feat: intercept apply_patch for unified_exec (#7446)

codex-rs/core/src/util.rs

@@ -1,3 +1,5 @@
+use std::path::Path;
+use std::path::PathBuf;
 use std::time::Duration;
 
 use rand::Rng;
@@ -37,6 +39,14 @@ pub(crate) fn try_parse_error_message(text: &str) -> String {
     text.to_string()
 }
 
+pub fn resolve_path(base: &Path, path: &PathBuf) -> PathBuf {
+    if path.is_absolute() {
+        path.clone()
+    } else {
+        base.join(path)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;