fix(runner): restore sandbox environment support

packages/shared/src/environment-support.test.ts

@@ -7,6 +7,15 @@ import {
 } from "./environment-support.js";
 
 describe("isSandboxProviderSupportedForAdapter", () => {
+  it("treats Paperclip Runner as a remote-managed adapter", () => {
+    expect(adapterSupportsRemoteManagedEnvironments("paperclip_runner")).toBe(true);
+    expect(supportedEnvironmentDriversForAdapter("paperclip_runner")).toEqual([
+      "local",
+      "ssh",
+      "sandbox",
+    ]);
+  });
+
   it("accepts additional sandbox providers for remote-managed adapters", () => {
     expect(
       isSandboxProviderSupportedForAdapter("codex_local", "fake-plugin", ["fake-plugin"]),

packages/shared/src/environment-support.ts

@@ -67,6 +67,7 @@ export interface EnvironmentCapabilities {
 const REMOTE_MANAGED_ADAPTERS = new Set<AgentAdapterType>([
   "claude_local",
   "codex_local",
+  "paperclip_runner",
   "cursor",
   "gemini_local",
   "grok_local",