Merge commit 'd803bfe2b1fe7f5e219e50ac20d6801a0a58ac75' as 'vendor/ruvector'

vendor/ruvector/examples/rvf/src/lib.rs

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+//! RVF examples crate.
+//!
+//! This crate contains example binaries demonstrating usage of the RVF
+//! (RuVector Format) crates. Run individual examples with:
+//!
+//! ```bash
+//! cargo run --example basic_store
+//! cargo run --example progressive_index
+//! cargo run --example quantization
+//! cargo run --example wire_format
+//! cargo run --example crypto_signing
+//! cargo run --example filtered_search
+//! ```
+//!
+//! Solver integration examples (sublinear solver + RVF):
+//!
+//! ```bash
+//! cargo run --example solver_witness        # convergence witness chains
+//! cargo run --example sparse_matrix_store   # CSR sparse matrix storage
+//! cargo run --example solver_benchmark      # benchmark result analysis
+//! ```