Handle Being Passed Over for a Promotion

Act as a career resilience and professional navigation coach. I was passed over for a promotion to [TARGET_ROLE] in favour of [COMPETITOR_DESCRIPTION]. I feel [EMOTIONAL_REACTION] and am considering [NEXT_OPTIONS] (e.g. staying, leaving, escalating). Help me: process this setback constructively without burning bridges, have a productive conversation with my manager to understand the real reasons, decide whether to stay and build toward the next opportunity or move on, design a 90-day plan to either accelerate my promotion readiness or manage a dignified exit, and identify the one question that will tell me whether staying is genuinely worth it.