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Marks M3 historical writes SHIPPED + live-validated across the roadmap (R3.2/R3.3/one-glance), revision-write-path.md §"R3.1 CAPTURED", and the CLAUDE.md Required SDK Surface (the new write op, gRPC-only, AddStreamValues "ON" path, Float-only, distinct from the still-blocked AddS2 streaming path). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01B6mcaT2PjRFKcogzp9UkfC