feat(proxy): fix thinking rectifiers and resolve clippy warnings (#1005)

* feat(proxy): align thinking rectifiers and resolve clippy warnings

- add thinking budget rectifier flow with single retry on anthropic budget errors

- align thinking signature rectification behavior with adaptive-safe handling

- expose requestThinkingBudget in settings/ui/i18n and default rectifier config to disabled

- fix clippy warnings in model_mapper format args and RectifierConfig default derive

* fix(proxy): thinking rectifiers

src/i18n/locales/en.json

@@ -214,7 +214,9 @@
         "requestGroup": "Request Rectification",
         "responseGroup": "Response Rectification",
         "thinkingSignature": "Thinking Signature Rectification",
-        "thinkingSignatureDescription": "Automatically fix Claude API errors caused by thinking signature validation failures"
+        "thinkingSignatureDescription": "When an Anthropic-type provider returns thinking signature incompatibility or illegal request errors, automatically removes incompatible thinking-related blocks and retries once with the same provider",
+        "thinkingBudget": "Thinking Budget Rectification",
+        "thinkingBudgetDescription": "When an Anthropic-type provider returns budget_tokens constraint errors (such as at least 1024), automatically normalizes thinking to enabled, sets thinking budget to 32000, and raises max_tokens to 64000 if needed, then retries once"
       },
       "logConfig": {
         "title": "Log Management",

src/i18n/locales/ja.json

@@ -214,7 +214,9 @@
         "requestGroup": "リクエスト整流",
         "responseGroup": "レスポンス整流",
         "thinkingSignature": "Thinking 署名整流",
-        "thinkingSignatureDescription": "Claude API の thinking 署名検証エラーを自動修正"
+        "thinkingSignatureDescription": "Anthropic タイプのプロバイダーが thinking 署名の非互換性や不正なリクエストエラーを返した場合、互換性のない thinking 関連ブロックを自動削除し、同じプロバイダーで 1 回リトライします",
+        "thinkingBudget": "Thinking Budget 整流",
+        "thinkingBudgetDescription": "Anthropic タイプのプロバイダーが budget_tokens 制約エラー（例: 1024 以上）を返した場合、thinking を enabled に正規化し、thinking 予算を 32000 に設定し、必要に応じて max_tokens を 64000 に引き上げて 1 回リトライします"
       },
       "logConfig": {
         "title": "ログ管理",

src/i18n/locales/zh.json

@@ -214,7 +214,9 @@
         "requestGroup": "请求整流",
         "responseGroup": "响应整流",
         "thinkingSignature": "Thinking 签名整流",
-        "thinkingSignatureDescription": "自动修复 Claude API 中因 thinking 签名校验失败导致的请求错误"
+        "thinkingSignatureDescription": "当 Anthropic 类型供应商返回 thinking 签名不兼容或非法请求等错误时，自动移除不兼容的 thinking 相关块并对同一供应商重试一次",
+        "thinkingBudget": "Thinking Budget 整流",
+        "thinkingBudgetDescription": "当 Anthropic 类型供应商返回 budget_tokens 约束错误（如至少 1024）时，自动将 thinking 规范为 enabled 并将 budget 设为 32000，同时在需要时将 max_tokens 设为 64000，然后重试一次"
       },
       "logConfig": {
         "title": "日志管理",