fix(providers): remove Qwen provider support

Qwen OAuth flow (portal.qwen.ai) stopped working reliably; drop the
executor, registry entry, OAuth provider/service, token refresh
profile, usage handler, and related test coverage and baselines.

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

@@ -79,18 +79,6 @@ const createOpenAIModelsConfig = (url) => ({
   parseResponse: parseOpenAIStyleModels
 });
 
-const resolveQwenModelsUrl = (connection) => {
-  const fallback = "https://portal.qwen.ai/v1/models";
-  const raw = connection?.providerSpecificData?.resourceUrl;
-  if (!raw || typeof raw !== "string") return fallback;
-  const value = raw.trim();
-  if (!value) return fallback;
-  if (value.startsWith("http://") || value.startsWith("https://")) {
-    return `${value.replace(/\/$/, "")}/models`;
-  }
-  return `https://${value.replace(/\/$/, "")}/v1/models`;
-};
-
 const getStaticProviderModels = (providerId) =>
   getModelsByProviderId(providerId).map((model) => ({
     ...model,
@@ -156,14 +144,6 @@ const PROVIDER_MODELS_CONFIG = {
     authQuery: "key", // Use query param for API key
     parseResponse: (data) => data.models || []
   },
-  qwen: {
-    url: "https://portal.qwen.ai/v1/models",
-    method: "GET",
-    headers: { "Content-Type": "application/json" },
-    authHeader: "Authorization",
-    authPrefix: "Bearer ",
-    parseResponse: (data) => data.data || []
-  },
   codex: {
     customResolver: buildOAuthResolver({
       refreshFn: (conn) => refreshCodexToken(conn.refreshToken),
@@ -572,9 +552,6 @@ export async function GET(request, { params }) {
 
     // Build request URL
     let url = config.url;
-    if (connection.provider === "qwen") {
-      url = resolveQwenModelsUrl(connection);
-    }
     if (config.authQuery) {
       url += `?${config.authQuery}=${token}`;
     }

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

@@ -12,7 +12,6 @@ import {
   GEMINI_CONFIG,
   ANTIGRAVITY_CONFIG,
   KIRO_CONFIG,
-  QWEN_CONFIG,
   CLAUDE_CONFIG,
   CLINE_CONFIG,
   KILOCODE_CONFIG,
@@ -62,7 +61,6 @@ const OAUTH_TEST_CONFIG = {
     method: "GET",
     noAuth: true,
   },
-  qwen: { checkExpiry: true, refreshable: true },
   kiro: { checkExpiry: true, refreshable: true },
   qoder: {
     // Test by hitting Qoder's userinfo endpoint with the device token.
@@ -285,21 +283,6 @@ async function refreshOAuthToken(connection) {
       return { accessToken: data.accessToken, expiresIn: data.expiresIn || 3600, refreshToken: data.refreshToken || refreshToken };
     }
 
-    if (provider === "qwen") {
-      const response = await fetch(QWEN_CONFIG.tokenUrl, {
-        method: "POST",
-        headers: { "Content-Type": "application/x-www-form-urlencoded", "Accept": "application/json" },
-        body: new URLSearchParams({
-          grant_type: "refresh_token",
-          refresh_token: refreshToken,
-          client_id: QWEN_CONFIG.clientId,
-        }),
-      });
-      if (!response.ok) return null;
-      const data = await response.json();
-      return { accessToken: data.access_token, expiresIn: data.expires_in, refreshToken: data.refresh_token || refreshToken };
-    }
-
     if (provider === "cline") {
       const response = await fetch(CLINE_CONFIG.refreshUrl, {
         method: "POST",