merge: 合并远程 dev 分支，整合 CCR 和 OpenAI-Responses 功能

## 合并内容
- 成功合并远程 dev 分支的 CCR (Claude Connector) 功能
- 保留本地的 OpenAI-Responses 账户管理功能
- 解决所有合并冲突，保留双方功能

## UI 调整
- 将 CCR 平台归类到 Claude 分组中
- 保留新的平台分组选择器设计
- 支持所有平台类型：Claude、CCR、OpenAI、OpenAI-Responses、Gemini、Azure OpenAI、Bedrock

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

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

src/utils/modelHelper.js

@@ -0,0 +1,78 @@
+/**
+ * Model Helper Utility
+ *
+ * Provides utilities for parsing vendor-prefixed model names.
+ * Supports parsing model strings like "ccr,model_name" to extract vendor type and base model.
+ */
+
+/**
+ * Parse vendor-prefixed model string
+ * @param {string} modelStr - Model string, potentially with vendor prefix (e.g., "ccr,gemini-2.5-pro")
+ * @returns {{vendor: string|null, baseModel: string}} - Parsed vendor and base model
+ */
+function parseVendorPrefixedModel(modelStr) {
+  if (!modelStr || typeof modelStr !== 'string') {
+    return { vendor: null, baseModel: modelStr || '' }
+  }
+
+  // Trim whitespace and convert to lowercase for comparison
+  const trimmed = modelStr.trim()
+  const lowerTrimmed = trimmed.toLowerCase()
+
+  // Check for ccr prefix (case insensitive)
+  if (lowerTrimmed.startsWith('ccr,')) {
+    const parts = trimmed.split(',')
+    if (parts.length >= 2) {
+      // Extract base model (everything after the first comma, rejoined in case model name contains commas)
+      const baseModel = parts.slice(1).join(',').trim()
+      return {
+        vendor: 'ccr',
+        baseModel
+      }
+    }
+  }
+
+  // No recognized vendor prefix found
+  return {
+    vendor: null,
+    baseModel: trimmed
+  }
+}
+
+/**
+ * Check if a model string has a vendor prefix
+ * @param {string} modelStr - Model string to check
+ * @returns {boolean} - True if the model has a vendor prefix
+ */
+function hasVendorPrefix(modelStr) {
+  const { vendor } = parseVendorPrefixedModel(modelStr)
+  return vendor !== null
+}
+
+/**
+ * Get the effective model name for scheduling and processing
+ * This removes vendor prefixes to get the actual model name used for API calls
+ * @param {string} modelStr - Original model string
+ * @returns {string} - Effective model name without vendor prefix
+ */
+function getEffectiveModel(modelStr) {
+  const { baseModel } = parseVendorPrefixedModel(modelStr)
+  return baseModel
+}
+
+/**
+ * Get the vendor type from a model string
+ * @param {string} modelStr - Model string to parse
+ * @returns {string|null} - Vendor type ('ccr') or null if no prefix
+ */
+function getVendorType(modelStr) {
+  const { vendor } = parseVendorPrefixedModel(modelStr)
+  return vendor
+}
+
+module.exports = {
+  parseVendorPrefixedModel,
+  hasVendorPrefix,
+  getEffectiveModel,
+  getVendorType
+}