Function buildImpactMatrix

buildImpactMatrix(data: ClassificationInput): PoliticalImpactAssessment
Build a multi-dimensional Political Impact Assessment Matrix.

Inspired by the ISMS Business Impact Analysis Matrix, this function evaluates five political dimensions independently and then derives an overall significance from the aggregate impact weight.
Parameters
- data: ClassificationInput
  Parliamentary data from any article type
Returns PoliticalImpactAssessment
Multi-dimensional impact assessment with overall significance
Example
```
const matrix = buildImpactMatrix({ votingRecords: [...], coalitions: [...] });
console.log(matrix.legislativeImpact); // 'high'
```
- Defined in utils/political-classification.ts:281