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/opencode-go.js

@@ -1,67 +1,36 @@
-
 export default {
-  "id": "opencode-go",
-  "alias": "opencode-go",
+  id: "opencode-go",
+  alias: "opencode-go",
+  aliases: [
+    "ocg",
+  ],
+  uiAlias: "ocg",
   display: {
-      "name": "OpenCode Go",
-      "icon": "terminal",
-      "color": "#E87040",
-      "textIcon": "OC",
-      "website": "https://opencode.ai/auth",
-      "notice": {
-          "text": "OpenCode Go subscription: $5/mo (then  0/mo). Access to Kimi, GLM, Qwen, MiMo, MiniMax models.",
-          "apiKeyUrl": "https://opencode.ai/auth"
-      }
+    name: "OpenCode Go",
+    icon: "terminal",
+    color: "#E87040",
+    textIcon: "OC",
+    website: "https://opencode.ai/auth",
+    notice: {
+      text: "OpenCode Go subscription: $5/mo (then  0/mo). Access to Kimi, GLM, Qwen, MiMo, MiniMax models.",
+      apiKeyUrl: "https://opencode.ai/auth",
+    },
   },
   category: "apikey",
-  uiAlias: "ocg",
-  aliases: ["ocg"],
-  "transport": {
-    "baseUrl": "https://opencode.ai/zen/go/v1/chat/completions",
-    "headers": {}
+  transport: {
+    baseUrl: "https://opencode.ai/zen/go/v1/chat/completions",
+    headers: {},
   },
-  "models": [
-    {
-      "id": "kimi-k2.6",
-      "name": "Kimi K2.6"
-    },
-    {
-      "id": "kimi-k2.5",
-      "name": "Kimi K2.5"
-    },
-    {
-      "id": "glm-5.1",
-      "name": "GLM 5.1"
-    },
-    {
-      "id": "glm-5",
-      "name": "GLM 5"
-    },
-    {
-      "id": "qwen3.5-plus",
-      "name": "Qwen 3.5 Plus"
-    },
-    {
-      "id": "qwen3.6-plus",
-      "name": "Qwen 3.6 Plus"
-    },
-    {
-      "id": "mimo-v2-pro",
-      "name": "MiMo V2 Pro"
-    },
-    {
-      "id": "mimo-v2-omni",
-      "name": "MiMo V2 Omni"
-    },
-    {
-      "id": "minimax-m2.7",
-      "name": "MiniMax M2.7",
-      "targetFormat": "claude"
-    },
-    {
-      "id": "minimax-m2.5",
-      "name": "MiniMax M2.5",
-      "targetFormat": "claude"
-    }
-  ]
+  models: [
+    { id: "kimi-k2.6", name: "Kimi K2.6" },
+    { id: "kimi-k2.5", name: "Kimi K2.5" },
+    { id: "glm-5.1", name: "GLM 5.1" },
+    { id: "glm-5", name: "GLM 5" },
+    { id: "qwen3.5-plus", name: "Qwen 3.5 Plus" },
+    { id: "qwen3.6-plus", name: "Qwen 3.6 Plus" },
+    { id: "mimo-v2-pro", name: "MiMo V2 Pro" },
+    { id: "mimo-v2-omni", name: "MiMo V2 Omni" },
+    { id: "minimax-m2.7", name: "MiniMax M2.7", targetFormat: "claude" },
+    { id: "minimax-m2.5", name: "MiniMax M2.5", targetFormat: "claude" },
+  ],
 };