Diagnose Power Apps mobile install/startup failures, npm run dev errors, missing package entry points, or QR/device-opening problems even before an app is loaded. Inspect locally first; restore locked dependencies or restart Metro only with explicit approval, never upgrade packages or patch host/MSAL source.
Install
npx skills add microsoft/power-platform-skills --skill debug-appnpx skills add microsoft/power-platform-skills --skill debug-app -a claude-code -gnpx skills add microsoft/power-platform-skills --skill debug-app -a codex -ggemini skills install https://github.com/microsoft/power-platform-skills.git --path plugins/mobile-apps/skills/debug-appgh skill install microsoft/power-platform-skills debug-appgit clone --depth 1 https://github.com/microsoft/power-platform-skills /tmp/microsoft__power-platform-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__power-platform-skills/plugins/mobile-apps/skills/debug-app ~/.claude/skills/debug-app # Claude Code
cp -R /tmp/microsoft__power-platform-skills/plugins/mobile-apps/skills/debug-app ~/.agents/skills/debug-app # Codex, Cursor, Gemini CLI, Copilot, OpenCode