cwicr-comparison-tool

# CWICR Comparison Tool ## Business Case ### Problem Statement Project stakeholders need to compare: - Alternative design options - Estimate versions over time - Projects against benchmarks - Actual vs estimated costs ### Solution Structured comparison of CWICR-based estimates with variance analysis, benchmarking, and visual reporting. ### Business Value - **Decision support** - Compare alternatives objectively - **Version control** - Track estimate evolution - **Benchmarking** - Compare against standards - **Audit** - Document estimate changes ## Technical Implementation ```python import pandas as pd import numpy as np from typing import Dict, Any, List, Optional, Tuple from dataclasses import dataclass, field from datetime import datetime from enum import Enum class ComparisonType(Enum): """Types of comparisons.""" VERSION = "version" # Same project, different versions ALTERNATIVE = "alternative" # Same project, design alternatives BENCHMARK = "benchmark" # Project vs standard/benchmark ACTUAL = "actual" # Estimate vs actual costs PROJECT = "project" # Different projects class VarianceSignificance(Enum): """Significance level of variance.""" CRITICAL = "critical" # >20% variance HIGH = "high" # 10-20% MEDIUM = "medium" # 5-10% LOW = "low" # <5% NONE = "none" # No variance @dataclass class ComparisonItem: """Single item comparison.""...