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/app/(admin)/admin/dashboard-content.tsx

@@ -35,6 +35,7 @@ import { ActivityFeed } from '@/components/dashboard/activity-feed'
 import { CategoryBreakdown } from '@/components/dashboard/category-breakdown'
 import { DashboardSkeleton } from '@/components/dashboard/dashboard-skeleton'
 import { RecentEvaluations } from '@/components/dashboard/recent-evaluations'
+import { SemiFinalistTracker } from '@/components/dashboard/semi-finalist-tracker'
 
 type DashboardContentProps = {
   editionId: string
@@ -125,6 +126,10 @@ export function DashboardContent({ editionId, sessionName }: DashboardContentPro
     { limit: 8 },
     { enabled: !!editionId, refetchInterval: 5_000 }
   )
+  const { data: semiFinalistStats } = trpc.dashboard.getSemiFinalistStats.useQuery(
+    { editionId },
+    { enabled: !!editionId, refetchInterval: 60_000 }
+  )
 
   if (isLoading) {
     return <DashboardSkeleton />
@@ -271,7 +276,18 @@ export function DashboardContent({ editionId, sessionName }: DashboardContentPro
             <SmartActions actions={nextActions} />
           </AnimatedCard>
 
-          <AnimatedCard index={6}>
+          {semiFinalistStats && semiFinalistStats.byCategory.length > 0 && (
+            <AnimatedCard index={6}>
+              <SemiFinalistTracker
+                byCategory={semiFinalistStats.byCategory}
+                byAward={semiFinalistStats.byAward}
+                unactivatedProjects={semiFinalistStats.unactivatedProjects}
+                editionId={editionId}
+              />
+            </AnimatedCard>
+          )}
+
+          <AnimatedCard index={7}>
             <ActivityFeed activity={liveActivity ?? recentActivity} />
           </AnimatedCard>
         </div>
@@ -280,12 +296,12 @@ export function DashboardContent({ editionId, sessionName }: DashboardContentPro
       {/* Bottom Full Width */}
       <div className="grid gap-6 lg:grid-cols-12">
         <div className="lg:col-span-8">
-          <AnimatedCard index={7}>
+          <AnimatedCard index={8}>
             <GeographicSummaryCard programId={editionId} />
           </AnimatedCard>
         </div>
         <div className="lg:col-span-4">
-          <AnimatedCard index={8}>
+          <AnimatedCard index={9}>
             <CategoryBreakdown
               categories={categoryBreakdown}
               issues={oceanIssueBreakdown}