fix(server): Bound workspace cleanup per-session timeout

Keep the workspace filesystem cleanup shutdown step on a count-scaled
outer timeout while using the normal per-session timeout for the inner
owned OSLog cleanup work.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

Author: cameroncooke

src/server/__tests__/mcp-shutdown.test.ts

@@ -204,7 +204,7 @@ describe('runMcpShutdown', () => {
     );
     expect(filesystemStep?.status).toBe('completed');
     expect(mocks.cleanupOwnedWorkspaceFilesystemArtifacts).toHaveBeenCalledWith({
-      timeoutMs: 2100,
+      timeoutMs: 1000,
     });
   });
 

src/server/mcp-shutdown.ts

@@ -199,7 +199,7 @@ export async function runMcpShutdown(input: {
       timeoutMs: workspaceFilesystemCleanupTimeoutMs,
       operation: () =>
         cleanupOwnedWorkspaceFilesystemArtifacts({
-          timeoutMs: workspaceFilesystemCleanupTimeoutMs,
+          timeoutMs: STEP_TIMEOUT_MS,
         }),
     },
     {