refactor(plugins): move provider routing metadata to manifests

extensions/openrouter/openclaw.plugin.json

@@ -2,6 +2,13 @@
   "id": "openrouter",
   "enabledByDefault": true,
   "providers": ["openrouter"],
+  "modelIdNormalization": {
+    "providers": {
+      "openrouter": {
+        "prefixWhenBare": "openrouter"
+      }
+    }
+  },
   "modelPricing": {
     "providers": {
       "openrouter": {
@@ -12,6 +19,19 @@
       }
     }
   },
+  "providerEndpoints": [
+    {
+      "endpointClass": "openrouter",
+      "hostSuffixes": ["openrouter.ai"]
+    }
+  ],
+  "providerRequest": {
+    "providers": {
+      "openrouter": {
+        "family": "openrouter"
+      }
+    }
+  },
   "providerAuthEnvVars": {
     "openrouter": ["OPENROUTER_API_KEY"]
   },