feat(analysis): add monthly variation table with inflation comparison

- New backend endpoint GET /api/quotes/monthly-last
- MonthlyVariationTable component with BELO/Blue/Oficial % changes
- Inflation data from ArgentinaDatos API with 24h cache
- Visual indicators: green if beats inflation, red if below
- Responsive: cards on mobile, table on desktop

apps/backend/src/modules/quotes/quotes.routes.ts

@@ -4,12 +4,14 @@ import { getCurrentQuotes } from "./handlers/getCurrentQuotes";
 import { getDailyMinMax } from "./handlers/getDailyMinMax";
 import { getDailyQuotes } from "./handlers/getDailyQuotes";
 import { getHistoricalMinMax } from "./handlers/getHistoricalMinMax";
+import { getMonthlyLast } from "./handlers/getMonthlyLast";
 import { getQuoteHistory } from "./handlers/getQuoteHistory";
 import { quoteEvents } from "./handlers/quoteEvents";
 
 const app = new Hono();
 
 app.get("/", getCurrentQuotes);
+app.get("/monthly-last", getMonthlyLast);
 app.get("/:type/history", getQuoteHistory);
 app.get("/:type/daily", getDailyQuotes);
 app.get("/:type/min-max", getDailyMinMax);