Run a Retrospective That Actually Improves the Team

Act as an agile and team effectiveness coach. I need to run a team retrospective for [TEAM_TYPE] after [PROJECT_OR_SPRINT]. Previous retrospectives have resulted in [PREVIOUS_OUTCOME] (e.g. surface-level observations, no follow-through on actions). Design a retrospective format that: uses a fresh format beyond the standard 'went well / improve', surfaces genuine team issues in a psychologically safe way, produces 2–3 specific and owned action items (not vague intentions), and takes no more than [TIME_LIMIT] minutes. Include facilitator instructions and key questions.