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/server/routers/file.ts

@@ -22,7 +22,7 @@ export const fileRouter = router({
       })
     )
     .query(async ({ ctx, input }) => {
-      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER', 'AWARD_MASTER'].includes(ctx.user.role)
+      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER'].includes(ctx.user.role)
 
       if (!isAdminOrObserver) {
         const file = await ctx.prisma.projectFile.findFirst({
@@ -321,7 +321,7 @@ export const fileRouter = router({
       roundId: z.string().optional(),
     }))
     .query(async ({ ctx, input }) => {
-      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER', 'AWARD_MASTER'].includes(ctx.user.role)
+      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER'].includes(ctx.user.role)
 
       if (!isAdminOrObserver) {
         const [juryAssignment, mentorAssignment, teamMembership] = await Promise.all([
@@ -393,7 +393,7 @@ export const fileRouter = router({
       roundId: z.string(),
     }))
     .query(async ({ ctx, input }) => {
-      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER', 'AWARD_MASTER'].includes(ctx.user.role)
+      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER'].includes(ctx.user.role)
 
       if (!isAdminOrObserver) {
         const [juryAssignment, mentorAssignment, teamMembership] = await Promise.all([
@@ -716,7 +716,7 @@ export const fileRouter = router({
       })
     )
     .query(async ({ ctx, input }) => {
-      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER', 'AWARD_MASTER'].includes(ctx.user.role)
+      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER'].includes(ctx.user.role)
 
       // For non-admin/observer callers, mirror the per-round scope used by
       // file.getDownloadUrl: a juror assigned to round N may only pull URLs