refactor(awards): remove AWARD_MASTER role, fold features into jury chair flow

The AWARD_MASTER role split sponsor jurors into a parallel UI that hid
project files (only showed when the award was anchored to an evaluation
round) and duplicated the jury voting path with no real difference in
authority — tie-break and finalize were already governed by AwardJuror.isChair
regardless of the user's global role. Inviting a juror via the award page
defaulted to AWARD_MASTER, randomly fragmenting jury panels.

This collapses the role into JURY_MEMBER + isChair:

- specialAward.getMyAwardDetail now returns evaluation scores, chair
  visibility into other jurors' votes, and juror roster
- specialAward.submitVote accepts an optional justification per vote
- specialAward.confirmWinner moves from awardMasterProcedure to
  protectedProcedure (juror+chair check inside)
- bulkInviteJurors creates JURY_MEMBER accounts and, when the award has
  a juryGroupId, also adds them to that JuryGroup so they appear on
  the round-page jury panel
- jury award page renders justification, eval-score badges, and a
  chair tools panel with vote tally + finalize-winner CTA
- juryGroup.list includes attached SpecialAwards; the jury-list UI
  shows a trophy pill alongside round pills
- (award-master) route group, awardMasterProcedure, AWARD_MASTER role
  enum value, and AWARD_MASTER_DECISION decisionMode are deleted
- migration demotes any residual AWARD_MASTER users to JURY_MEMBER and
  recreates the UserRole enum without the value

Coup de Coeur on prod: Didier (the sponsor juror added today as
AWARD_MASTER by the buggy invite form) was migrated to JURY_MEMBER and
attached to the existing "Coup de Coeur" JuryGroup; the SpecialAward
itself was linked to that group (juryGroupId was NULL).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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

@@ -97,7 +97,6 @@ const roleColors: Record<string, 'default' | 'outline' | 'secondary'> = {
   PROGRAM_ADMIN: 'default',
   SUPER_ADMIN: 'default',
   APPLICANT: 'secondary',
-  AWARD_MASTER: 'outline',
   AUDIENCE: 'outline',
 }
 
@@ -154,7 +153,7 @@ export default function MemberDetailPage() {
 
   const handleSave = async () => {
     try {
-      const allRoles = [role, ...additionalRoles.filter((r) => r !== role)] as Array<'SUPER_ADMIN' | 'PROGRAM_ADMIN' | 'AWARD_MASTER' | 'JURY_MEMBER' | 'MENTOR' | 'OBSERVER' | 'APPLICANT' | 'AUDIENCE'>
+      const allRoles = [role, ...additionalRoles.filter((r) => r !== role)] as Array<'SUPER_ADMIN' | 'PROGRAM_ADMIN' | 'JURY_MEMBER' | 'MENTOR' | 'OBSERVER' | 'APPLICANT' | 'AUDIENCE'>
       await updateUser.mutateAsync({
         id: userId,
         email: email || undefined,
@@ -622,7 +621,6 @@ export default function MemberDetailPage() {
                         <SelectItem value="MENTOR">Mentor</SelectItem>
                         <SelectItem value="OBSERVER">Observer</SelectItem>
                         <SelectItem value="APPLICANT">Applicant</SelectItem>
-                        <SelectItem value="AWARD_MASTER">Award Master</SelectItem>
                         <SelectItem value="AUDIENCE">Audience</SelectItem>
                       </SelectContent>
                     </Select>
@@ -633,7 +631,7 @@ export default function MemberDetailPage() {
                       Grant additional dashboard access beyond the primary role
                     </p>
                     <div className="grid grid-cols-2 gap-2">
-                      {(['JURY_MEMBER', 'OBSERVER', 'MENTOR', 'AWARD_MASTER'] as const)
+                      {(['JURY_MEMBER', 'OBSERVER', 'MENTOR'] as const)
                         .filter((r) => r !== role)
                         .map((r) => (
                           <label key={r} className="flex items-center gap-2 text-sm cursor-pointer">