Ensure passing relative paths to CLI works

tests/integration.rs

@@ -237,6 +237,53 @@ fn blacklist_overlays_survive_tmp_bind() {
     );
 }
 
+#[test]
+fn relative_chdir_works() {
+    let output = sandbox(&["--chdir", "src"])
+        .args(["--", "bash", "-c", "pwd"])
+        .output()
+        .expect("agent-sandbox binary failed to execute");
+
+    assert!(
+        output.status.success(),
+        "relative --chdir should work, stderr: {}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+    let stdout = String::from_utf8_lossy(&output.stdout).trim().to_string();
+    assert!(
+        stdout.ends_with("/src"),
+        "expected cwd ending in /src, got: {stdout}"
+    );
+}
+
+#[test]
+fn relative_rw_path_works() {
+    let output = sandbox(&["--rw", "src"])
+        .args(["--", "bash", "-c", "echo ok"])
+        .output()
+        .expect("agent-sandbox binary failed to execute");
+
+    assert!(
+        output.status.success(),
+        "relative --rw should work, stderr: {}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+}
+
+#[test]
+fn relative_ro_path_works() {
+    let output = sandbox(&["--ro", "src"])
+        .args(["--", "bash", "-c", "echo ok"])
+        .output()
+        .expect("agent-sandbox binary failed to execute");
+
+    assert!(
+        output.status.success(),
+        "relative --ro should work, stderr: {}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+}
+
 #[test]
 fn rw_missing_path_errors() {
     let output = sandbox(&["--rw", "/nonexistent/xyz"])