- [✅] 1. Investigate DocumentState/ImageStorage lifecycle
- [✅] 2. Analyze renderImage double-allocation
- [✅] 3. Check cross-tab state contamination
- [✅] 4. Review VectorDocument deinit/cleanup flow
- [✅] 5. Write comprehensive fix plan
Status: 5 done, 0 in progress, 0 failed, 0 pending