feat: add version flag and release script for codex_export_bindings

Add -v flag support to display binary version and create release script for distributing codex_export_bindings to cargo bin directory.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Haiku 4.5 <[email protected]>

Author: milisp

codex-bindings/src/bin/codex_export_bindings.rs

@@ -4,6 +4,11 @@ use std::path::PathBuf;
 fn main() {
     let args: Vec<String> = env::args().collect();
 
+    if args.len() > 1 && args[1] == "-v" {
+        println!("{}", env!("CARGO_PKG_VERSION"));
+        return;
+    }
+
     let out = if args.len() > 1 {
         Some(PathBuf::from(&args[1]))
     } else {

scripts/release_codex_bindings.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -euo pipefail
+
+VERSION=$(grep -A 1 '\[workspace.package\]' Cargo.toml | grep version | sed 's/.*"\([^"]*\)".*/\1/')
+cargo build -p codex-bindings --bin codex_export_bindings --release
+
+BINARY_PATH="target/release/codex_export_bindings"
+CARGO_BIN_DIR="${CARGO_HOME:-$HOME/.cargo}/bin"
+
+if [ -f "$BINARY_PATH" ]; then
+    mkdir -p "$CARGO_BIN_DIR"
+    cp "$BINARY_PATH" "$CARGO_BIN_DIR/"
+    chmod +x "$CARGO_BIN_DIR/codex_export_bindings"
+    echo "Released codex_export_bindings v$VERSION to $CARGO_BIN_DIR"
+else
+    echo "Error: Binary not found at $BINARY_PATH"
+    exit 1
+fi