vibe-how-do-we-do

Use canonical `vibe` as the only governed runtime authority for this request. Entry bias: - choose an approach - design execution structure - sequence the work before implementation - stop after canonical `xl_plan` Execution rules: - delegate to canonical `vibe` - keep `vibe` as the only runtime authority - do not create a second requirement surface - do not create a second plan surface - do not create a parallel runtime - do not continue into `plan_execute` or `phase_cleanup` unless the user explicitly re-enters through canonical `vibe` or another approved wrapper When this wrapper is chosen, enter canonical `vibe` with: - approach selection - explicit planning - stronger transition into `xl_plan` - a bounded terminal stage of `xl_plan` Request: $ARGUMENTS