h0x91b/dev-3.0/30

Added the ask-dev3 agent skill — a router over dev3's features and workflows, auto-installed into every supported agent's skill directory. When the user asks "how do I do X in dev3", the agent loads the skill's map (main flow, on-ramps, verifying work, the tmux terminal, running several agents at once, vocabulary, troubleshooting, standalone features) and teaches the intended flow instead of guessing, then offers to do it. The map is GUI-first, covers a curated core of the most common newcomer questions, and points to the repo source (decisions, changelogs, code) for anything deeper. The task-lifecycle skill every managed agent already loads also gained a short paragraph on messaging another task's agent, so cross-task coordination is discoverable without asking for it.