Variable DEFAULT_EDGE_MULTIPLIERSConst

Per-edge-kind activation multipliers μ(ℓ) from Hindsight §2.4.1.

• entity: 1.0 (the strongest link, bidirectional shared-entity)
• causal: 1.0 (LLM-extracted reasoning chain — high signal)
• temporal: 0.7 (loose proximity in time)
• semantic: 0.6 (cosine ≥ θs threshold; treat as supporting, not primary, since the embedding path also runs separately at the four-way RRF fusion)

These default values are tunable per-deployment; pass an override map via TypedSpreadingActivationOptions.edgeMultipliers.