Drive and screenshot the running Rocket.Chat Desktop dev app (yarn start) through the main-process inspector on port 9339 — trigger menu items (Simulate Download/Update), evaluate in the renderer DOM, capture titlebar screenshots. Use whenever a UI change needs runtime/visual verification that component tests can't see (paint, clipping, colors, animation, layout).
rocketchat npx skillmds@latest add rocketchat/dev-app-verify-2 Follow skills/dev-app-verify/SKILL.md (repo root) — the canonical,
agent-agnostic version of this runbook. It contains the ready-made inspector
script, menu-triggering and DOM-truth recipes, and the three pitfalls that
produce false alarms (window occlusion freezing capturePage, watcher
restarts killing in-flight state, singleton-lock wedges).
This stub exists so Claude Code auto-discovers the skill; keeping the body in one place prevents the two copies from drifting.
rocketchat/rocket.chat.electron/tree/main/.claude/skills/dev-app-verify commit a9f7b5bd56