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/fireworks.js

@@ -1,43 +1,27 @@
-
 export default {
-  "id": "fireworks",
-  "alias": "fireworks",
+  id: "fireworks",
+  alias: "fireworks",
   display: {
-    "name": "Fireworks AI",
-    "icon": "local_fire_department",
-    "color": "#7B2EF2",
-    "textIcon": "FW",
-    "website": "https://fireworks.ai",
-    "notice": {
-      "apiKeyUrl": "https://fireworks.ai/account/api-keys"
-    }
+    name: "Fireworks AI",
+    icon: "local_fire_department",
+    color: "#7B2EF2",
+    textIcon: "FW",
+    website: "https://fireworks.ai",
+    notice: {
+      apiKeyUrl: "https://fireworks.ai/account/api-keys",
+    },
   },
   category: "apikey",
   authType: "apikey",
-  "transport": {
-    "baseUrl": "https://api.fireworks.ai/inference/v1/chat/completions",
-    "validateUrl": "https://api.fireworks.ai/inference/v1/models"
+  transport: {
+    baseUrl: "https://api.fireworks.ai/inference/v1/chat/completions",
+    validateUrl: "https://api.fireworks.ai/inference/v1/models",
   },
-  media: {
-    embeddingConfig: { baseUrl: "https://api.fireworks.ai/inference/v1/embeddings" }
-  },
-  "models": [
-    {
-      "id": "accounts/fireworks/models/deepseek-v3p1",
-      "name": "DeepSeek V3.1"
-    },
-    {
-      "id": "accounts/fireworks/models/llama-v3p3-70b-instruct",
-      "name": "Llama 3.3 70B"
-    },
-    {
-      "id": "accounts/fireworks/models/qwen3-235b-a22b",
-      "name": "Qwen3 235B"
-    },
-    {
-      "id": "nomic-ai/nomic-embed-text-v1.5",
-      "name": "Nomic Embed Text v1.5",
-      "type": "embedding"
-    }
-  ]
+  models: [
+    { id: "accounts/fireworks/models/deepseek-v3p1", name: "DeepSeek V3.1" },
+    { id: "accounts/fireworks/models/llama-v3p3-70b-instruct", name: "Llama 3.3 70B" },
+    { id: "accounts/fireworks/models/qwen3-235b-a22b", name: "Qwen3 235B" },
+    { id: "nomic-ai/nomic-embed-text-v1.5", name: "Nomic Embed Text v1.5", kind: "embedding" },
+  ],
+  embeddingConfig: { baseUrl: "https://api.fireworks.ai/inference/v1/embeddings" },
 };