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/glm.js

@@ -3,16 +3,30 @@ import { CLAUDE_API_HEADERS } from "../shared.js";
 export default {
   id: "glm",
   alias: "glm",
+  display: {
+    "name": "GLM Coding",
+    "icon": "code",
+    "color": "#2563EB",
+    "textIcon": "GL",
+    "website": "https://open.bigmodel.cn",
+    "notice": {
+      "apiKeyUrl": "https://open.bigmodel.cn/usercenter/apikeys"
+    }
+  },
+  category: "apikey",
   transport: {
     baseUrl: "https://api.z.ai/api/anthropic/v1/messages",
     format: "claude",
     urlSuffix: "?beta=true",
-    headers: { ...CLAUDE_API_HEADERS }
+    headers: { ...CLAUDE_API_HEADERS },
+    auth: { "combined": true, "header": "x-api-key", "scheme": "raw" },
+    usage: { url: "https://api.z.ai/api/monitor/usage/quota/limit" },
   },
   models: [
     { id: "glm-5.1", name: "GLM 5.1" },
     { id: "glm-5", name: "GLM 5" },
     { id: "glm-4.7", name: "GLM 4.7" },
     { id: "glm-4.6v", name: "GLM 4.6V (Vision)" }
-  ]
+  ],
+  features: { "usage": true, "usageApikey": true },
 };