Carry managed OpenCode home helper through Storybook layer

* codex/restack-13006-r121:
  Preserve sandbox home in managed OpenCode runtime configuration

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/adapters/opencode-local/src/server/runtime-config.test.ts

@@ -2,10 +2,43 @@ import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
 import { afterEach, describe, expect, it } from "vitest";
-import { prepareOpenCodeRuntimeConfig } from "./runtime-config.js";
+import { prepareManagedOpenCodeRemoteHomes, prepareOpenCodeRuntimeConfig } from "./runtime-config.js";
 
 const cleanupPaths = new Set<string>();
 
+describe("prepareManagedOpenCodeRemoteHomes", () => {
+  it("keeps the sandbox home while isolating managed credentials outside scoped folders", () => {
+    const env = { HOME: "/host/private", XDG_DATA_HOME: "/host/data" };
+    prepareManagedOpenCodeRemoteHomes({
+      env,
+      config: { managedAiConnection: true },
+      runtimeRootDir: "/home/daytona/.paperclip-runtime/opencode",
+      runId: "run-1",
+      configDir: "/home/daytona/.paperclip-runtime/opencode/config",
+      workFolderHome: "/home/daytona",
+    });
+    expect(env).toEqual({
+      HOME: "/home/daytona",
+      XDG_CONFIG_HOME: "/home/daytona/.paperclip-runtime/opencode/config",
+      XDG_DATA_HOME: "/home/daytona/.paperclip-runtime/opencode/managed-auth/run-1/data",
+      XDG_CACHE_HOME: "/home/daytona/.paperclip-runtime/opencode/managed-auth/run-1/cache",
+      XDG_STATE_HOME: "/home/daytona/.paperclip-runtime/opencode/managed-auth/run-1/state",
+    });
+  });
+
+  it("preserves the isolated remote home for execution without work folders", () => {
+    const env: Record<string, string> = { HOME: "/host/private" };
+    prepareManagedOpenCodeRemoteHomes({
+      env,
+      config: { managedAiConnection: true },
+      runtimeRootDir: "/remote/runtime",
+      runId: "run-1",
+    });
+    expect(env.HOME).toBe("/remote/runtime/managed-auth/run-1");
+    expect(env.XDG_DATA_HOME).toBe("/remote/runtime/managed-auth/run-1/data");
+  });
+});
+
 afterEach(async () => {
   await Promise.all(
     [...cleanupPaths].map(async (filepath) => {

packages/adapters/opencode-local/src/server/runtime-config.ts

@@ -248,12 +248,15 @@ export function prepareManagedOpenCodeRemoteHomes(input: {
   runtimeRootDir: string | null | undefined;
   runId: string;
   configDir?: string;
+  workFolderHome?: string;
 }): void {
   if (!input.config.managedAiConnection) return;
   if (!input.runtimeRootDir) throw new Error("Managed OpenCode authentication requires an isolated remote runtime directory.");
   const home = path.posix.join(input.runtimeRootDir, "managed-auth", input.runId);
   Object.assign(input.env, {
-    HOME: home,
+    // Scoped work folders live beneath the sandbox's real home. OpenCode's
+    // credential/configuration stores still use the isolated XDG directories.
+    HOME: input.workFolderHome ?? home,
     XDG_CONFIG_HOME: input.configDir ?? path.posix.join(home, "config"),
     XDG_DATA_HOME: path.posix.join(home, "data"),
     XDG_CACHE_HOME: path.posix.join(home, "cache"),