Fix financial export array binding and add SVG favicon

- Replace raw `ANY(${array})` SQL with drizzle's inArray() in
  src/lib/server/export/financial.ts; the raw form sent UUID arrays
  in a malformed Postgres array literal causing 500 on download
- Add static/favicon.svg (Thai baht symbol on blue square) and point
  app.html at it; remove the empty favicon.png
- Redirect /favicon.ico to /favicon.svg in hooks.server.ts so
  browsers' implicit fallback request stops 404'ing

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/hooks.server.ts

@@ -1,7 +1,12 @@
-import type { Handle } from '@sveltejs/kit';
+import { redirect, type Handle } from '@sveltejs/kit';
 import { validateSession, setSessionCookie } from '$lib/server/auth/index.js';
 
 export const handle: Handle = async ({ event, resolve }) => {
+	// Redirect implicit /favicon.ico requests to our SVG to avoid 404 noise
+	if (event.url.pathname === '/favicon.ico') {
+		redirect(302, '/favicon.svg');
+	}
+
 	const token = event.cookies.get('session');
 
 	if (token) {