refactor(open-sse): P3 provider registry — split into providers/registry/{id}.js

- 100 registry files: transport + models co-located per provider (Mongoose-style)
- providers/shared.js: shared Claude headers + OS/arch helpers (deduped)
- providers/models/helpers.js: withCodexReviewModels (kept dynamic)
- providers/index.js builds PROVIDERS + PROVIDER_MODELS = old API (content byte-for-byte)
- config/providers.js + providerModels.js → barrel re-export, keep accessors + runtime helpers
- Verified: PROVIDERS/MODELS/OAuth/alias byte-for-byte, golden translator tests pass, 0 new regression

Co-authored-by: Cursor <cursoragent@cursor.com>

open-sse/providers/registry/openai.js

@@ -0,0 +1,184 @@
+export default {
+  "id": "openai",
+  "alias": "openai",
+  "transport": {
+    "baseUrl": "https://api.openai.com/v1/chat/completions"
+  },
+  "models": [
+    {
+      "id": "gpt-5.4",
+      "name": "GPT-5.4"
+    },
+    {
+      "id": "gpt-5.4-mini",
+      "name": "GPT-5.4 Mini"
+    },
+    {
+      "id": "gpt-5.4-nano",
+      "name": "GPT-5.4 Nano"
+    },
+    {
+      "id": "gpt-5.2",
+      "name": "GPT-5.2"
+    },
+    {
+      "id": "gpt-5.1",
+      "name": "GPT-5.1"
+    },
+    {
+      "id": "gpt-5",
+      "name": "GPT-5"
+    },
+    {
+      "id": "gpt-5-mini",
+      "name": "GPT-5 Mini"
+    },
+    {
+      "id": "gpt-5-nano",
+      "name": "GPT-5 Nano"
+    },
+    {
+      "id": "gpt-4o",
+      "name": "GPT-4o"
+    },
+    {
+      "id": "gpt-4o-mini",
+      "name": "GPT-4o Mini"
+    },
+    {
+      "id": "gpt-4-turbo",
+      "name": "GPT-4 Turbo"
+    },
+    {
+      "id": "gpt-4.1",
+      "name": "GPT-4.1"
+    },
+    {
+      "id": "gpt-4.1-mini",
+      "name": "GPT-4.1 Mini"
+    },
+    {
+      "id": "gpt-4.1-nano",
+      "name": "GPT-4.1 Nano"
+    },
+    {
+      "id": "o3",
+      "name": "O3"
+    },
+    {
+      "id": "o3-mini",
+      "name": "O3 Mini"
+    },
+    {
+      "id": "o3-pro",
+      "name": "O3 Pro"
+    },
+    {
+      "id": "o4-mini",
+      "name": "O4 Mini"
+    },
+    {
+      "id": "o1",
+      "name": "O1"
+    },
+    {
+      "id": "o1-mini",
+      "name": "O1 Mini"
+    },
+    {
+      "id": "text-embedding-3-large",
+      "name": "Text Embedding 3 Large",
+      "type": "embedding"
+    },
+    {
+      "id": "text-embedding-3-small",
+      "name": "Text Embedding 3 Small",
+      "type": "embedding"
+    },
+    {
+      "id": "text-embedding-ada-002",
+      "name": "Text Embedding Ada 002",
+      "type": "embedding"
+    },
+    {
+      "id": "tts-1",
+      "name": "TTS-1",
+      "type": "tts"
+    },
+    {
+      "id": "tts-1-hd",
+      "name": "TTS-1 HD",
+      "type": "tts"
+    },
+    {
+      "id": "gpt-4o-mini-tts",
+      "name": "GPT-4o Mini TTS",
+      "type": "tts"
+    },
+    {
+      "id": "whisper-1",
+      "name": "Whisper 1",
+      "type": "stt",
+      "params": [
+        "language",
+        "response_format",
+        "temperature",
+        "prompt"
+      ]
+    },
+    {
+      "id": "gpt-4o-transcribe",
+      "name": "GPT-4o Transcribe",
+      "type": "stt",
+      "params": [
+        "language",
+        "response_format",
+        "temperature",
+        "prompt"
+      ]
+    },
+    {
+      "id": "gpt-4o-mini-transcribe",
+      "name": "GPT-4o Mini Transcribe",
+      "type": "stt",
+      "params": [
+        "language",
+        "response_format",
+        "temperature",
+        "prompt"
+      ]
+    },
+    {
+      "id": "gpt-image-1",
+      "name": "GPT Image 1",
+      "type": "image",
+      "params": [
+        "n",
+        "size",
+        "quality",
+        "response_format"
+      ]
+    },
+    {
+      "id": "dall-e-3",
+      "name": "DALL-E 3",
+      "type": "image",
+      "params": [
+        "size",
+        "quality",
+        "style",
+        "response_format"
+      ]
+    },
+    {
+      "id": "dall-e-2",
+      "name": "DALL-E 2",
+      "type": "image",
+      "params": [
+        "n",
+        "size",
+        "response_format"
+      ]
+    }
+  ]
+};