Update 2.157

SGM native node: read/write the 861st node in the save + offset prover + RE Session 3

• RE proof (Session 3, FFX_SPHEREGRID_SAVE_ORCHESTRATOR_RE_2026-06-19.md) pins that A5BB70/A49590 are NodeCount-driven (no 860 clamp) and that node 860 lands at state[1720/1721] = save+10404/10405 (free band up to index 1279), persisting natively via the bulk memcpy — no sidecar for one extra node. New FfxSaveSphereGridRuntimeTable library (native map save+8684+2*idx, offset classifier) + CLI --spheregrid-extra-node-rt0 (node-860 round-trip with SG-region byte-identity) and --spheregrid-save-diff (empirical in-game offset prover). SphereGridFullGridCompilerHook v1.2 adds a read-only A45570 detour that logs menu+2/+4 (NodeCount/LinkCount) post-load + records 858..862 (FFFF=ghost), isolating the empty-grid cause (Square asset / magic check) and the L3 gate at A49590. Gates SGM-RT0-08/09 PASS (matrix 9/9). In-game render (enter/exit) and the native RT2 round-trip remain PENDING Halyson

v2.156.2.0