feat: round finalization with ranking-based outcomes + award pool notifications

- processRoundClose EVALUATION uses ranking scores + advanceMode config
  (threshold vs count) to auto-set proposedOutcome instead of defaulting all to PASSED
- Advancement emails generate invite tokens for passwordless users with
  "Create Your Account" CTA; rejection emails have no link
- Finalization UI shows account stats (invite vs dashboard link counts)
- Fixed getFinalizationSummary ranking query (was using non-existent rankingsJson)
- New award pool notification system: getAwardSelectionNotificationTemplate email,
  notifyEligibleProjects mutation with invite token generation,
  "Notify Pool" button on award detail page with custom message dialog

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

src/components/applicant/mentoring-request-card.tsx

@@ -0,0 +1,133 @@
+'use client'
+
+import { useState, useEffect } from 'react'
+import { trpc } from '@/lib/trpc/client'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { Button } from '@/components/ui/button'
+import { Badge } from '@/components/ui/badge'
+import { MessageSquare, Clock, CheckCircle, XCircle } from 'lucide-react'
+import { toast } from 'sonner'
+
+interface MentoringRequestCardProps {
+  projectId: string
+  roundId: string
+  roundName: string
+}
+
+export function MentoringRequestCard({ projectId, roundId, roundName }: MentoringRequestCardProps) {
+  const [timeLeft, setTimeLeft] = useState('')
+
+  const { data: status, isLoading } = trpc.applicant.getMentoringRequestStatus.useQuery(
+    { projectId, roundId },
+    { refetchInterval: 60_000 },
+  )
+
+  const utils = trpc.useUtils()
+  const requestMutation = trpc.applicant.requestMentoring.useMutation({
+    onSuccess: (data) => {
+      toast.success(data.requesting ? 'Mentoring requested' : 'Mentoring request cancelled')
+      utils.applicant.getMentoringRequestStatus.invalidate({ projectId, roundId })
+      utils.applicant.getMyDashboard.invalidate()
+    },
+    onError: (error) => toast.error(error.message),
+  })
+
+  // Countdown timer
+  useEffect(() => {
+    if (!status?.deadline) return
+    const update = () => {
+      const now = new Date()
+      const deadline = new Date(status.deadline!)
+      const diff = deadline.getTime() - now.getTime()
+      if (diff <= 0) {
+        setTimeLeft('Expired')
+        return
+      }
+      const days = Math.floor(diff / (1000 * 60 * 60 * 24))
+      const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60))
+      const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60))
+      if (days > 0) setTimeLeft(`${days}d ${hours}h remaining`)
+      else if (hours > 0) setTimeLeft(`${hours}h ${minutes}m remaining`)
+      else setTimeLeft(`${minutes}m remaining`)
+    }
+    update()
+    const interval = setInterval(update, 60_000)
+    return () => clearInterval(interval)
+  }, [status?.deadline])
+
+  if (isLoading || !status?.available) return null
+
+  return (
+    <Card>
+      <CardHeader className="pb-3">
+        <CardTitle className="flex items-center gap-2 text-base">
+          <MessageSquare className="h-5 w-5" />
+          Mentoring — {roundName}
+        </CardTitle>
+      </CardHeader>
+      <CardContent className="space-y-4">
+        {status.requested ? (
+          <div className="flex items-start gap-3">
+            <CheckCircle className="h-5 w-5 text-green-500 mt-0.5 shrink-0" />
+            <div>
+              <p className="text-sm font-medium">Mentoring requested</p>
+              <p className="text-xs text-muted-foreground">
+                {status.requestedAt
+                  ? `Requested on ${new Date(status.requestedAt).toLocaleDateString()}`
+                  : 'Awaiting mentor assignment'}
+              </p>
+            </div>
+          </div>
+        ) : (
+          <div className="flex items-start gap-3">
+            <XCircle className="h-5 w-5 text-muted-foreground mt-0.5 shrink-0" />
+            <div>
+              <p className="text-sm font-medium">Not requesting mentoring</p>
+              <p className="text-xs text-muted-foreground">
+                You will advance automatically without a mentoring period.
+              </p>
+            </div>
+          </div>
+        )}
+
+        {/* Deadline info */}
+        {status.deadline && (
+          <div className="flex items-center gap-2 text-sm">
+            <Clock className="h-4 w-4 text-muted-foreground" />
+            <span className="text-muted-foreground">Request window:</span>
+            {status.canStillRequest ? (
+              <Badge variant="outline" className="text-amber-600 border-amber-300">
+                {timeLeft}
+              </Badge>
+            ) : (
+              <Badge variant="secondary">Closed</Badge>
+            )}
+          </div>
+        )}
+
+        {/* Action button */}
+        {status.canStillRequest && (
+          <Button
+            variant={status.requested ? 'outline' : 'default'}
+            size="sm"
+            className="w-full"
+            onClick={() => requestMutation.mutate({ projectId, roundId, requesting: !status.requested })}
+            disabled={requestMutation.isPending}
+          >
+            {requestMutation.isPending
+              ? 'Updating...'
+              : status.requested
+                ? 'Cancel Mentoring Request'
+                : 'Request Mentoring'}
+          </Button>
+        )}
+
+        {!status.canStillRequest && (
+          <p className="text-xs text-muted-foreground text-center">
+            The mentoring request window has closed.
+          </p>
+        )}
+      </CardContent>
+    </Card>
+  )
+}