AhpLocalDatasourceImpl class

Implementation of AhpLocalDatasource that handles AHP algorithm operations.

This implementation supports:

• Automatic ID generation for all entities
• Isolate-based processing for large datasets (>15 criteria or alternatives)
• Performance profiling for optimization
• Comprehensive validation and error handling
• Consistency ratio checking for result validation

AHP Process Flow:

1. Identification → validates and assigns IDs
2. Generate Hierarchy → creates decision structure
3. Generate Pairwise Inputs → creates comparison templates
4. User fills in comparisons (external to this class)
5. Calculate Final Score → computes results

Example usage:

final datasource = AhpLocalDatasourceImpl();

// Step 1: Identify
final identification = await datasource.identification(criteria, alternatives);

// Step 2: Generate hierarchy
final hierarchy = await datasource.generateHierarchy(
  identification.criteria,
  identification.alternative,
);

// Step 3: Generate comparison templates
final criteriaInputs = await datasource.generatePairwiseCriteria(
  identification.criteria,
);
final alternativeInputs = await datasource.generatePairwiseAlternative(hierarchy);

// Step 4: User fills in comparisons (your UI logic here)

// Step 5: Calculate results
final result = await datasource.calculateFinalScore(
  hierarchy,
  criteriaInputs,
  alternativeInputs,
);