pull/push/sync loaded every artifact into memory before the first wire byte -- 3.7GB resident on a 148k-artifact store, OOM beyond it (#119). The client now sits on LogIndexStore as serve does: names, held/phantom, shun mask, and hash-policy off the frame index, content materialized per-rid on demand, received artifacts in the appendix. No-op pull on tk: 3.7GB -> 88MB, 64s -> 13s. check-in: 46d49702f7 user: dmestas tags: trunk