v1.3.1: Fix Sum operations parentheses and wrapped value definitions

🚀 What's New in v1.3.1

🔧 Bug Fixes

Sum Operations Parentheses

• Fixed missing parentheses for Sum operations when used in multiplication/division contexts
• Sum operations now properly wrapped with parentheses for mathematical clarity
• Example: (Sum(items)) × multiplier instead of Sum(items) × multiplier

Wrapped Value Definitions in FinalCalculationSteps

• Enhanced calculation step display to include wrapped value definitions when used in complex expressions
• Intelligent complexity detection determines when to show multi-line format
• Wrapped values now properly show their definitions in calculation steps

🧪 Test Results

• Fixed 7 originally failing tests related to missing parentheses and definitions
• Resolved 2 additional side-effect failures from over-aggressive formatting
• All 168 tests now passing ✅

🔧 Technical Changes

Core Improvements

• FormatOperand method: Enhanced Sum operation detection and parentheses logic
• FinalCalculationSteps property: Improved wrapped value definition inclusion
• CountOperators helper: New method for expression complexity analysis

Code Examples

Sum Parentheses Detection:

// Only add parentheses for actual Sum operations, not multiplications containing sums
var isTopLevelSum = operand._caption.StartsWith("Sum(") || 
                   (operand._caption.Contains(" + ") && 
                    \!operand._caption.Contains(" × ") && 
                    \!operand._caption.Contains(" ÷ "));

Wrapped Value Multi-line Logic:

// Only show multi-line format for multiplication expressions with wrapped values
var operatorCount = CountOperators(_caption);
var isSimpleMultiplication = operatorCount == 1 && _caption.Contains(" × ") && 
                            _caption.Contains(wrappedName + "[");
shouldShowMultiLine = hasComplexDefinition && isSimpleMultiplication;

📁 Files Modified

• HumanReadableCalculationSteps/ValueWithCaption.cs - Core formatting logic
• Test files - Updated expectations for improved formatting behavior

🔗 Related

• Closes #34
• PR #35

🤝 Contributors

This release includes improvements to mathematical notation accuracy and calculation step visibility, ensuring better user experience when working with complex expressions.

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Full Changelog: v1.3.0...v1.3.1