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/providers/registry/codex.js

@@ -3,6 +3,23 @@ import { withCodexReviewModels } from "../models/helpers.js";
 export default {
   id: "codex",
   alias: "cx",
+  display: {
+      "name": "OpenAI Codex",
+      "icon": "code",
+      "color": "#3B82F6",
+      "website": "https://chatgpt.com/codex",
+      "notice": {
+          "signupUrl": "https://chatgpt.com/codex"
+      },
+      "deprecated": true,
+      "deprecationNotice": "RISK_NOTICE",
+      "kindNotice": {
+          "image": "Requires a ChatGPT Plus (or higher) account. Free accounts are not supported for image generation."
+      }
+  },
+  category: "oauth",
+  uiAlias: "cx",
+  thinkingConfig: {"options":["auto","none","low","medium","high"],"defaultMode":"auto"},
   transport: {
     baseUrl: "https://chatgpt.com/backend-api/codex/responses",
     format: "openai-responses",
@@ -11,8 +28,32 @@ export default {
       "originator": "codex_cli_rs",
       "User-Agent": "codex_cli_rs/0.136.0"
     },
+    usage: { url: "https://chatgpt.com/backend-api/wham/usage" }
+  },
+  oauth: {
     clientId: "app_EMoamEEZ73f0CkXaXp7hrann",
-    tokenUrl: "https://auth.openai.com/oauth/token"
+    authorizeUrl: "https://auth.openai.com/oauth/authorize",
+    tokenUrl: "https://auth.openai.com/oauth/token",
+    scope: "openid profile email offline_access",
+    codeChallengeMethod: "S256",
+    fixedPort: 1455,
+    callbackPath: "/auth/callback",
+    extraParams: {
+      id_token_add_organizations: "true",
+      codex_cli_simplified_flow: "true",
+      originator: "codex_cli_rs"
+    }
+  ,
+    refreshLeadMs: 432000000
+  ,
+    refresh: {"encoding":"form","scope":"openid profile email offline_access"}
+  ,
+    maxRefreshAgeMs: 691200000
+  ,
+    trackRefreshAt: true
+  },
+  media: {
+    serviceKinds: ["llm", "image"]
   },
   models: withCodexReviewModels([
     { id: "gpt-5.5", name: "GPT 5.5" },
@@ -27,5 +68,6 @@ export default {
     { id: "gpt-5.5-image", name: "GPT 5.5 Image", type: "image", capabilities: ["text2img", "edit"], params: ["size", "quality", "background", "image_detail", "output_format"] },
     { id: "gpt-5.4-image", name: "GPT 5.4 Image", type: "image", capabilities: ["text2img", "edit"], params: ["size", "quality", "background", "image_detail", "output_format"] },
     { id: "gpt-5.3-image", name: "GPT 5.3 Image", type: "image", capabilities: ["text2img", "edit"], params: ["size", "quality", "background", "image_detail", "output_format"] }
-  ])
+  ]),
+  features: {"usage":true},
 };