feat: 添加 LP 流动性池边界测试

新增 LP 边界测试功能:
- 添加流动性边界测试:
  - 添加金额为0 (InvalidAmount)
  - 添加超过代币余额 (InsufficientBalance)

- 移除流动性边界测试:
  - 移除金额为0 (InvalidAmount)
  - 移除超过ytLP余额 (InsufficientBalance)
  - 移除时minOut过高 (InsufficientOutput)

- 代币互换边界测试:
  - 互换金额为0 (InvalidAmount)
  - 相同代币互换 (SameToken)
  - 互换超过余额 (InsufficientBalance)

UI功能:
- 可折叠的边界测试区域
- 显示冷却时间和ytLP余额状态
- 中英文翻译支持

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/i18n/locales/en.json

@@ -178,6 +178,23 @@
     "swap": "Swap",
     "cooldownNotPassed": "Cooldown not passed, please try later",
     "insufficientOutput": "Insufficient output amount",
-    "cooldownWarning": "Cooldown remaining {{time}}, cannot remove liquidity yet"
+    "cooldownWarning": "Cooldown remaining {{time}}, cannot remove liquidity yet",
+    "boundaryHint": "These tests are designed to trigger LP contract errors. Expected errors are shown for each test.",
+    "testAddZero": "Add Liquidity Zero",
+    "testAddZeroDesc": "Test addLiquidity(token, 0, 0, 0)",
+    "testAddExceed": "Add Exceed Balance",
+    "testAddExceedDesc": "Add liquidity exceeding token balance",
+    "testRemoveZero": "Remove Liquidity Zero",
+    "testRemoveZeroDesc": "Test removeLiquidity(token, 0, 0, receiver)",
+    "testRemoveExceed": "Remove Exceed Balance",
+    "testRemoveExceedDesc": "Remove liquidity exceeding ytLP balance",
+    "testRemoveHighMinout": "Remove High MinOut",
+    "testRemoveHighMinoutDesc": "Set impossible minimum output amount",
+    "testSwapZero": "Swap Amount Zero",
+    "testSwapZeroDesc": "Test swapYT(tokenIn, tokenOut, 0, 0, receiver)",
+    "testSwapSame": "Swap Same Token",
+    "testSwapSameDesc": "Test swapYT(YT-A, YT-A, amount, 0, receiver)",
+    "testSwapExceed": "Swap Exceed Balance",
+    "testSwapExceedDesc": "Swap amount exceeding token balance"
   }
 }