fix(opencode): follow latest adaptive reasoning variants

Author: RhoninSeiei

packages/opencode/src/provider/transform.ts

@@ -51,9 +51,7 @@ function normalizeMessages(
   _options: Record<string, unknown>,
 ): ModelMessage[] {
   const modelID = `${model.id} ${model.api.id}`.toLowerCase()
-  const preserveAdaptiveAnthropicReasoning = ["sonnet-4-6", "sonnet-4.6", "opus-4-6", "opus-4.6"].some(
-    (variant) => modelID.includes(variant),
-  )
+  const preserveAdaptiveAnthropicReasoning = !!anthropicAdaptiveEfforts(modelID)
 
   // Many providers (Anthropic, Bedrock, and proxies like openai-compatible
   // forwarding to Bedrock) reject messages with empty text content blocks.
@@ -409,10 +407,12 @@ const WIDELY_SUPPORTED_EFFORTS = ["low", "medium", "high"]
 const OPENAI_EFFORTS = ["none", "minimal", ...WIDELY_SUPPORTED_EFFORTS, "xhigh"]
 
 function anthropicAdaptiveEfforts(apiId: string): string[] | null {
-  if (["opus-4-7", "opus-4.7"].some((v) => apiId.includes(v))) {
+  const normalized = apiId.toLowerCase()
+
+  if (["opus-4-7", "opus-4.7"].some((v) => normalized.includes(v))) {
     return ["low", "medium", "high", "xhigh", "max"]
   }
-  if (["opus-4-6", "opus-4.6", "sonnet-4-6", "sonnet-4.6"].some((v) => apiId.includes(v))) {
+  if (["opus-4-6", "opus-4.6", "sonnet-4-6", "sonnet-4.6"].some((v) => normalized.includes(v))) {
     return ["low", "medium", "high", "max"]
   }
   return null

packages/opencode/test/provider/transform.test.ts

@@ -1215,10 +1215,10 @@ describe("ProviderTransform.message - anthropic empty content filtering", () =>
   test("preserves whitespace text separators in assistant reasoning messages", () => {
     const adaptiveAnthropicModel = {
       ...anthropicModel,
-      id: "anthropic/claude-sonnet-4-6",
+      id: "anthropic/claude-opus-4-7",
       api: {
         ...anthropicModel.api,
-        id: "claude-sonnet-4-6-20260301",
+        id: "claude-opus-4-7-20260401",
       },
       capabilities: {
         ...anthropicModel.capabilities,

packages/opencode/test/session/message-v2.test.ts

@@ -723,10 +723,10 @@ describe("session.message-v2.toModelMessage", () => {
     const assistantID = "m-assistant-reasoning"
     const adaptiveModel: Provider.Model = {
       ...model,
-      id: ModelID.make("anthropic/claude-sonnet-4-6"),
+      id: ModelID.make("anthropic/claude-opus-4-7"),
       providerID: ProviderID.make("anthropic"),
       api: {
-        id: "claude-sonnet-4-6-20260301",
+        id: "claude-opus-4-7-20260401",
         url: "https://api.anthropic.com",
         npm: "@ai-sdk/anthropic",
       },