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/huggingface.js

@@ -1,54 +1,31 @@
-
 export default {
-  "id": "huggingface",
-  "alias": "huggingface",
+  id: "huggingface",
+  alias: "huggingface",
+  aliases: [
+    "hf",
+  ],
+  uiAlias: "hf",
   display: {
-      "name": "HuggingFace",
-      "icon": "face",
-      "color": "#FFD21E",
-      "textIcon": "HF",
-      "website": "https://huggingface.co",
-      "notice": {
-          "apiKeyUrl": "https://huggingface.co/settings/tokens"
-      }
+    name: "HuggingFace",
+    icon: "face",
+    color: "#FFD21E",
+    textIcon: "HF",
+    website: "https://huggingface.co",
+    notice: {
+      apiKeyUrl: "https://huggingface.co/settings/tokens",
+    },
   },
   category: "apikey",
-  uiAlias: "hf",
   authType: "apikey",
-  hiddenKinds: ["tts"],
-  aliases: ["hf"],
-  "transport": null,
-  media: {
-    imageConfig: { baseUrl: "https://api-inference.huggingface.co/models" }
-  },
-  "models": [
-    {
-      "id": "black-forest-labs/FLUX.1-schnell",
-      "name": "FLUX.1 Schnell",
-      "type": "image",
-      "params": []
-    },
-    {
-      "id": "stabilityai/stable-diffusion-xl-base-1.0",
-      "name": "SDXL Base 1.0",
-      "type": "image",
-      "params": []
-    },
-    {
-      "id": "openai/whisper-large-v3",
-      "name": "Whisper Large v3 (HF)",
-      "type": "stt",
-      "params": [
-        "language"
-      ]
-    },
-    {
-      "id": "openai/whisper-small",
-      "name": "Whisper Small (HF)",
-      "type": "stt",
-      "params": [
-        "language"
-      ]
-    }
-  ]
+  hiddenKinds: [
+    "tts",
+  ],
+  transport: null,
+  models: [
+    { id: "black-forest-labs/FLUX.1-schnell", name: "FLUX.1 Schnell", params: [], kind: "image" },
+    { id: "stabilityai/stable-diffusion-xl-base-1.0", name: "SDXL Base 1.0", params: [], kind: "image" },
+    { id: "openai/whisper-large-v3", name: "Whisper Large v3 (HF)", params: ["language"], kind: "stt" },
+    { id: "openai/whisper-small", name: "Whisper Small (HF)", params: ["language"], kind: "stt" },
+  ],
+  imageConfig: { baseUrl: "https://api-inference.huggingface.co/models" },
 };