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…lution (#2167, #2163) Hybrid seed selection (#2167): - Replace flat FTS5 match with hybrid score: fts * 0.6 + structural * 0.4 - Structural score combines normalized entity degree and edge-type diversity - Embedding fallback when FTS5 returns 0 results (WAL cross-session gap fix) - Community-aware seed capping with SA-INV-10 zero-out guard - New config: memory.synapse.seed_structural_weight, seed_community_cap A-MEM evolving link weights (#2163): - Migration 043: add retrieval_count, last_retrieved_at to graph_edges - evolved_weight() = confidence * (1 + 0.2 * ln(1 + count)) capped at 1.0 - Fire-and-forget retrieval tracking after SYNAPSE spread and BFS recall - Time-based multiplicative decay independent of graph eviction cycle - New config: memory.graph.link_weight_decay_lambda, link_weight_decay_interval_secs - Serde validation for link_weight_decay_lambda (must be in (0.0, 1.0]) - SQLite bind-limit chunking in entity_structural_scores and entity_community_ids Adds 16 unit tests; all 6525 tests pass.
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Summary
retrieval_count/last_retrieved_aton edges,evolved_weight()with 0.2 dampening, time-based multiplicative decay independent of eviction cycleChanges
migrations/043_graph_edge_retrieval.sql— additive schema:retrieval_count,last_retrieved_atongraph_edgesgraph/types.rs—evolved_weight(),ScoredEntity,retrieval_countinEdge/GraphFactgraph/store/mod.rs—find_entities_ranked(),entity_structural_scores(),entity_community_ids(),record_edge_retrieval(),decay_edge_retrieval_counts(); chunking at 163/490 for SQLite bind limitgraph/retrieval.rs— hybrid seed selection pipeline with SA-INV-10 guard, embedding fallbackgraph/activation.rs— spread usesevolved_weight()instead of raw confidencesemantic/graph.rs— time-based decay block in community task viagraph_metadatatimestampzeph-config/src/memory.rs— new fields:seed_structural_weight,seed_community_cap,link_weight_decay_lambda(with serde validation),link_weight_decay_interval_secsTest Plan
evolved_weightidentity/growth, retrieval tracking, decay, BFS weight factorcargo nextest run --workspace --features full --lib --bins)cargo +nightly fmt --checkcleanCloses #2167
Closes #2163