feat: semi-finalist tracker dashboard, account reminders, search + UX fixes

- Add getSemiFinalistStats query with per-category/per-award breakdown
- Add sendAccountReminders mutation with invite token generation and dedup
- Add SemiFinalistTracker dashboard widget with progress bars and remind buttons
- Add ACCOUNT_REMINDER email template
- Extend project search to match team member name/email (7 locations)
- Fix Passed count deduplication: count distinct projects, not round-state rows
- Fix role switcher: visible pills above user section, auto-refresh session on mount

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

src/components/layouts/admin-sidebar.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { useState } from 'react'
+import { useState, useEffect } from 'react'
 import Link from 'next/link'
 import type { Route } from 'next'
 import { usePathname } from 'next/navigation'
@@ -164,13 +164,21 @@ const ROLE_SWITCH_OPTIONS: Record<string, { label: string; path: string; icon: t
 export function AdminSidebar({ user }: AdminSidebarProps) {
   const pathname = usePathname()
   const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false)
-  const { data: session, status: sessionStatus } = useSession()
+  const { data: session, status: sessionStatus, update: updateSession } = useSession()
   const isAuthenticated = sessionStatus === 'authenticated'
   const { data: avatarUrl } = trpc.avatar.getUrl.useQuery(undefined, {
     enabled: isAuthenticated,
   })
   const { currentEdition } = useEdition()
 
+  // Auto-refresh session on mount to pick up role changes without requiring re-login
+  useEffect(() => {
+    if (isAuthenticated) {
+      updateSession()
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [isAuthenticated])
+
   const isSuperAdmin = user.role === 'SUPER_ADMIN'
   const roleLabel = roleLabels[user.role || ''] || 'User'
 
@@ -307,6 +315,26 @@ export function AdminSidebar({ user }: AdminSidebarProps) {
           )}
         </nav>
 
+        {/* Role Switcher — visible above user section */}
+        {switchableRoles.length > 0 && (
+          <div className="border-t px-3 py-2">
+            <p className="mb-1.5 flex items-center gap-1.5 text-[10px] font-semibold uppercase tracking-wider text-muted-foreground/60">
+              <ArrowRightLeft className="h-3 w-3" />
+              Switch View
+            </p>
+            <div className="flex flex-wrap gap-1.5">
+              {switchableRoles.map(([, opt]) => (
+                <Link key={opt.path} href={opt.path as Route} onClick={() => setIsMobileMenuOpen(false)}>
+                  <Button size="sm" variant="outline" className="h-7 gap-1.5 px-2.5 text-xs">
+                    <opt.icon className="h-3 w-3" />
+                    {opt.label}
+                  </Button>
+                </Link>
+              ))}
+            </div>
+          </div>
+        )}
+
         {/* User Profile Section */}
         <div className="border-t p-3">
           <DropdownMenu>