Split syncGithubSessionFromToken into a fast path (initGithubSession:
exchange code, get viewer, store token+identity) and a slow path
(syncGithubOrganizations: list orgs/installations, sync workspaces).
completeAppGithubAuth now returns the 302 redirect in ~2s instead of
~18s by enqueuing the org sync to the workspace workflow queue
(fire-and-forget). This eliminates the proxy timeout window that was
causing duplicate callback requests.
bootstrapAppGithubSession (dev-only) still calls the full synchronous
sync since proxy timeouts are not a concern and it needs the session
fully populated before returning.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Clear oauthState before exchangeCode so duplicate callback requests
fail the state check instead of hitting GitHub with a consumed code.
Marked as HACK — root cause of duplicate HTTP requests is unknown.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
