✅ Fix 01_setup: Add test code between testing section and summary

Module 01_setup now follows correct pattern:
1. ## 🧪 Module Testing (explanation)
2. Standardized testing cell with run_module_tests_auto
3. Actual test functions (test_unit_personal_info_basic, test_unit_system_info_basic)
4. ## 🎯 Module Summary

This ensures students see actual test implementations before the summary.

modules/source/01_setup/setup_dev.py

@@ -554,6 +554,75 @@ if __name__ == "__main__":
     # Automatically discover and run all tests in this module
     success = run_module_tests_auto("Setup")
 
+# %%
+def test_unit_personal_info_basic():
+    """Test personal_info function implementation."""
+    print("🔬 Unit Test: Personal Information...")
+    
+    # Test personal_info function
+    personal = personal_info()
+    
+    # Test return type
+    assert isinstance(personal, dict), "personal_info should return a dictionary"
+    
+    # Test required keys
+    required_keys = ['developer', 'email', 'institution', 'system_name', 'version']
+    for key in required_keys:
+        assert key in personal, f"Dictionary should have '{key}' key"
+    
+    # Test non-empty values
+    for key, value in personal.items():
+        assert isinstance(value, str), f"Value for '{key}' should be a string"
+        assert len(value) > 0, f"Value for '{key}' cannot be empty"
+    
+    # Test email format
+    assert '@' in personal['email'], "Email should contain @ symbol"
+    assert '.' in personal['email'], "Email should contain domain"
+    
+    # Test version format
+    assert personal['version'] == '1.0.0', "Version should be '1.0.0'"
+    
+    # Test system name (should be unique/personalized)
+    assert len(personal['system_name']) > 5, "System name should be descriptive"
+    
+    print("✅ Personal info function tests passed!")
+    print(f"✅ TinyTorch configured for: {personal['developer']}")
+
+# %%
+def test_unit_system_info_basic():
+    """Test system_info function implementation."""
+    print("🔬 Unit Test: System Information...")
+    
+    # Test system_info function
+    sys_info = system_info()
+    
+    # Test return type
+    assert isinstance(sys_info, dict), "system_info should return a dictionary"
+    
+    # Test required keys
+    required_keys = ['python_version', 'platform', 'architecture', 'cpu_count', 'memory_gb']
+    for key in required_keys:
+        assert key in sys_info, f"Dictionary should have '{key}' key"
+    
+    # Test data types
+    assert isinstance(sys_info['python_version'], str), "python_version should be string"
+    assert isinstance(sys_info['platform'], str), "platform should be string"
+    assert isinstance(sys_info['architecture'], str), "architecture should be string"
+    assert isinstance(sys_info['cpu_count'], int), "cpu_count should be integer"
+    assert isinstance(sys_info['memory_gb'], (int, float)), "memory_gb should be number"
+    
+    # Test reasonable values
+    assert sys_info['cpu_count'] > 0, "CPU count should be positive"
+    assert sys_info['memory_gb'] > 0, "Memory should be positive"
+    assert len(sys_info['python_version']) > 0, "Python version should not be empty"
+    
+    # Test that values are actually queried (not hardcoded)
+    actual_version = f"{sys.version_info.major}.{sys.version_info.minor}.{sys.version_info.micro}"
+    assert sys_info['python_version'] == actual_version, "Python version should match actual system"
+    
+    print("✅ System info function tests passed!")
+    print(f"✅ Python: {sys_info['python_version']} on {sys_info['platform']}")
+
 # %% [markdown]
 """
 ## 🎯 Professional ML Engineering Skills