feat: Add sal-net package to workspace

- Add new sal-net package to the workspace.
- Update MONOREPO_CONVERSION_PLAN.md to reflect the
  addition of the sal-net package and mark it as
  production-ready.
- Add Cargo.toml and README.md for the sal-net package.

net/tests/rhai/03_ssh_operations.rhai

@@ -0,0 +1,110 @@
+// SSH Operations Test Suite
+// Tests SSH connectivity functions through Rhai integration
+
+print("=== SSH Operations Test Suite ===");
+
+let test_count = 0;
+let passed_count = 0;
+
+// Test 1: SSH execute with invalid host
+test_count += 1;
+print(`\nTest ${test_count}: SSH execute with invalid host`);
+let exit_code = ssh_execute("nonexistent-host-12345.invalid", "testuser", "echo test");
+if exit_code != 0 {
+    print("  ✓ PASSED - SSH correctly failed for invalid host");
+    passed_count += 1;
+} else {
+    print("  ✗ FAILED - SSH should fail for invalid host");
+}
+
+// Test 2: SSH execute output with invalid host
+test_count += 1;
+print(`\nTest ${test_count}: SSH execute output with invalid host`);
+let output = ssh_execute_output("nonexistent-host-12345.invalid", "testuser", "echo test");
+// Output can be empty or contain error message, both are valid
+print("  ✓ PASSED - SSH execute output function works");
+passed_count += 1;
+
+// Test 3: SSH ping to invalid host
+test_count += 1;
+print(`\nTest ${test_count}: SSH ping to invalid host`);
+let result = ssh_ping("nonexistent-host-12345.invalid", "testuser");
+if !result {
+    print("  ✓ PASSED - SSH ping correctly failed for invalid host");
+    passed_count += 1;
+} else {
+    print("  ✗ FAILED - SSH ping should fail for invalid host");
+}
+
+// Test 4: SSH ping to localhost (may work or fail depending on SSH setup)
+test_count += 1;
+print(`\nTest ${test_count}: SSH ping to localhost`);
+let localhost_result = ssh_ping("localhost", "testuser");
+if localhost_result == true || localhost_result == false {
+    print("  ✓ PASSED - SSH ping function works (result depends on SSH setup)");
+    passed_count += 1;
+} else {
+    print("  ✗ FAILED - SSH ping should return boolean");
+}
+
+// Test 5: SSH execute with different commands
+test_count += 1;
+print(`\nTest ${test_count}: SSH execute with different commands`);
+let echo_result = ssh_execute("invalid-host", "user", "echo hello");
+let ls_result = ssh_execute("invalid-host", "user", "ls -la");
+let whoami_result = ssh_execute("invalid-host", "user", "whoami");
+
+if echo_result != 0 && ls_result != 0 && whoami_result != 0 {
+    print("  ✓ PASSED - All SSH commands correctly failed for invalid host");
+    passed_count += 1;
+} else {
+    print("  ✗ FAILED - SSH commands should fail for invalid host");
+}
+
+// Test 6: SSH error handling with malformed inputs
+test_count += 1;
+print(`\nTest ${test_count}: SSH error handling with malformed inputs`);
+let malformed_hosts = ["..invalid..", "host..name", ""];
+let all_failed = true;
+
+for host in malformed_hosts {
+    let result = ssh_ping(host, "testuser");
+    if result {
+        all_failed = false;
+        break;
+    }
+}
+
+if all_failed {
+    print("  ✓ PASSED - All malformed hosts correctly failed");
+    passed_count += 1;
+} else {
+    print("  ✗ FAILED - Malformed hosts should fail");
+}
+
+// Test 7: SSH function consistency
+test_count += 1;
+print(`\nTest ${test_count}: SSH function consistency`);
+let result1 = ssh_execute("invalid-host", "user", "echo test");
+let result2 = ssh_execute("invalid-host", "user", "echo test");
+if result1 == result2 {
+    print("  ✓ PASSED - SSH functions are consistent");
+    passed_count += 1;
+} else {
+    print("  ✗ FAILED - SSH functions should be consistent");
+}
+
+// Summary
+print("\n=== SSH Operations Test Results ===");
+print(`Total tests: ${test_count}`);
+print(`Passed: ${passed_count}`);
+print(`Failed: ${test_count - passed_count}`);
+
+if passed_count == test_count {
+    print("🎉 All SSH tests passed!");
+} else {
+    print("⚠️  Some SSH tests failed.");
+}
+
+// Return success if all tests passed
+passed_count == test_count