Merge commit 'd803bfe2b1fe7f5e219e50ac20d6801a0a58ac75' as 'vendor/ruvector'

vendor/ruvector/crates/ruvector-coherence/src/lib.rs

@@ -0,0 +1,27 @@
+//! Coherence measurement proxies for comparing attention mechanisms.
+//!
+//! This crate provides metrics, comparison utilities, quality guardrails,
+//! and batched evaluation tools for measuring how different attention
+//! mechanisms (e.g., baseline vs. gated) affect output coherence.
+
+pub mod batch;
+pub mod comparison;
+pub mod metrics;
+pub mod quality;
+
+#[cfg(feature = "spectral")]
+pub mod spectral;
+
+pub use batch::{evaluate_batch, BatchResult};
+pub use comparison::{
+    compare_attention_masks, edge_flip_count, jaccard_similarity, ComparisonResult,
+};
+pub use metrics::{contradiction_rate, delta_behavior, entailment_consistency, DeltaMetric};
+pub use quality::{cosine_similarity, l2_distance, quality_check, QualityResult};
+
+#[cfg(feature = "spectral")]
+pub use spectral::{
+    compute_degree_regularity, estimate_effective_resistance_sampled, estimate_fiedler,
+    estimate_largest_eigenvalue, estimate_spectral_gap, CsrMatrixView, HealthAlert,
+    HnswHealthMonitor, SpectralCoherenceScore, SpectralConfig, SpectralTracker,
+};