support custom api url per model

packages/opencode/src/provider/models.ts

@@ -64,7 +64,7 @@ export namespace ModelsDev {
     status: z.enum(["alpha", "beta", "deprecated"]).optional(),
     options: z.record(z.string(), z.any()),
     headers: z.record(z.string(), z.string()).optional(),
-    provider: z.object({ npm: z.string() }).optional(),
+    provider: z.object({ npm: z.string(), api: z.string() }).optional(),
     variants: z.record(z.string(), z.record(z.string(), z.any())).optional(),
   })
   export type Model = z.infer<typeof Model>

packages/opencode/src/provider/provider.ts

@@ -629,7 +629,7 @@ export namespace Provider {
       family: model.family,
       api: {
         id: model.id,
-        url: provider.api!,
+        url: model.provider?.api ?? provider.api!,
         npm: model.provider?.npm ?? provider.npm ?? "@ai-sdk/openai-compatible",
       },
       status: model.status ?? "active",
@@ -781,7 +781,7 @@ export namespace Provider {
               existingModel?.api.npm ??
               modelsDev[providerID]?.npm ??
               "@ai-sdk/openai-compatible",
-            url: provider?.api ?? existingModel?.api.url ?? modelsDev[providerID]?.api,
+            url: model.provider?.api ?? provider?.api ?? existingModel?.api.url ?? modelsDev[providerID]?.api,
           },
           status: model.status ?? existingModel?.status ?? "active",
           name,