refactor(registry): B2 migrate to LiteLLM-style schema — unified models[] with kind field

- 71 registry files: flat `media.*Config.models` → `models[]` with `kind` field
- `media` wrapper removed → serviceKinds, *Config fields promoted top-level
- `type` field renamed to `kind` (llm/image/tts/stt/embedding/embedding/video/music)
- providers/index.js: PROVIDER_MEDIA now built from flat top-level media fields
- shared/constants/providers.js: buildProviderEntry reads flat top-level media fields
- route /v1/models: modelKind() uses kind||type; removed subConfig merge block
- models/info route: removed sub-config fallback lookup (all models in PROVIDER_MODELS)
- ttsProviders/index.js: synthesizeViaConfig reads tts models from PROVIDER_MODELS
- test-models route, helpers.js, validate route: kind||type compat
- Baselines: PROVIDERS 62/62 ✅, Alias 90/90 ✅

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

open-sse/providers/registry/deepgram.js

@@ -1,53 +1,32 @@
-
 export default {
-  "id": "deepgram",
-  "alias": "deepgram",
+  id: "deepgram",
+  alias: "deepgram",
+  aliases: [
+    "dg",
+  ],
+  uiAlias: "dg",
   display: {
-      "name": "Deepgram",
-      "icon": "mic",
-      "color": "#13EF93",
-      "textIcon": "DG",
-      "website": "https://deepgram.com",
-      "notice": {
-          "text": "$200 free credit on signup (no card required). Aura-1: $0.015/1k chars, Aura-2: $0.030/1k chars (Pay-As-You-Go).",
-          "apiKeyUrl": "https://console.deepgram.com/api-keys"
-      }
+    name: "Deepgram",
+    icon: "mic",
+    color: "#13EF93",
+    textIcon: "DG",
+    website: "https://deepgram.com",
+    notice: {
+      text: "$200 free credit on signup (no card required). Aura-1: $0.015/1k chars, Aura-2: $0.030/1k chars (Pay-As-You-Go).",
+      apiKeyUrl: "https://console.deepgram.com/api-keys",
+    },
   },
   category: "apikey",
-  uiAlias: "dg",
   authType: "apikey",
-  aliases: ["dg"],
-  "transport": {
-    "baseUrl": "https://api.deepgram.com/v1/listen"
+  transport: {
+    baseUrl: "https://api.deepgram.com/v1/listen",
   },
-  media: {
-    serviceKinds: ["stt"],
-    sttConfig: { baseUrl: "https://api.deepgram.com/v1/listen", authType: "apikey", authHeader: "token", format: "deepgram", models: [{ id: "nova-3", name: "Nova 3" }, { id: "nova-2", name: "Nova 2" }, { id: "nova", name: "Nova" }] }
-  },
-  "models": [
-    {
-      "id": "nova-3",
-      "name": "Nova 3",
-      "type": "stt",
-      "params": [
-        "language"
-      ]
-    },
-    {
-      "id": "nova-2",
-      "name": "Nova 2",
-      "type": "stt",
-      "params": [
-        "language"
-      ]
-    },
-    {
-      "id": "whisper-large",
-      "name": "Whisper Large",
-      "type": "stt",
-      "params": [
-        "language"
-      ]
-    }
-  ]
+  models: [
+    { id: "nova-3", name: "Nova 3", params: ["language"], kind: "stt" },
+    { id: "nova-2", name: "Nova 2", params: ["language"], kind: "stt" },
+    { id: "whisper-large", name: "Whisper Large", params: ["language"], kind: "stt" },
+    { id: "nova", name: "Nova", kind: "stt" },
+  ],
+  serviceKinds: ["stt"],
+  sttConfig: { baseUrl: "https://api.deepgram.com/v1/listen", authType: "apikey", authHeader: "token", format: "deepgram" },
 };