stats: core-7 economy page with CPI index levels, rebase and categories

- /stats/economy defaults multi-country charts to CAN KOR CHN JPN USA NLD CUW,
  with add-a-country chips and an EU 27 comparison line
- CPI index levels rebased to a chosen base year, index/YoY toggle,
  categories (food, energy, housing, core) where the source has them
- new no-key collectors: oecd (CPI categories, 10y yields), statcan (CPI);
  bis WS_LONG_CPI, FRED US CPI categories, Eurostat prc_hicp_minr, WB FP.CPI.TOTL
- Canada added as a region; CBS Curacao fallbacks for growth/unemployment
- timers stats-oecd and stats-statcan

scripts/stats/eurostat.ts

@@ -87,7 +87,15 @@ export const EUROSTAT_DATASETS: Dataset[] = [
 		params: {},
 		geos: ['NL', 'DE', 'FR', 'IT', 'BE', 'ES', 'AT', 'EA']
 	},
-	{ code: 'prc_hicp_minr', theme: 'economy', params: { coicop18: 'TOTAL', unit: 'RCH_A' } },
+	{
+		// Rates for every geo; index levels (2015 = 100) and the main categories feed the CPI charts.
+		code: 'prc_hicp_minr',
+		theme: 'economy',
+		params: {
+			coicop18: ['TOTAL', 'CP01', 'CP04', 'NRG', 'TOT_X_NRG_FOOD'],
+			unit: ['RCH_A', 'I15']
+		}
+	},
 	{ code: 'prc_hicp_manr', theme: 'economy', params: { coicop: 'CP00', unit: 'RCH_A' } },
 	{ code: 'prc_hpi_q', theme: 'economy', params: { purchase: 'TOTAL', unit: ['I15_Q', 'RCH_A'] } },
 	{ code: 'road_eqr_carpda', theme: 'energy', params: { unit: 'NR' } },