feat: simplify Be Citizen flow - remove wallet steps, add seed phrase input

- Remove wallet setup/create/import/connect steps from CitizenPage
- Add privacy notice banner with Shield icon to form
- Add seed phrase textarea with mnemonic validation
- CitizenProcessing creates keypair directly from seed phrase
- CitizenSuccess shows 3-step next process info
- Add /citizens path support alongside ?page=citizen
- Update bot URL to /citizens
- Add 10 new i18n keys in all 6 languages

supabase/functions/telegram-bot/index.ts

@@ -174,7 +174,7 @@ async function sendKrdWelcome(token: string, chatId: number) {
       [
         {
           text: '🏛️ Be Citizen / Bibe Welatî',
-          web_app: { url: `${appUrl}?page=citizen` },
+          web_app: { url: `${appUrl}/citizens` },
         },
       ],
     ],