Squashed 'vendor/ruvector/' content from commit b64c2172

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

crates/rvf/rvf-wire/README.md

@@ -0,0 +1,30 @@
+# rvf-wire
+
+Zero-copy wire format reader and writer for RuVector Format (RVF) segments.
+
+## Overview
+
+`rvf-wire` handles serialization and deserialization of RVF binary segments:
+
+- **Writer** -- append segments with automatic CRC32c and XXH3 checksums
+- **Reader** -- stream-parse segments with validation and integrity checks
+- **Zero-copy** -- borrows directly from memory-mapped buffers where possible
+
+## Usage
+
+```toml
+[dependencies]
+rvf-wire = "0.1"
+```
+
+```rust
+use rvf_wire::{SegmentWriter, SegmentReader};
+```
+
+## Features
+
+- `std` (default) -- enable `std` I/O support
+
+## License
+
+MIT OR Apache-2.0