What problem does it solve? Android projects accumulate redundant and overly broad R8/ProGuard keep rules that disable code shrinking, obfuscation, and optimization, inflating app size. This Skill audits your build configuration and every keep rule, then tells you exactly which rules to remove or narrow. ## Core Features & Use Cases - Build Configuration Audit: Checks build.gradle, build.gradle.kts, and gradle.properties for correct minification, resource shrinking, and R8 full mode settings, with AGP version-specific recommendations. - Redundant Rule Detection: Identifies keep rules already covered by consumer rules bundled in AndroidX, Kotlin, Coroutines, Gson, Retrofit, Room, and Parcelable libraries. - Impact-Ranked Refinement: Ranks remaining keep rules by optimization impact hierarchy and suggests narrow, reflection-aware replacements for broad package wildcards. - Use Case: A developer preparing a release build runs the analysis and receives a report showing that their Gson model package keeps and Retrofit annotation rules are redundant, plus narrower replacements for a package-wide wildcard rule. ## Quick Start Analyze my project's R8 and ProGuard keep rules and tell me which ones to remove or refine.