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/fal-ai.js

@@ -1,91 +1,32 @@
-
 export default {
-  "id": "fal-ai",
-  "alias": "fal-ai",
+  id: "fal-ai",
+  alias: "fal-ai",
+  aliases: [
+    "fal",
+  ],
+  uiAlias: "fal",
   display: {
-    "name": "Fal.ai",
-    "icon": "image",
-    "color": "#2563EB",
-    "textIcon": "FL",
-    "website": "https://fal.ai",
-    "notice": {
-      "apiKeyUrl": "https://fal.ai/dashboard/keys"
-    }
+    name: "Fal.ai",
+    icon: "image",
+    color: "#2563EB",
+    textIcon: "FL",
+    website: "https://fal.ai",
+    notice: {
+      apiKeyUrl: "https://fal.ai/dashboard/keys",
+    },
   },
   category: "apikey",
-  uiAlias: "fal",
   authType: "apikey",
-  aliases: ["fal"],
-  "transport": null,
-  media: {
-    serviceKinds: ["image"],
-    imageConfig: { baseUrl: "https://queue.fal.run" }
-  },
-  "models": [
-    {
-      "id": "fal-ai/flux/schnell",
-      "name": "FLUX Schnell",
-      "type": "image",
-      "params": [
-        "n",
-        "size"
-      ]
-    },
-    {
-      "id": "fal-ai/flux/dev",
-      "name": "FLUX Dev",
-      "type": "image",
-      "params": [
-        "n",
-        "size"
-      ]
-    },
-    {
-      "id": "fal-ai/flux-pro/v1.1",
-      "name": "FLUX Pro v1.1",
-      "type": "image",
-      "params": [
-        "n",
-        "size"
-      ]
-    },
-    {
-      "id": "fal-ai/flux-pro/v1.1-ultra",
-      "name": "FLUX Pro v1.1 Ultra",
-      "type": "image",
-      "params": [
-        "n",
-        "size"
-      ]
-    },
-    {
-      "id": "fal-ai/recraft-v3",
-      "name": "Recraft V3",
-      "type": "image",
-      "params": [
-        "n",
-        "size",
-        "style"
-      ]
-    },
-    {
-      "id": "fal-ai/ideogram/v2",
-      "name": "Ideogram V2",
-      "type": "image",
-      "params": [
-        "n",
-        "size",
-        "style"
-      ]
-    },
-    {
-      "id": "fal-ai/stable-diffusion-v35-large",
-      "name": "SD 3.5 Large",
-      "type": "image",
-      "params": [
-        "n",
-        "size"
-      ]
-    }
-  ]
+  transport: null,
+  models: [
+    { id: "fal-ai/flux/schnell", name: "FLUX Schnell", params: ["n","size"], kind: "image" },
+    { id: "fal-ai/flux/dev", name: "FLUX Dev", params: ["n","size"], kind: "image" },
+    { id: "fal-ai/flux-pro/v1.1", name: "FLUX Pro v1.1", params: ["n","size"], kind: "image" },
+    { id: "fal-ai/flux-pro/v1.1-ultra", name: "FLUX Pro v1.1 Ultra", params: ["n","size"], kind: "image" },
+    { id: "fal-ai/recraft-v3", name: "Recraft V3", params: ["n","size","style"], kind: "image" },
+    { id: "fal-ai/ideogram/v2", name: "Ideogram V2", params: ["n","size","style"], kind: "image" },
+    { id: "fal-ai/stable-diffusion-v35-large", name: "SD 3.5 Large", params: ["n","size"], kind: "image" },
+  ],
+  serviceKinds: ["image"],
+  imageConfig: { baseUrl: "https://queue.fal.run" },
 };