refactor(open-sse): registry consolidation + DRY media/oauth/adhoc cleanup

- Single-source registry: oauth clientId/tokenUrl, usage URLs, image/embed
  configs, search defaultModel, codex fixedPort, google token url derive.
- Remove 29 unused OmniRoute providers (registry 100→71); media intact.
- De-adhoc: codex literals → registry format/oauth flags; reasoningInject,
  image/embed openrouter headers + xai bodyFields config-driven.
- Add REGISTRY_TEMPLATE.js + expand PROVIDER_DEFAULTS/schema JSDoc.
- Baselines updated; PROVIDERS 62 + alias 90 byte-for-byte, golden snapshots.

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

open-sse/providers/registry/fireworks.js

@@ -1,8 +1,25 @@
+
 export default {
   "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"
+    }
+  },
+  category: "apikey",
+  authType: "apikey",
   "transport": {
-    "baseUrl": "https://api.fireworks.ai/inference/v1/chat/completions"
+    "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": [
     {