feat: AI SDK v6 support (#18433)

packages/opencode/src/session/llm.ts

@@ -1,16 +1,6 @@
-import { Installation } from "@/installation"
 import { Provider } from "@/provider/provider"
 import { Log } from "@/util/log"
-import {
-  streamText,
-  wrapLanguageModel,
-  type ModelMessage,
-  type StreamTextResult,
-  type Tool,
-  type ToolSet,
-  tool,
-  jsonSchema,
-} from "ai"
+import { streamText, wrapLanguageModel, type ModelMessage, type Tool, tool, jsonSchema } from "ai"
 import { mergeDeep, pipe } from "remeda"
 import { GitLabWorkflowLanguageModel } from "gitlab-ai-provider"
 import { ProviderTransform } from "@/provider/transform"
@@ -23,6 +13,7 @@ import { SystemPrompt } from "./system"
 import { Flag } from "@/flag/flag"
 import { Permission } from "@/permission"
 import { Auth } from "@/auth"
+import { Installation } from "@/installation"
 
 export namespace LLM {
   const log = Log.create({ service: "llm" })
@@ -43,8 +34,6 @@ export namespace LLM {
     toolChoice?: "auto" | "required" | "none"
   }
 
-  export type StreamOutput = StreamTextResult<ToolSet, unknown>
-
   export async function stream(input: StreamInput) {
     const l = log
       .clone()
@@ -273,8 +262,10 @@ export namespace LLM {
         model: language,
         middleware: [
           {
+            specificationVersion: "v3" as const,
             async transformParams(args) {
               if (args.type === "stream") {
+                // TODO: verify that LanguageModelV3Prompt is still compat here!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
                 // @ts-expect-error
                 args.params.prompt = ProviderTransform.message(args.params.prompt, input.model, options)
               }