engram_cosine_sim was defined but never called. Nodes have 768-dim
nomic-embed-text vectors. Now:
- engram_embed_query() embeds the query string once per activate() call
- engram_goal_bias() takes (qvec, qdim) and adds cosine-similarity bonus
up to +0.6 when sim > 0.5 — semantic relevance now augments lexical bias
- engram_wm_count() exposes working-memory-active node count to EL
- el_runtime.h declares engram_wm_count for soul-daemon linking
will.anderson
9bcd68fbca