Fix Playwright workspace isolation (#1627)

* Fix Playwright workspace isolation

* Clean up empty project E2E cleanup

* Clean up worktree restore E2E projects

packages/app/e2e/helpers/archive-tab.ts

@@ -35,10 +35,6 @@ function buildSeededStoragePayload() {
  * idle agent from the same client it uses for everything else.
  */
 export interface IdleAgentSeedClient {
-  createWorkspace(input: { source: { kind: "directory"; path: string } }): Promise<{
-    workspace: { id: string } | null;
-    error: string | null;
-  }>;
   createAgent(options: {
     provider: string;
     model: string;
@@ -56,20 +52,14 @@ export interface IdleAgentSeedClient {
 
 export async function createIdleAgent(
   client: IdleAgentSeedClient,
-  input: { cwd: string; title: string },
+  input: { cwd: string; workspaceId: string; title: string },
 ): Promise<ArchiveTabAgent> {
-  const createdWorkspace = await client.createWorkspace({
-    source: { kind: "directory", path: input.cwd },
-  });
-  if (!createdWorkspace.workspace) {
-    throw new Error(createdWorkspace.error ?? `Failed to create workspace ${input.cwd}`);
-  }
   const created = await client.createAgent({
     provider: "opencode",
     model: "opencode/gpt-5-nano",
     modeId: "bypassPermissions",
     cwd: input.cwd,
-    workspaceId: createdWorkspace.workspace.id,
+    workspaceId: input.workspaceId,
     title: input.title,
   });
   const snapshot = await client.waitForAgentUpsert(
@@ -84,7 +74,7 @@ export async function createIdleAgent(
     id: created.id,
     title: input.title,
     cwd: input.cwd,
-    workspaceId: createdWorkspace.workspace.id,
+    workspaceId: input.workspaceId,
   };
 }