fix(llm): map all providers to correct @ai-sdk npm package

customProviderFromEntry only handled "openai-compatible", leaving
"anthropic", "openai", "google", etc. with npm=undefined. This caused
the fallback to @ai-sdk/openai-compatible for all non-clickzetta custom
providers, sending /v1/chat/completions instead of the protocol-correct
endpoint (e.g. /v1/messages for Anthropic).

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

Author: suibianwanwan

packages/opencode/src/config/profiles-llm.ts

@@ -301,7 +301,17 @@ function customProviderFromEntry(entry: ParsedLlmEntry) {
   if (!entry.model) return undefined
   return {
     name: entry.name,
-    npm: entry.provider === "openai-compatible" ? "@ai-sdk/openai-compatible" : undefined,
+    npm: (
+      {
+        "anthropic": "@ai-sdk/anthropic",
+        "openai": "@ai-sdk/openai",
+        "openai-compatible": "@ai-sdk/openai-compatible",
+        "google": "@ai-sdk/google",
+        "azure": "@ai-sdk/azure",
+        "bedrock": "@ai-sdk/amazon-bedrock",
+        "openrouter": "@openrouter/ai-sdk-provider",
+      } as Record<string, string>
+    )[entry.provider] ?? "@ai-sdk/openai-compatible",
     api: entry.baseURL,
     env: [],
     models: {