security

• oauth2.md (iOS)
• oauth2.md (Flutter)
• jwt.md (iOS)
• ssl_pinning.md (iOS)
• ssl_pinning.md (Flutter)
• certificate_pinning.md (iOS)
• aes_encryption.md (iOS)
• keychain.md (iOS)
• secure_storage.md (Flutter)
• biometric_auth.md (iOS)

Storage

• coredata.md (iOS)
• sqlite.md (iOS)
• local_persistence.md (Flutter)
• offline_sync.md (iOS)
• offline_sync.md (Flutter)
• caching.md (iOS)

Notifications

• apns.md (iOS)
• fcm.md (iOS)
• deep_links.md (iOS)

No Flutter notification skill yet. Flutter deep links are covered in router_navigation.md.

Testing

• unit_testing.md (iOS)
• unit_testing.md (Android)
• unit_testing.md (Flutter)
• integration_testing.md (iOS)
• ui_testing.md (iOS)
• widget_testing.md (Flutter)

Performance

• memory_optimization.md (iOS)
• startup_optimization.md (iOS)
• battery_optimization.md (iOS)
• rendering_optimization.md (Flutter)