This skill should be used when the user asks to "implement stories", "work on PRD",
"autonomous coding", "overnight run", "implement features while I sleep", "AFK mode",
"hands-off development", "run unattended", "how does /go work", "batch development",
"iterate on stories", or discusses HITL vs AFK approaches. Covers the go loop
execution modes (HITL vs AFK), when to use each, and progression from cautious
to confident autonomous development.