fix: replace emoji flags with SVG dropdown, complete Home's third row

Language switcher was two inline emoji-flag buttons -- emoji flag
rendering is inconsistent across OS/browsers (some render as two-letter
country codes instead of a flag). Replaced with hand-rolled inline SVG
flags (no new dependency for two locales) inside a proper dropdown
menu, trigger showing the current language's flag.

Also added a 9th Home highlight (personalized recommendations, same
copy already written for the Features page) so the lg:grid-cols-3
feature grid's last row has 3 items instead of 2.

v0.48.2

package.json

@@ -1,6 +1,6 @@
 {
   "name": "epicure",
-  "version": "0.48.1",
+  "version": "0.48.2",
   "private": true,
   "scripts": {
     "dev": "pnpm --filter web dev",