cwicr-cost-calculator

# CWICR Cost Calculator ## Business Case ### Problem Statement Traditional cost estimation often produces "black box" estimates with hidden markups. Stakeholders need: - Transparent cost breakdowns - Traceable pricing logic - Auditable calculations - Resource-level detail ### Solution Resource-based cost calculation using CWICR methodology that separates physical norms (labor hours, material quantities) from volatile prices, enabling transparent and auditable estimates. ### Business Value - **Full transparency** - Every cost component visible - **Auditable** - Traceable calculation logic - **Flexible** - Update prices without changing norms - **Accurate** - Based on 55,000+ validated work items ## Technical Implementation ### Prerequisites ```bash pip install pandas numpy ``` ### Python Implementation ```python import pandas as pd import numpy as np from typing import Dict, Any, List, Optional, Tuple from dataclasses import dataclass, field from enum import Enum from datetime import datetime class CostComponent(Enum): """Cost breakdown components.""" LABOR = "labor" MATERIAL = "material" EQUIPMENT = "equipment" OVERHEAD = "overhead" PROFIT = "profit" TOTAL = "total" class CostStatus(Enum): """Cost calculation status.""" CALCULATED = "calculated" ESTIMATED = "estimated" MISSING_DATA = "missing_data" ERROR = "error" @dataclass class CostBreakdown: """Detailed cost breakdown for a work item.""" work_item_code:...