fix(alicode-intl): split into Coding Plan + Model Studio providers

8b9cac1 swapped alicode-intl to the DashScope compatible-mode endpoint to
fix #2591 for standard DashScope keys, but that broke Coding Plan keys
(sk-sp-...) which only work on coding-intl.dashscope.aliyuncs.com. The two
key types use two different hosts and are not interchangeable.

- alicode-intl: revert to coding-intl endpoint (Coding Plan keys)
- alims-intl: new provider for dashscope-intl/compatible-mode (standard keys)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/app/api/providers/[id]/models/route.js

@@ -229,6 +229,14 @@ const PROVIDER_MODELS_CONFIG = {
     authPrefix: "Bearer ",
     parseResponse: (data) => data.data || []
   },
+  "alims-intl": {
+    url: "https://dashscope-intl.aliyuncs.com/compatible-mode/v1/models",
+    method: "GET",
+    headers: { "Content-Type": "application/json" },
+    authHeader: "Authorization",
+    authPrefix: "Bearer ",
+    parseResponse: (data) => data.data || []
+  },
   "volcengine-ark": createOpenAIModelsConfig("https://ark.cn-beijing.volces.com/api/coding/v3/models"),
   byteplus: createOpenAIModelsConfig("https://ark.ap-southeast.bytepluses.com/api/coding/v3/models"),
 

src/app/api/providers/[id]/test/testUtils.js

@@ -620,10 +620,13 @@ async function testApiKeyConnection(connection, effectiveProxy = null) {
         return { valid, error: valid ? null : "Invalid API key" };
       }
       case "alicode":
-      case "alicode-intl": {
-        // Aliyun Coding Plan uses OpenAI-compatible API
+      case "alicode-intl":
+      case "alims-intl": {
+        // Aliyun Coding Plan uses OpenAI-compatible API; alims-intl uses Model Studio compatible-mode
         const aliBaseUrl = connection.provider === "alicode-intl"
           ? "https://coding-intl.dashscope.aliyuncs.com/v1/chat/completions"
+          : connection.provider === "alims-intl"
+          ? "https://dashscope-intl.aliyuncs.com/compatible-mode/v1/chat/completions"
           : "https://coding.dashscope.aliyuncs.com/v1/chat/completions";
         const res = await fetchWithConnectionProxy(aliBaseUrl, {
           method: "POST",

src/app/api/providers/validate/route.js

@@ -301,11 +301,12 @@ export async function POST(request) {
         case "minimax":
         case "minimax-cn":
         case "alicode-intl":
+        case "alims-intl":
         case "alicode":
         case "agentrouter": {
           // Use baseUrl from PROVIDERS (DRY); separate openai-format vs claude-format flow
           const cfg = PROVIDERS[provider];
-          const isOpenAiFormat = provider === "glm-cn" || provider === "alicode" || provider === "alicode-intl";
+          const isOpenAiFormat = provider === "glm-cn" || provider === "alicode" || provider === "alicode-intl" || provider === "alims-intl";
 
           if (isOpenAiFormat) {
             const testModel = getDefaultModel(provider);