Self-Host GitHub integration multiple workspaces

[anderson-oki]

Hi,

We're self-hosting Multica and have multiple workspaces on the same instance. We'd like to connect the same GitHub App installation to more than one workspace.

What we tried:

Since the GitHub App was already installed on our org, clicking "Connect GitHub" from a second workspace didn't redirect back to the setup callback. We worked around this by manually calling /api/github/setup?installation_id=&state= directly.

What we found:

The setup callback uses an upsert with ON CONFLICT (installation_id) DO UPDATE SET workspace_id = EXCLUDED.workspace_id, which means connecting the installation to a second workspace silently disconnects the first one. The installation_id unique constraint enforces a strict 1:1 mapping between a GitHub installation and a workspace.

Questions:

1. Is there a recommended workaround for this today?
2. Is multi-workspace support for a single installation on the roadmap?
3. Would a PR that relaxes the unique constraint and allows one installation to serve multiple workspaces be welcome?