Revert "Merge pull request 'Merge all 5 batch PRs: security, CLI features, protocol, performance, tests/docs' (#143) from merge-all-v2 into main"

This reverts commit 29f4f8cde6, reversing
changes made to c6bf7bb84e.

tests/test_transport_ssh.c

@@ -1,14 +1,20 @@
 #include "test_transport_ssh.h"
-#include "test_utils.h"
 #include "transport_ssh.h"
+#include "test_utils.h"
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/wait.h>
 
-static void test_ssh_connect_invalid_dest_no_colon() {
+/* Test client_connect_ssh with invalid destination (missing colon) */
+static void test_ssh_connect_invalid_dest() {
+  /* Missing colon — parse_remote_dest should fail and return NULL */
   /* cppcheck-suppress constVariablePointer */
   Client* client = client_connect_ssh("invalid-destination-no-colon", 22, NULL);
   EXPECT_NULL(client);
 }
 
-static void test_ssh_connect_invalid_dest_empty() {
+/* Test client_connect_ssh with empty destination */
+static void test_ssh_connect_empty_dest() {
   /* cppcheck-suppress constVariablePointer */
   Client* client = client_connect_ssh("", 22, NULL);
   EXPECT_NULL(client);
@@ -40,6 +46,8 @@ static void test_ssh_connect_unreachable() {
 }
 
 void test_transport_ssh() {
-  test_ssh_connect_invalid_dest_no_colon();
-  test_ssh_connect_invalid_dest_empty();
+  test_ssh_connect_invalid_dest();
+  test_ssh_connect_empty_dest();
+  test_ssh_connect_malformed();
+  test_ssh_connect_unreachable();
 }