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Material Design 3 and Android platform guidelines. Use when building Android apps with Jetpack Compose or XML layouts, implementing Material You, navigation, or accessibility. Triggers on tasks involving Android UI, Compose components, dynamic color, or Material Design compliance.

Apple Human Interface Guidelines for iPhone. Use when building, reviewing, or refactoring SwiftUI/UIKit interfaces for iOS. Triggers on tasks involving iPhone UI, iOS components, accessibility, Dynamic Type, Dark Mode, or HIG compliance.

Apple Human Interface Guidelines for iPad. Use when building iPad-optimized interfaces, implementing multitasking, pointer support, keyboard shortcuts, or responsive layouts. Triggers on tasks involving iPad, Split View, Stage Manager, sidebar navigation, or trackpad support.

Apple Human Interface Guidelines for Mac. Use when building macOS apps with SwiftUI or AppKit, implementing menu bars, toolbars, window management, or keyboard shortcuts. Triggers on tasks involving Mac UI, desktop apps, or Mac Catalyst.

Apple Human Interface Guidelines for Apple TV. Use when building tvOS apps with focus-based navigation, Siri Remote input, or living room viewing experiences. Triggers on tasks involving Apple TV, tvOS, 10-foot UI, or media playback.

Apple Human Interface Guidelines for Apple Vision Pro. Use when building spatial computing apps, implementing eye/hand input, or designing immersive experiences. Triggers on tasks involving visionOS, RealityKit, spatial UI, or mixed reality.

Apple Human Interface Guidelines for Apple Watch. Use when building watchOS apps, complications, or workout features. Triggers on tasks involving Watch UI, Digital Crown, glanceable interfaces, or wrist-based interactions.

Web platform design and accessibility guidelines. Use when building web interfaces, auditing accessibility, implementing responsive layouts, or reviewing web UI code. Triggers on tasks involving HTML, CSS, web components, WCAG compliance, responsive design, or web performance.

Audit a codebase for maintenance and modernization. Challenges scope, reviews architecture/quality/tests/performance/dependencies, files deferred work via bd. Language-specific addendums for iOS/Swift, Go, and Web/JS/CSS activate automatically based on what's in the repo. Supports monorepos with mixed stacks.

Autonomous multi-team codebase improvement with narrow (goal-directed) and broad (hypothesis-divergent) modes

Use for typography evaluation, cleanup, and composition guidance across web, iOS, Android, print, and presentations.

Reduce Rust binary size safely across CLIs, servers, libraries, WASM targets, and embedded systems. Use when asked to shrink, strip, slim, optimize, or audit Rust build artifacts, Cargo profiles, dependency trees, monomorphization, or post-build packing.

Reduce Go binary size safely across CLIs, daemons, libraries, plugins, Wasm targets, and packaged apps. Use when asked to shrink, strip, slim, optimize, or audit Go build artifacts, linker flags, build tags, CGO usage, embedded assets, or post-build packing.