feat: 添加Claude账户403错误处理和封禁状态支持

- 新增Claude账户403错误自动检测和处理机制
- 区分Claude账户401未授权和403封禁两种错误状态
- 支持非流式和流式请求中的401/403错误处理
- 优化Claude账户错误处理代码，减少重复逻辑
- 支持前端显示不同的Claude账户错误状态和颜色
- 完善Claude账户异常Webhook通知错误码区分

src/services/claudeRelayService.js

@@ -198,6 +198,13 @@ class ClaudeRelayService {
             )
           }
         }
+        // 检查是否为403状态码（禁止访问）
+        else if (response.statusCode === 403) {
+          logger.error(
+            `🚫 Forbidden error (403) detected for account ${accountId}, marking as blocked`
+          )
+          await unifiedClaudeScheduler.markAccountBlocked(accountId, accountType, sessionHash)
+        }
         // 检查是否为5xx状态码
         else if (response.statusCode >= 500 && response.statusCode < 600) {
           logger.warn(`🔥 Server error (${response.statusCode}) detected for account ${accountId}`)
@@ -953,8 +960,32 @@ class ClaudeRelayService {
         if (res.statusCode !== 200) {
           // 将错误处理逻辑封装在一个异步函数中
           const handleErrorResponse = async () => {
-            // 增加对5xx错误的处理
-            if (res.statusCode >= 500 && res.statusCode < 600) {
+            if (res.statusCode === 401) {
+              logger.warn(`🔐 [Stream] Unauthorized error (401) detected for account ${accountId}`)
+
+              await this.recordUnauthorizedError(accountId)
+
+              const errorCount = await this.getUnauthorizedErrorCount(accountId)
+              logger.info(
+                `🔐 [Stream] Account ${accountId} has ${errorCount} consecutive 401 errors in the last 5 minutes`
+              )
+
+              if (errorCount >= 1) {
+                logger.error(
+                  `❌ [Stream] Account ${accountId} encountered 401 error (${errorCount} errors), marking as unauthorized`
+                )
+                await unifiedClaudeScheduler.markAccountUnauthorized(
+                  accountId,
+                  accountType,
+                  sessionHash
+                )
+              }
+            } else if (res.statusCode === 403) {
+              logger.error(
+                `🚫 [Stream] Forbidden error (403) detected for account ${accountId}, marking as blocked`
+              )
+              await unifiedClaudeScheduler.markAccountBlocked(accountId, accountType, sessionHash)
+            } else if (res.statusCode >= 500 && res.statusCode < 600) {
               logger.warn(
                 `🔥 [Stream] Server error (${res.statusCode}) detected for account ${accountId}`
               )