[Bug]: installer restart fails: "file docker-compose-graphiti.yml does not exist" when Graphiti is disabled

[qzinori]

Affected Component

Other (please specify in the description)

Describe the bug

When running ./installer restart with GRAPHITI_ENABLED=false in .env, the installer fails with:Failed to stop graphiti compose stack: file /mnt/DataDisk/pentagi/docker-compose-graphiti.yml does not exist
Failed to execute %s operation: failed to restart stack: file /mnt/DataDisk/pentagi/docker-compose-graphiti.yml does not exist

Steps to Reproduce

1. Download latest installer (v2.0.0-87ac00f)

2. Run ./installer to configure, set Graphiti to disabled

3. Run ./installer restart

4. See error

System Configuration

• OS: Ubuntu 26.04 LTS
• Architecture: amd64
• Installer version: v2.0.0-87ac00f
• Docker: installed

Logs and Artifacts

waiting for command: /usr/bin/docker compose --env-file /mnt/DataDisk/pentagi/.env -f /mnt/DataDisk/pentagi/docker-compose-graphiti.yml stop

Screenshots or Recordings

Verification

• I have checked that this issue hasn't been already reported
• I have provided all relevant configuration files (with sensitive data removed)
• I have included relevant logs and error messages
• I am running the latest version of PentAGI