feat: add resend capability for platform and account invite codes

Revoke-and-recreate flow for both invite systems with email delivery
via Resend API. Includes account invite email template and audit logging.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/api/accounts.ts

@@ -43,6 +43,11 @@ export const accountsApi = {
     const response = await apiClient.get<AccountInvite[]>('/accounts/me/invites')
     return response.data
   },
+
+  async resendInvite(inviteId: string): Promise<AccountInvite> {
+    const response = await apiClient.post<AccountInvite>(`/accounts/me/invites/${inviteId}/resend`)
+    return response.data
+  },
 }
 
 export default accountsApi

frontend/src/api/admin.ts

@@ -56,6 +56,8 @@ export const adminApi = {
     api.post<InviteCodeResponse>('/invites', data).then(r => r.data),
   deleteInviteCode: (code: string) =>
     api.delete(`/invites/${code}`),
+  resendInviteCode: (code: string) =>
+    api.post<InviteCodeResponse>(`/invites/${code}/resend`).then(r => r.data),
 
   // Audit Logs
   listAuditLogs: (params?: Record<string, unknown>) =>

frontend/src/pages/AccountSettingsPage.tsx

@@ -1,6 +1,6 @@
 import { useEffect, useState } from 'react'
 import { Link } from 'react-router-dom'
-import { Building2, Users, Mail, Crown, Loader2, AlertCircle, Check, X, Settings, FolderTree } from 'lucide-react'
+import { Building2, Users, Mail, Crown, Loader2, AlertCircle, Check, X, Settings, FolderTree, RefreshCw } from 'lucide-react'
 import { accountsApi } from '@/api/accounts'
 import type { Account, AccountMember, AccountInvite } from '@/types'
 import { cn } from '@/lib/utils'
@@ -102,6 +102,22 @@ export function AccountSettingsPage() {
     }
   }
 
+  const [resendingId, setResendingId] = useState<string | null>(null)
+
+  const handleResendInvite = async (inviteId: string) => {
+    setResendingId(inviteId)
+    try {
+      await accountsApi.resendInvite(inviteId)
+      toast.success('Invite resent with a new code')
+      const invitesData = await accountsApi.getInvites()
+      setInvites(invitesData)
+    } catch {
+      toast.error('Failed to resend invite')
+    } finally {
+      setResendingId(null)
+    }
+  }
+
   const handleRemoveMember = async (userId: string) => {
     try {
       await accountsApi.removeMember(userId)
@@ -433,12 +449,28 @@ export function AccountSettingsPage() {
                         <div>
                           <p className="text-sm text-white">{invite.email}</p>
                           <p className="text-xs text-white/40">
-                            Expires {new Date(invite.expires_at).toLocaleDateString()}
+                            {invite.expires_at
+                              ? `Expires ${new Date(invite.expires_at).toLocaleDateString()}`
+                              : 'No expiration'}
                           </p>
                         </div>
-                        <span className="rounded-full bg-white/10 px-2.5 py-0.5 text-xs text-white/70">
-                          {invite.role}
-                        </span>
+                        <div className="flex items-center gap-2">
+                          <span className="rounded-full bg-white/10 px-2.5 py-0.5 text-xs text-white/70">
+                            {invite.role}
+                          </span>
+                          <button
+                            onClick={() => handleResendInvite(invite.id)}
+                            disabled={resendingId === invite.id}
+                            className="text-white/40 hover:text-white disabled:opacity-50"
+                            title="Resend invite"
+                          >
+                            {resendingId === invite.id ? (
+                              <Loader2 className="h-4 w-4 animate-spin" />
+                            ) : (
+                              <RefreshCw className="h-4 w-4" />
+                            )}
+                          </button>
+                        </div>
                       </div>
                     ))}
                 </div>

frontend/src/pages/admin/InviteCodesPage.tsx

@@ -1,5 +1,5 @@
 import { useState, useEffect, useCallback } from 'react'
-import { Plus, Copy, Trash2, Ticket, Mail, MailCheck } from 'lucide-react'
+import { Plus, Copy, Trash2, Ticket, Mail, MailCheck, RefreshCw } from 'lucide-react'
 import { DataTable, PageHeader, StatusBadge, ActionMenu, EmptyState } from '@/components/admin'
 import type { Column } from '@/components/admin'
 import { Modal } from '@/components/common/Modal'
@@ -97,6 +97,16 @@ export function InviteCodesPage() {
     }
   }
 
+  const handleResend = async (code: string) => {
+    try {
+      const newInvite = await adminApi.resendInviteCode(code)
+      toast.success(`New code ${newInvite.code} sent to ${newInvite.email}`)
+      fetchCodes()
+    } catch {
+      toast.error('Failed to resend invite code')
+    }
+  }
+
   const inputClass = cn(
     'w-full rounded-md border border-white/10 bg-black/50 px-3 py-2 text-sm text-white',
     'placeholder:text-white/40 focus:outline-none focus:border-white/30 focus:ring-2 focus:ring-white/20'
@@ -183,6 +193,11 @@ export function InviteCodesPage() {
             icon: <Copy className="h-4 w-4" />,
             onClick: () => handleCopy(c.code),
           },
+          ...(c.is_valid && c.email ? [{
+            label: 'Resend',
+            icon: <RefreshCw className="h-4 w-4" />,
+            onClick: () => handleResend(c.code),
+          }] : []),
           ...(!c.is_used ? [{
             label: 'Delete',
             icon: <Trash2 className="h-4 w-4" />,