Invite teammates with reminders and resend

Invitations no longer get lost: invitees land back on the invitation after signing in, and unanswered invites get a nudge.

• Added a reminder to invitees 3 days after the invitation, and a notice to the inviter when an invitation expires.
• Added Resend and expired invitations to Settings › Members, plus suggestions of colleagues on your company domain who already use TofuPilot.
• Improved the invitation email and page: they now name who invited you, your role and the expiry date, and you can decline an invitation.
• Fixed sign-in losing the invitation link, and added a banner when you have a pending invitation to another organization.
• Improved security of the MCP connection and the Linear integration. Existing MCP clients reconnect once.