chore: sync VERSION file with release v1.1.260 [skip ci]

Fix bedrock sse stream event

VERSION

@@ -1 +1 @@
-1.1.259
+1.1.260

src/routes/openaiRoutes.js

@@ -274,7 +274,9 @@ const handleResponses = async (req, res) => {
         'text_formatting',
         'truncation',
         'text',
-        'service_tier'
+        'service_tier',
+        'prompt_cache_retention',
+        'safety_identifier'
       ]
       fieldsToRemove.forEach((field) => {
         delete req.body[field]

src/services/bedrockRelayService.js

@@ -343,8 +343,8 @@ class BedrockRelayService {
             res.write(`event: ${claudeEvent.type}\n`)
             res.write(`data: ${JSON.stringify(claudeEvent.data)}\n\n`)
 
-            // 提取使用统计
+            // 提取使用统计 (usage is reported in message_delta per Claude API spec)
-            if (claudeEvent.type === 'message_stop' && claudeEvent.data.usage) {
+            if (claudeEvent.type === 'message_delta' && claudeEvent.data.usage) {
               totalUsage = claudeEvent.data.usage
             }
 
@@ -576,8 +576,10 @@ class BedrockRelayService {
       return {
         type: 'message_start',
         data: {
-          type: 'message',
+          type: 'message_start',
+          message: {
             id: `msg_${Date.now()}_bedrock`,
+            type: 'message',
             role: 'assistant',
             content: [],
             model: this.defaultModel,
@@ -587,21 +589,45 @@ class BedrockRelayService {
           }
         }
       }
+    }
+
+    if (bedrockChunk.type === 'content_block_start') {
+      return {
+        type: 'content_block_start',
+        data: {
+          type: 'content_block_start',
+          index: bedrockChunk.index || 0,
+          content_block: bedrockChunk.content_block || { type: 'text', text: '' }
+        }
+      }
+    }
 
     if (bedrockChunk.type === 'content_block_delta') {
       return {
         type: 'content_block_delta',
         data: {
+          type: 'content_block_delta',
           index: bedrockChunk.index || 0,
           delta: bedrockChunk.delta || {}
         }
       }
     }
 
+    if (bedrockChunk.type === 'content_block_stop') {
+      return {
+        type: 'content_block_stop',
+        data: {
+          type: 'content_block_stop',
+          index: bedrockChunk.index || 0
+        }
+      }
+    }
+
     if (bedrockChunk.type === 'message_delta') {
       return {
         type: 'message_delta',
         data: {
+          type: 'message_delta',
           delta: bedrockChunk.delta || {},
           usage: bedrockChunk.usage || {}
         }
@@ -612,7 +638,7 @@ class BedrockRelayService {
       return {
         type: 'message_stop',
         data: {
-          usage: bedrockChunk.usage || {}
+          type: 'message_stop'
         }
       }
     }

src/utils/oauthHelper.js

@@ -13,8 +13,8 @@ const OAUTH_CONFIG = {
   AUTHORIZE_URL: 'https://claude.ai/oauth/authorize',
   TOKEN_URL: 'https://console.anthropic.com/v1/oauth/token',
   CLIENT_ID: '9d1c250a-e61b-44d9-88ed-5944d1962f5e',
-  REDIRECT_URI: 'https://console.anthropic.com/oauth/code/callback',
+  REDIRECT_URI: 'https://platform.claude.com/oauth/code/callback',
-  SCOPES: 'org:create_api_key user:profile user:inference',
+  SCOPES: 'org:create_api_key user:profile user:inference user:sessions:claude_code',
   SCOPES_SETUP: 'user:inference' // Setup Token 只需要推理权限
 }
 
@@ -35,6 +35,7 @@ function generateState() {
 
 /**
  * 生成随机的 code verifier（PKCE）
+ * 符合 RFC 7636 标准：32字节随机数 → base64url编码 → 43字符
  * @returns {string} base64url 编码的随机字符串
  */
 function generateCodeVerifier() {