A 26-year-old female presents with facial pallor, fatigue, and purpura for one year. Physical examination shows mild icterus of the sclera. Lab results: Hb 60g/L, RBC 1.8×10⁹/L, WBC 4.6×10⁹/L, PLT 36×10⁹/L. Coombs test (+), Rous test (-). Bone marrow shows marked hyperplasia with normal myeloid series distribution. Erythroid series accounts for 0.32, with prominent dysmorphic mature RBCs (spherocytes and teardrop cells). Megakaryocytes: 96 (92% granular, 8% naked nuclei; no platelet-producing forms). The most likely diagnosis is: