houses: Leefbaarometer liveability per listing (PDOK geocode + LBM 2024 grid/buurt), min-score filter and sort; store every regional listing (no price caps at scrape time)

src/lib/house-tracker/liveability.test.ts

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+import { describe, expect, it } from 'vitest';
+import { gridCellId, lbmClassLabel, lbmDimensionLabel, lbmQuery } from './liveability';
+
+describe('leefbaarometer helpers', () => {
+	it('names the 100 m cell by its lower-left corner in hectometres', () => {
+		expect(gridCellId([106050.4, 446899.9])).toBe('E1060N4468');
+		expect(gridCellId([105866.161, 446838.902])).toBe('E1058N4468');
+	});
+	it('labels classes 1-9', () => {
+		expect(lbmClassLabel(1)).toBe('zeer onvoldoende');
+		expect(lbmClassLabel(9)).toBe('uitstekend');
+		expect(lbmClassLabel(0)).toBeNull();
+		expect(lbmDimensionLabel(5)).toBe('geen afwijking');
+	});
+	it('builds the geocode query from street, postcode and city', () => {
+		expect(lbmQuery({ street: 'Raam 12', postalCode: '2801 vk', city: 'Gouda' })).toBe(
+			'Raam 12 | 2801VK | Gouda'
+		);
+		expect(lbmQuery({ street: null, postalCode: null, city: 'Gouda' })).toBeNull();
+		expect(
+			lbmQuery({
+				street: null,
+				postalCode: null,
+				city: 'Gouda',
+				title: 'Turfmarkt 5',
+				source: 'manual'
+			})
+		).toBe('Turfmarkt 5 | Gouda');
+	});
+});