Failing tests first (2 red: relate! wrote no adjacency streams). Every edge write now maintains
per-pair event streams (rel:src|kind ← {:dst}, rin:dst|kind ← {:src}); host/blog-out/-in/--out-raw
(+ new --in-raw) fold ONLY the pair's stream — O(edges of that node under that kind) instead of
O(all kv keys) per read. Append-only ⇒ no read-modify-write race (duplicate :adds fold to a set).
The edge:* kv rows remain (whole-graph consumers: subtype-closure, relations admin block) and feed
host/blog-reindex-edges! — the idempotent boot migration serve.sh now runs, so pre-H7 live stores
read correctly. Collapsed host/blog--add-edge-kv! into add-edge! (the type-algebra conj/disj edges
were bypassing the streams — caught by the existing algebra tests going red).
blog suite 256/256 (+6); FULL conformance 658/658.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
giles
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