test: Revert broken env! macro for bin resolution

win-nvim/tests/integration_test.rs

@@ -44,9 +44,12 @@ fn read_message(stdout: &mut std::process::ChildStdout) -> Option<Value> {
 #[test]
 fn test_mcp_initialization_and_tools_list() {
     // Determine the path to the built binary.
-    let nvim_exe = env!("CARGO_BIN_EXE_mcp-memory-win-nvim");
+    let mut nvim_exe = std::env::current_exe().unwrap();
+    nvim_exe.pop();
+    nvim_exe.pop();
+    nvim_exe.push("mcp-memory-win-nvim.exe");
 
-    let mut child = Command::new(nvim_exe)
+    let mut child = Command::new(&nvim_exe)
         .stdin(Stdio::piped())
         .stdout(Stdio::piped())
         .stderr(Stdio::piped())