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/blackbox.js

@@ -1,91 +1,41 @@
-
 export default {
-  "id": "blackbox",
-  "alias": "blackbox",
+  id: "blackbox",
+  alias: "blackbox",
+  aliases: [
+    "bb",
+  ],
+  uiAlias: "bb",
   display: {
-      "name": "Blackbox AI",
-      "icon": "smart_toy",
-      "color": "#5B5FEF",
-      "textIcon": "BB",
-      "website": "https://blackbox.ai",
-      "notice": {
-          "apiKeyUrl": "https://www.blackbox.ai/api-management"
-      }
+    name: "Blackbox AI",
+    icon: "smart_toy",
+    color: "#5B5FEF",
+    textIcon: "BB",
+    website: "https://blackbox.ai",
+    notice: {
+      apiKeyUrl: "https://www.blackbox.ai/api-management",
+    },
   },
   category: "apikey",
-  uiAlias: "bb",
-  aliases: ["bb"],
-  "transport": {
-    "baseUrl": "https://api.blackbox.ai/chat/completions"
+  transport: {
+    baseUrl: "https://api.blackbox.ai/chat/completions",
   },
-  "models": [
-    {
-      "id": "gpt-4o",
-      "name": "GPT-4o"
-    },
-    {
-      "id": "gpt-4o-mini",
-      "name": "GPT-4o mini"
-    },
-    {
-      "id": "claude-sonnet-4.6",
-      "name": "Claude Sonnet 4.6"
-    },
-    {
-      "id": "claude-sonnet-4.5",
-      "name": "Claude Sonnet 4.5"
-    },
-    {
-      "id": "claude-opus-4.6",
-      "name": "Claude Opus 4.6"
-    },
-    {
-      "id": "claude-sonnet-4-6",
-      "name": "Claude Sonnet 4.6 (Legacy)"
-    },
-    {
-      "id": "claude-opus-4-6",
-      "name": "Claude Opus 4.6 (Legacy)"
-    },
-    {
-      "id": "deepseek-chat",
-      "name": "DeepSeek Chat"
-    },
-    {
-      "id": "deepseek-v3-671b",
-      "name": "DeepSeek V3 671B"
-    },
-    {
-      "id": "deepseek-r1",
-      "name": "DeepSeek R1"
-    },
-    {
-      "id": "o1",
-      "name": "OpenAI o1"
-    },
-    {
-      "id": "o3-mini",
-      "name": "OpenAI o3-mini"
-    },
-    {
-      "id": "gemini-2.5-flash",
-      "name": "Gemini 2.5 Flash"
-    },
-    {
-      "id": "gemini-3-flash-preview",
-      "name": "Gemini 3 Flash Preview"
-    },
-    {
-      "id": "qwen3-coder-plus",
-      "name": "Qwen3 Coder Plus"
-    },
-    {
-      "id": "qwen3-max",
-      "name": "Qwen3 Max"
-    },
-    {
-      "id": "qwen3-vl-plus",
-      "name": "Qwen3 VL Plus"
-    }
-  ]
+  models: [
+    { id: "gpt-4o", name: "GPT-4o" },
+    { id: "gpt-4o-mini", name: "GPT-4o mini" },
+    { id: "claude-sonnet-4.6", name: "Claude Sonnet 4.6" },
+    { id: "claude-sonnet-4.5", name: "Claude Sonnet 4.5" },
+    { id: "claude-opus-4.6", name: "Claude Opus 4.6" },
+    { id: "claude-sonnet-4-6", name: "Claude Sonnet 4.6 (Legacy)" },
+    { id: "claude-opus-4-6", name: "Claude Opus 4.6 (Legacy)" },
+    { id: "deepseek-chat", name: "DeepSeek Chat" },
+    { id: "deepseek-v3-671b", name: "DeepSeek V3 671B" },
+    { id: "deepseek-r1", name: "DeepSeek R1" },
+    { id: "o1", name: "OpenAI o1" },
+    { id: "o3-mini", name: "OpenAI o3-mini" },
+    { id: "gemini-2.5-flash", name: "Gemini 2.5 Flash" },
+    { id: "gemini-3-flash-preview", name: "Gemini 3 Flash Preview" },
+    { id: "qwen3-coder-plus", name: "Qwen3 Coder Plus" },
+    { id: "qwen3-max", name: "Qwen3 Max" },
+    { id: "qwen3-vl-plus", name: "Qwen3 VL Plus" },
+  ],
 };