chore: add Biome for lint and fix all lint errors

- Install @biomejs/biome as devDependency at root
- Configure biome.json with 2-space indent, double quotes, Tailwind CSS support
- Add lint/lint:fix/format/format:fix scripts to root and app package.json
- Fix noNonNullAssertion: env vars extracted to variables with suppression, <div role=button> replaced with <button>
- Fix noUnusedVariables: remove unused destructured vars
- Fix useIterableCallbackReturn: arrow functions with block body
- Fix noExplicitAny: recharts Tooltip formatters
- Fix noLabelWithoutControl: add htmlFor+id or use <span> for non-input labels
- Fix noStaticElementInteractions/useKeyWithClickEvents: role+keyboard events for overlays
- Fix noArrayIndexKey: use error string as key
- Fix CSS parse: enable tailwindDirectives parser
- Normalize formatting across 80 files with biome check --write

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

@@ -1,10 +1,10 @@
 import { Hono } from "hono";
-import { getCurrentQuotes } from "./handlers/getCurrentQuotes";
 import { fetchQuotes } from "./handlers/fetchQuotes";
-import { getQuoteHistory } from "./handlers/getQuoteHistory";
-import { getDailyQuotes } from "./handlers/getDailyQuotes";
+import { getCurrentQuotes } from "./handlers/getCurrentQuotes";
 import { getDailyMinMax } from "./handlers/getDailyMinMax";
+import { getDailyQuotes } from "./handlers/getDailyQuotes";
 import { getHistoricalMinMax } from "./handlers/getHistoricalMinMax";
+import { getQuoteHistory } from "./handlers/getQuoteHistory";
 import { quoteEvents } from "./handlers/quoteEvents";
 
 const app = new Hono();