refactor(open-sse): registry consolidation + DRY media/oauth/adhoc cleanup

- Single-source registry: oauth clientId/tokenUrl, usage URLs, image/embed
  configs, search defaultModel, codex fixedPort, google token url derive.
- Remove 29 unused OmniRoute providers (registry 100→71); media intact.
- De-adhoc: codex literals → registry format/oauth flags; reasoningInject,
  image/embed openrouter headers + xai bodyFields config-driven.
- Add REGISTRY_TEMPLATE.js + expand PROVIDER_DEFAULTS/schema JSDoc.
- Baselines updated; PROVIDERS 62 + alias 90 byte-for-byte, golden snapshots.

Co-authored-by: Cursor <cursoragent@cursor.com>

open-sse/services/usage.js

@@ -5,7 +5,11 @@
 import { CLIENT_METADATA, getPlatformUserAgent } from "../config/appConstants.js";
 import { proxyAwareFetch } from "../utils/proxyFetch.js";
 import { resolveDefaultProfileArn } from "../config/kiroConstants.js";
-import { ANTIGRAVITY_OAUTH_CLIENT } from "../providers/shared.js";
+import { ANTIGRAVITY_OAUTH_CLIENT, ANTHROPIC_API_VERSION } from "../providers/shared.js";
+import { PROVIDERS } from "../providers/index.js";
+
+// usage endpoints: single source from registry transport.usage
+const U = (id) => PROVIDERS[id]?.usage || {};
 
 // GitHub API config
 const GITHUB_CONFIG = {
@@ -13,49 +17,40 @@ const GITHUB_CONFIG = {
   userAgent: "GitHubCopilotChat/0.26.7",
 };
 
-// GLM quota endpoints (region-aware)
+// GLM quota endpoints (region-aware) — url from registry transport.usage
 const GLM_QUOTA_URLS = {
-  international: "https://api.z.ai/api/monitor/usage/quota/limit",
-  china: "https://open.bigmodel.cn/api/monitor/usage/quota/limit",
+  international: U("glm").url,
+  china: U("glm-cn").url,
 };
 
 // MiniMax usage endpoints (try in order, fallback on transient errors)
 const MINIMAX_USAGE_URLS = {
-  minimax: [
-    "https://www.minimax.io/v1/token_plan/remains",
-    "https://api.minimax.io/v1/api/openplatform/coding_plan/remains",
-  ],
-  "minimax-cn": [
-    "https://www.minimaxi.com/v1/api/openplatform/coding_plan/remains",
-    "https://api.minimaxi.com/v1/api/openplatform/coding_plan/remains",
-  ],
+  minimax: U("minimax").urls,
+  "minimax-cn": U("minimax-cn").urls,
 };
 
 // Vercel AI Gateway credits endpoint
 // Returns { balance: "95.50", total_used: "4.50" } (USD as decimal strings).
-// Docs: https://vercel.com/docs/ai-gateway/usage
-const VERCEL_AI_GATEWAY_CREDITS_URL = "https://ai-gateway.vercel.sh/v1/credits";
+const VERCEL_AI_GATEWAY_CREDITS_URL = U("vercel-ai-gateway").url;
 
-// Antigravity API config (from Quotio)
+// Antigravity API config (from Quotio) — urls from registry, oauth client + dynamic UA kept here
 const ANTIGRAVITY_CONFIG = {
-  quotaApiUrl: "https://cloudcode-pa.googleapis.com/v1internal:fetchAvailableModels",
-  loadProjectApiUrl: "https://cloudcode-pa.googleapis.com/v1internal:loadCodeAssist",
-  tokenUrl: "https://oauth2.googleapis.com/token",
+  ...U("antigravity"),
   ...ANTIGRAVITY_OAUTH_CLIENT,
   userAgent: getPlatformUserAgent(),
 };
 
 // Codex (OpenAI) API config
 const CODEX_CONFIG = {
-  usageUrl: "https://chatgpt.com/backend-api/wham/usage",
+  usageUrl: U("codex").url,
 };
 
-// Claude API config
+// Claude API config (urls from registry, apiVersion is header logic kept here)
 const CLAUDE_CONFIG = {
-  oauthUsageUrl: "https://api.anthropic.com/api/oauth/usage",
-  usageUrl: "https://api.anthropic.com/v1/organizations/{org_id}/usage",
-  settingsUrl: "https://api.anthropic.com/v1/settings",
-  apiVersion: "2023-06-01",
+  oauthUsageUrl: U("claude").oauthUrl,
+  usageUrl: U("claude").orgUrl,
+  settingsUrl: U("claude").settingsUrl,
+  apiVersion: ANTHROPIC_API_VERSION,
 };
 
 /**
@@ -139,7 +134,7 @@ async function getGitHubUsage(accessToken, providerSpecificData, proxyOptions =
     }
 
     // copilot_internal/user API requires GitHub OAuth token, not copilotToken
-    const response = await proxyAwareFetch("https://api.github.com/copilot_internal/user", {
+    const response = await proxyAwareFetch(U("github").url, {
       headers: {
         "Authorization": `token ${accessToken}`,
         "Accept": "application/json",
@@ -249,7 +244,7 @@ async function getGeminiUsage(accessToken, providerSpecificData, proxyOptions =
     let response;
     try {
       response = await proxyAwareFetch(
-        "https://cloudcode-pa.googleapis.com/v1internal:retrieveUserQuota",
+        U("gemini-cli").quotaUrl,
         {
           method: "POST",
           headers: {
@@ -313,7 +308,7 @@ async function getGeminiSubscriptionInfo(accessToken, proxyOptions = null) {
   const timeoutId = setTimeout(() => controller.abort(), 10000);
   try {
     const response = await proxyAwareFetch(
-      "https://cloudcode-pa.googleapis.com/v1internal:loadCodeAssist",
+      U("gemini-cli").loadCodeAssistUrl,
       {
         method: "POST",
         headers: {
@@ -765,7 +760,7 @@ async function getKiroUsage(accessToken, providerSpecificData, proxyOptions = nu
     {
       name: "codewhisperer-get",
       run: async () => proxyAwareFetch(
-        `https://codewhisperer.us-east-1.amazonaws.com/getUsageLimits?${getUsageParams.toString()}`,
+        `${U("kiro").cwHost}${U("kiro").limitsPath}?${getUsageParams.toString()}`,
         {
           method: "GET",
           headers: {
@@ -780,7 +775,7 @@ async function getKiroUsage(accessToken, providerSpecificData, proxyOptions = nu
     },
     {
       name: "codewhisperer-post",
-      run: async () => proxyAwareFetch("https://codewhisperer.us-east-1.amazonaws.com", {
+      run: async () => proxyAwareFetch(U("kiro").cwHost, {
         method: "POST",
         headers: {
           "Authorization": `Bearer ${accessToken}`,
@@ -803,7 +798,7 @@ async function getKiroUsage(accessToken, providerSpecificData, proxyOptions = nu
           profileArn,
           resourceType: "AGENTIC_REQUEST",
         });
-        return proxyAwareFetch(`https://q.us-east-1.amazonaws.com/getUsageLimits?${params}`, {
+        return proxyAwareFetch(`${U("kiro").qHost}${U("kiro").limitsPath}?${params}`, {
           method: "GET",
           headers: {
             "Authorization": `Bearer ${accessToken}`,
@@ -1289,7 +1284,7 @@ async function getQoderUsage(accessToken, proxyOptions = null) {
   }
   try {
     const response = await proxyAwareFetch(
-      "https://openapi.qoder.sh/api/v2/quota/usage",
+      U("qoder").url,
       {
         method: "GET",
         headers: {