✅ Total memory < 200 MB (for typical React app)
✅ Heap size stable over 30+ minutes
✅ Memory recovers when idle (within 20% of baseline)
✅ Detached DOM < 1 MB
✅ GC reduces memory by 15-30% when triggered
✅ Tab suspension reclaims memory
✅ DevTools overhead ~25-30 MB (normal)
✅ No console errors about memory pressure

🚨 Investigate if:
❌ Heap doubles in 60 minutes
❌ Memory never recovers when idle
❌ Detached DOM > 5 MB and growing
❌ GC has minimal effect (< 5% reduction)
❌ Tab suspension doesn't help

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