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auditing-compose-performance

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Use this skill to run an end-to-end Jetpack Compose performance audit when the symptom is broad ("the app feels sluggish", "scroll is rough everywhere", "we're starting a perf sprint", "what should we fix first?"). Orchestrates the four-phase Measure → Diagnose → Fix → Verify loop by sequencing the 25 focused skills (release-mode setup, R8, Baseline Profiles, Compose Compiler reports, stability inference, Layout Inspector, `@TraceRecomposition`, stabilization, strong skipping, phase-deferral, derivedStateOf, lazy layouts, lazy prefetch, Modifier.Node, modifier ordering, flow collection, effects, CI gates, hot-reload) and produces a written audit report with Before/After Macrobenchmark numbers. Use when the developer wants a perf sprint kickoff, a pre-release perf gate, onboarding to a perf-troubled codebase, or a written deliverable. Use when the user mentions "audit", "perf review", "perf sprint", "where do I start", or has no specific symptom yet.

audit/auditing-compose-performance/SKILL.md

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# Auditing Compose Performance — the Measure → Diagnose → Fix → Verify orchestrator

This is the highest-level entry point in the `compose-performance-skills` library. When the developer's symptom is broad — "the app feels sluggish", "scroll is rough everywhere", "we're starting a perf sprint", "where do we even start?" — Claude enters here. The orchestrator does **NOT** replace the 25 focused skills; it sequences them through a four-phase loop and produces a written audit report at the end.

The phases are **Measure → Diagnose → Fix → Verify**, run in order, never skipped. Phase 1 establishes baseline numbers from a release + R8 build on a real device, because anything else is fiction. Phase 2 turns symptoms into named causes from the Compose Compiler reports, Layout Inspector, and runtime tracing. Phase 3 applies one targeted fix at a time, re-measuring between fixes so the delta of each change is provable. Phase 4 regenerates the Baseline Profile, locks in a CI stability gate, and commits the baseline files so regressions cannot slip back.

Perf work without measurement is guessing. Skydoves hot take #1 applies throughout: **DO NOT** chase 100% skippability — that is a diagnostic on a compiler report, not the goal. The goal is `FrameTimingMetric` and `StartupTimingMetric` improvement on a real device.

## When to use this skill

- The developer reports broad sluggishness with no specific surface ("the app feels heavy", "everything is slow").
- A team is kicking off a performance sprint and wants a structured plan.
- A new team member needs onboarding to a perf-troubled codebase.
- A pre-release perf gate is required before shipping.
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