refactor: 重构奖池配置页面，移除冗余组件，优化加载体验与国际化支持

src/i18n/locales/en/jackpot.json

@@ -1,6 +1,10 @@
 {
   "title": "Jackpot",
   "configTitle": "Jackpot pool configuration",
+  "pageDescription": "Maintain per-currency pool parameters; contribution and payout logs are below.",
+  "poolsSectionDescription": "Contribution rate, burst threshold, switch, and manual burst.",
+  "recordsSectionTitle": "Contribution & payout logs",
+  "recordsSectionDescription": "Filter payout and contribution entries (read-only).",
   "loadFailed": "Failed to load",
   "saveSuccess": "Saved",
   "saveFailed": "Save failed",
@@ -35,9 +39,7 @@
     "title": "Jackpot records",
     "description": "Payout records and pool contribution flows"
   },
-  "subnavLabel": "Jackpot sub navigation",
-  "subnavPools": "Pool configuration",
-  "subnavRecords": "Records",
+  "poolsSectionTitle": "Per-currency pool parameters",
   "payoutLoadFailed": "Failed to load payout records",
   "contributionLoadFailed": "Failed to load contribution records",
   "trigger": "Trigger",