fix(opencode): generate reasoning variants for all OpenRouter models. (#30332)

Co-authored-by: Aiden Cline <63023139+rekram1-node@users.noreply.github.com>
Co-authored-by: Aiden Cline <aidenpcline@gmail.com>

packages/opencode/src/provider/transform.ts

@@ -703,12 +703,11 @@ export function variants(model: Provider.Model): Record<string, Record<string, a
 
   switch (model.api.npm) {
     case "@openrouter/ai-sdk-provider":
-      if (!id.includes("gpt") && !id.includes("gemini-3") && !id.includes("claude")) return {}
       return Object.fromEntries(
-        (id.includes("gpt") ? openaiCompatibleReasoningEfforts(id) : OPENAI_EFFORTS).map((effort) => [
-          effort,
-          { reasoning: { effort } },
-        ]),
+        (model.api.id.startsWith("openai/") || id.includes("gpt")
+          ? openaiCompatibleReasoningEfforts(model.api.id)
+          : WIDELY_SUPPORTED_EFFORTS
+        ).map((effort) => [effort, { reasoning: { effort } }]),
       )
 
     case "ai-gateway-provider": {
@@ -1202,6 +1201,9 @@ export function smallOptions(model: Provider.Model) {
     return mergeDeep(base, small)
   }
   if (model.providerID === "openrouter" || model.providerID === "llmgateway") {
+    if (model.providerID === "openrouter" && small.reasoning?.effort === "low") {
+      return { reasoning: { effort: "none" } }
+    }
     if (Object.keys(small).length === 0 && model.api.id.includes("google")) {
       return { reasoning: { enabled: false } }
     }