tweak: include anthropic spoof for providers including "anthropic" in name

packages/opencode/src/session/system.ts

@@ -20,6 +20,10 @@ import PROMPT_CODEX from "./prompt/codex.txt"
 import type { Provider } from "@/provider/provider"
 
 export namespace SystemPrompt {
+  function shouldIncludeAnthropicSpoof(providerID: string) {
+    return providerID !== "google-vertex-anthropic" && providerID.includes("anthropic")
+  }
+
   export function header(providerID: string) {
     if (providerID.includes("anthropic")) return [PROMPT_ANTHROPIC_SPOOF.trim()]
     return []
@@ -120,29 +124,23 @@ export namespace SystemPrompt {
   }
 
   export function compaction(providerID: string) {
-    switch (providerID) {
-      case "anthropic":
-        return [PROMPT_ANTHROPIC_SPOOF.trim(), PROMPT_COMPACTION]
-      default:
-        return [PROMPT_COMPACTION]
+    if (shouldIncludeAnthropicSpoof(providerID)) {
+      return [PROMPT_ANTHROPIC_SPOOF.trim(), PROMPT_COMPACTION]
     }
+    return [PROMPT_COMPACTION]
   }
 
   export function summarize(providerID: string) {
-    switch (providerID) {
-      case "anthropic":
-        return [PROMPT_ANTHROPIC_SPOOF.trim(), PROMPT_SUMMARIZE]
-      default:
-        return [PROMPT_SUMMARIZE]
+    if (shouldIncludeAnthropicSpoof(providerID)) {
+      return [PROMPT_ANTHROPIC_SPOOF.trim(), PROMPT_SUMMARIZE]
     }
+    return [PROMPT_SUMMARIZE]
   }
 
   export function title(providerID: string) {
-    switch (providerID) {
-      case "anthropic":
-        return [PROMPT_ANTHROPIC_SPOOF.trim(), PROMPT_TITLE]
-      default:
-        return [PROMPT_TITLE]
+    if (shouldIncludeAnthropicSpoof(providerID)) {
+      return [PROMPT_ANTHROPIC_SPOOF.trim(), PROMPT_TITLE]
     }
+    return [PROMPT_TITLE]
   }
 }