Land newly-signed-up invited users in the invited org

[ignaciojimenezr]

Pairs with the backend change (mcpjam-backend#652). When a brand-new user signs up from an org invite, they used to land in their own auto-created personal org instead of the org they were invited to. This drops them into the right one.

• The signup invite email now links to /?invite_org={id} (backend PR). This captures that id at boot — before the WorkOS redirect drops the URL — stashes it, and strips it from the URL.
• After signup, once the user is authenticated and actually a member of that org, it's set as their active org (then the stash is cleared so it only fires once).
• Safe fallback: if they're not a member yet (e.g. a paid seat still pending), nothing happens and the stash waits for a later load. No effect on existing users.

Reuses the existing active-org machinery — no routing or auth changes.

Draft / do not merge — needs the backend PR first, and wants a quick test in the WorkOS signup flow.

🤖 Generated with Claude Code

---

Summary by cubic

Newly signed-up invited users now land in the org they were invited to, with a one-click “Switch organization” prompt once membership is confirmed. Signed-out users hitting invite links or org routes are guided through the right auth flow and returned to the org.

• New Features

  • Capture ?invite_org at boot, stash a return-path marker in sessionStorage, and strip it from the URL.
  • Signed out on an invite link: start WorkOS sign-up; signed out on an org route: start sign-in and stash the org return path.
  • OAuth callback restores the invite/org return path only after the Convex user is real (not guest) and linked to the WorkOS user, then clears the marker.
  • If membership is pending, show a one-per-session info toast; once confirmed, show a success toast with “Switch organization” (no auto-switch).
  • In ShareProjectDialog, show a clear toast when an invite requires paid seat payment.

• Dependencies

  • Requires backend invite emails to include ?invite_org={id}.

^{Written for commit 7f0cfee. Summary will update on new commits.}

[chelojimenez]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scan Engine	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues

💻 Catch issues earlier using the plugins for VS Code, JetBrains IDEs, Visual Studio, and Eclipse.

[github-actions]

Internal preview

Preview URL: https://mcp-inspector-pr-2976.up.railway.app
Deployed commit: 1454ee9
PR head commit: 7f0cfee
Backend target: staging fallback.
Health: ✅ Convex reachable
Access is employee-only in non-production environments.