feat: add Decision Mode dropdown to award edit page

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/(admin)/admin/awards/[id]/edit/page.tsx

@@ -58,6 +58,7 @@ export default function EditAwardPage({
   const [votingEndAt, setVotingEndAt] = useState('')
   const [evaluationRoundId, setEvaluationRoundId] = useState('')
   const [eligibilityMode, setEligibilityMode] = useState<'STAY_IN_MAIN' | 'SEPARATE_POOL'>('STAY_IN_MAIN')
+  const [decisionMode, setDecisionMode] = useState<'JURY_VOTE' | 'AWARD_MASTER_DECISION' | 'ADMIN_DECISION'>('JURY_VOTE')
 
   // Helper to format date for datetime-local input
   const formatDateForInput = (date: Date | string | null | undefined): string => {
@@ -80,6 +81,7 @@ export default function EditAwardPage({
       setVotingEndAt(formatDateForInput(award.votingEndAt))
       setEvaluationRoundId(award.evaluationRoundId || '')
       setEligibilityMode(award.eligibilityMode as 'STAY_IN_MAIN' | 'SEPARATE_POOL')
+      setDecisionMode((award.decisionMode as typeof decisionMode) || 'JURY_VOTE')
     }
   }, [award])
 
@@ -98,6 +100,7 @@ export default function EditAwardPage({
         votingEndAt: votingEndAt ? new Date(votingEndAt) : undefined,
         evaluationRoundId: evaluationRoundId || undefined,
         eligibilityMode,
+        decisionMode,
       })
       toast.success('Award updated')
       router.push(`/admin/awards/${awardId}`)
@@ -222,6 +225,23 @@ export default function EditAwardPage({
               </Select>
             </div>
 
+            <div className="space-y-2">
+              <Label htmlFor="decisionMode">Decision Mode</Label>
+              <Select
+                value={decisionMode}
+                onValueChange={(v) => setDecisionMode(v as typeof decisionMode)}
+              >
+                <SelectTrigger id="decisionMode">
+                  <SelectValue />
+                </SelectTrigger>
+                <SelectContent>
+                  <SelectItem value="JURY_VOTE">Jury Vote — tallied from all jurors</SelectItem>
+                  <SelectItem value="AWARD_MASTER_DECISION">Award Master — sponsor picks winner</SelectItem>
+                  <SelectItem value="ADMIN_DECISION">Admin Decision — admin selects winner</SelectItem>
+                </SelectContent>
+              </Select>
+            </div>
+
             {scoringMode === 'RANKED' && (
               <div className="space-y-2">
                 <Label htmlFor="maxPicks">Max Ranked Picks</Label>