Squashed 'vendor/ruvector/' content from commit b64c2172

git-subtree-dir: vendor/ruvector
git-subtree-split: b64c21726f2bb37286d9ee36a7869fef60cc6900

examples/subpolynomial-time/src/fusion/mod.rs

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+//! Vector-Graph Fusion Module
+//!
+//! Unified retrieval substrate combining vector similarity and graph relations
+//! with minimum-cut brittleness detection for robust knowledge retrieval.
+
+mod fusion_graph;
+mod optimizer;
+mod structural_monitor;
+
+pub use fusion_graph::{
+    EdgeOrigin, FusionConfig, FusionEdge, FusionGraph, FusionNode, FusionResult, RelationType,
+};
+pub use optimizer::{
+    LearningGate, MaintenancePlan, MaintenanceTask, OptimizationResult, Optimizer, OptimizerAction,
+};
+pub use structural_monitor::{
+    BrittlenessSignal, MonitorConfig as StructuralMonitorConfig, MonitorState, StructuralMonitor,
+    Trigger, TriggerType,
+};