Run the debug CLI without Cargo loader paths

- Add the Rust target library directory to the Linux debug CLI rpath
- Test that the built CLI runs without `LD_LIBRARY_PATH`

crates/bds-cli/tests/process.rs

@@ -8,6 +8,23 @@ fn cli(home: &std::path::Path, args: &[&str]) -> std::process::Output {
         .unwrap()
 }
 
+#[cfg(target_os = "linux")]
+#[test]
+fn built_cli_runs_without_cargo_loader_paths() {
+    let output = Command::new(env!("CARGO_BIN_EXE_bds-cli"))
+        .env_remove("LD_LIBRARY_PATH")
+        .arg("--help")
+        .output()
+        .unwrap();
+
+    assert!(
+        output.status.success(),
+        "{}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+    assert!(String::from_utf8_lossy(&output.stdout).contains("rebuild"));
+}
+
 #[test]
 fn process_exit_codes_help_and_shared_state_roundtrip() {
     let root = tempfile::tempdir().unwrap();