Integrate special award eligibility into AI filtering pass

Single AI call now evaluates both screening criteria AND award eligibility.
Awards with useAiEligibility + criteriaText are appended to the system prompt,
AI returns award_matches per project, results auto-populate AwardEligibility
and auto-shortlist top-N. Re-running filtering clears and re-evaluates awards.

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

src/components/admin/round/filtering-dashboard.tsx

@@ -1915,7 +1915,7 @@ function AwardTracksSection({ competitionId, roundId }: { competitionId: string;
           Special Award Tracks
         </CardTitle>
         <CardDescription>
-          Evaluate passed projects against special award criteria and manage shortlists
+          Award eligibility is evaluated automatically during AI filtering. Use Run Eligibility to re-evaluate.
         </CardDescription>
       </CardHeader>
       <CardContent className="space-y-3">