feat: add HEZ staking reward claim functionality

- Add staking-rewards.ts with unclaimed era detection and payoutStakers
- Show unclaimed rewards with per-era claim buttons in Scores tab
- Support batch claim via utility.batchAll
- Add translations for 6 languages

src/i18n/translations/ar.ts

@@ -161,6 +161,15 @@ const ar: Translations = {
     claimSuccess: 'تم المطالبة بالمكافأة بنجاح!',
     claimFailed: 'فشلت المطالبة بالمكافأة',
     noPezRewards: 'لا توجد مكافآت PEZ قابلة للمطالبة',
+    unclaimedRewards: 'المكافآت غير المطالب بها',
+    claimStakingReward: 'مطالبة',
+    claimAllStaking: 'مطالبة الكل',
+    claimingStakingReward: 'جارٍ المطالبة بمكافآت الستيكينغ...',
+    stakingClaimSuccess: 'تم المطالبة بمكافآت الستيكينغ!',
+    stakingClaimFailed: 'فشل المطالبة بمكافآت الستيكينغ',
+    noUnclaimedRewards: 'لا توجد مكافآت غير مطالب بها',
+    rewardHistory: 'سجل المكافآت',
+    era: 'حقبة',
   },
 
   wallet: {

src/i18n/translations/ckb.ts

@@ -162,6 +162,15 @@ const ckb: Translations = {
     claimSuccess: 'خەڵات بە سەرکەوتوویی داوا کرا!',
     claimFailed: 'داواکردنی خەڵات سەرنەکەوت',
     noPezRewards: 'خەڵاتی PEZ ی داواکراو نییە',
+    unclaimedRewards: 'خەڵاتە داوانەکراوەکان',
+    claimStakingReward: 'داواکردن',
+    claimAllStaking: 'هەموو داوابکە',
+    claimingStakingReward: 'خەڵاتەکانی ستەیکینگ داوادەکرێن...',
+    stakingClaimSuccess: 'خەڵاتەکانی ستەیکینگ داواکران!',
+    stakingClaimFailed: 'داواکردنی خەڵاتەکانی ستەیکینگ سەرکەوتوو نەبوو',
+    noUnclaimedRewards: 'خەڵاتی داوانەکراو نییە',
+    rewardHistory: 'مێژووی خەڵاتەکان',
+    era: 'سەردەم',
   },
 
   wallet: {

src/i18n/translations/en.ts

@@ -161,6 +161,15 @@ const en: Translations = {
     claimSuccess: 'Reward claimed successfully!',
     claimFailed: 'Failed to claim reward',
     noPezRewards: 'No claimable PEZ rewards',
+    unclaimedRewards: 'Unclaimed Rewards',
+    claimStakingReward: 'Claim',
+    claimAllStaking: 'Claim All',
+    claimingStakingReward: 'Claiming staking rewards...',
+    stakingClaimSuccess: 'Staking rewards claimed!',
+    stakingClaimFailed: 'Failed to claim staking rewards',
+    noUnclaimedRewards: 'No unclaimed rewards',
+    rewardHistory: 'Reward History',
+    era: 'Era',
   },
 
   wallet: {

src/i18n/translations/fa.ts

@@ -161,6 +161,15 @@ const fa: Translations = {
     claimSuccess: 'پاداش با موفقیت مطالبه شد!',
     claimFailed: 'مطالبه پاداش ناموفق بود',
     noPezRewards: 'پاداش PEZ قابل مطالبه‌ای وجود ندارد',
+    unclaimedRewards: 'پاداش‌های مطالبه نشده',
+    claimStakingReward: 'مطالبه',
+    claimAllStaking: 'مطالبه همه',
+    claimingStakingReward: 'در حال مطالبه پاداش‌های استیکینگ...',
+    stakingClaimSuccess: 'پاداش‌های استیکینگ مطالبه شد!',
+    stakingClaimFailed: 'مطالبه پاداش‌های استیکینگ ناموفق بود',
+    noUnclaimedRewards: 'پاداش مطالبه نشده‌ای وجود ندارد',
+    rewardHistory: 'تاریخچه پاداش‌ها',
+    era: 'دوره',
   },
 
   wallet: {

src/i18n/translations/krd.ts

@@ -166,6 +166,15 @@ const krd: Translations = {
     claimSuccess: 'Xelat bi serkeftin hat daxwazkirin!',
     claimFailed: 'Daxwazkirina xelatê biserneket',
     noPezRewards: 'Xelatên PEZ yên daxwazkir tune ne',
+    unclaimedRewards: 'Xelatên Nedaxwazkir',
+    claimStakingReward: 'Daxwaz bike',
+    claimAllStaking: 'Hemûyan Daxwaz Bike',
+    claimingStakingReward: 'Xelatên staking tên daxwazkirin...',
+    stakingClaimSuccess: 'Xelatên staking hatin daxwazkirin!',
+    stakingClaimFailed: 'Daxwazkirina xelatên staking bi ser neket',
+    noUnclaimedRewards: 'Xelatên nedaxwazkir tune ne',
+    rewardHistory: 'Dîroka Xelatan',
+    era: 'Era',
   },
 
   wallet: {

src/i18n/translations/tr.ts

@@ -161,6 +161,15 @@ const tr: Translations = {
     claimSuccess: 'Ödül başarıyla talep edildi!',
     claimFailed: 'Ödül talep edilemedi',
     noPezRewards: 'Talep edilebilir PEZ ödülü yok',
+    unclaimedRewards: 'Talep Edilmemiş Ödüller',
+    claimStakingReward: 'Talep Et',
+    claimAllStaking: 'Tümünü Talep Et',
+    claimingStakingReward: 'Staking ödülleri talep ediliyor...',
+    stakingClaimSuccess: 'Staking ödülleri talep edildi!',
+    stakingClaimFailed: 'Staking ödülleri talep edilemedi',
+    noUnclaimedRewards: 'Talep edilmemiş ödül yok',
+    rewardHistory: 'Ödül Geçmişi',
+    era: 'Era',
   },
 
   wallet: {

src/i18n/types.ts

@@ -163,6 +163,15 @@ export interface Translations {
     claimSuccess: string;
     claimFailed: string;
     noPezRewards: string;
+    unclaimedRewards: string;
+    claimStakingReward: string;
+    claimAllStaking: string;
+    claimingStakingReward: string;
+    stakingClaimSuccess: string;
+    stakingClaimFailed: string;
+    noUnclaimedRewards: string;
+    rewardHistory: string;
+    era: string;
   };
 
   // Wallet section