feat(provider): add User-Agent header for GitLab AI Gateway requests (#11818)

packages/opencode/src/provider/provider.ts

@@ -1,4 +1,5 @@
 import z from "zod"
+import os from "os"
 import fuzzysort from "fuzzysort"
 import { Config } from "../config/config"
 import { mapValues, mergeDeep, omit, pickBy, sortBy } from "remeda"
@@ -35,8 +36,9 @@ import { createGateway } from "@ai-sdk/gateway"
 import { createTogetherAI } from "@ai-sdk/togetherai"
 import { createPerplexity } from "@ai-sdk/perplexity"
 import { createVercel } from "@ai-sdk/vercel"
-import { createGitLab } from "@gitlab/gitlab-ai-provider"
+import { createGitLab, VERSION as GITLAB_PROVIDER_VERSION } from "@gitlab/gitlab-ai-provider"
 import { ProviderTransform } from "./transform"
+import { Installation } from "../installation"
 
 export namespace Provider {
   const log = Log.create({ service: "provider" })
@@ -424,11 +426,17 @@ export namespace Provider {
       const config = await Config.get()
       const providerConfig = config.provider?.["gitlab"]
 
+      const aiGatewayHeaders = {
+        "User-Agent": `opencode/${Installation.VERSION} gitlab-ai-provider/${GITLAB_PROVIDER_VERSION} (${os.platform()} ${os.release()}; ${os.arch()})`,
+        ...(providerConfig?.options?.aiGatewayHeaders || {}),
+      }
+
       return {
         autoload: !!apiKey,
         options: {
           instanceUrl,
           apiKey,
+          aiGatewayHeaders,
           featureFlags: {
             duo_agent_platform_agentic_chat: true,
             duo_agent_platform: true,
@@ -437,6 +445,7 @@ export namespace Provider {
         },
         async getModel(sdk: ReturnType<typeof createGitLab>, modelID: string) {
           return sdk.agenticChat(modelID, {
+            aiGatewayHeaders,
             featureFlags: {
               duo_agent_platform_agentic_chat: true,
               duo_agent_platform: true,