feat(finale): deliberation jury identity resolution, rankable projects, score-revision path, session sync

- submitVote resolves the caller's JuryGroupMember participant row server-side
  (was comparing JuryGroupMember id to User id — every juror got FORBIDDEN)
- getSessionWithVotes now includes category projects so the ranking form has
  data before finalize
- liveVoting.vote accepts any finale-ordered project (revision during
  deliberation); timed window still applies to the live project
- live.sendToScreens keeps LiveVotingSession.currentProjectId/status in sync

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/server/services/deliberation.ts

@@ -615,7 +615,7 @@ export async function getSessionWithVotes(
   sessionId: string,
   prisma: PrismaClient,
 ) {
-  return prisma.deliberationSession.findUnique({
+  const session = await prisma.deliberationSession.findUnique({
     where: { id: sessionId },
     include: {
       votes: {
@@ -648,6 +648,23 @@ export async function getSessionWithVotes(
       round: { select: { id: true, name: true, roundType: true } },
     },
   })
+  if (!session) return null
+
+  // Rankable projects: the round's projects in this session's category.
+  // (results are empty until finalize — the jury ranking form needs this list.)
+  const roundStates = await prisma.projectRoundState.findMany({
+    where: {
+      roundId: session.roundId,
+      project: { competitionCategory: session.category },
+    },
+    include: {
+      project: {
+        select: { id: true, title: true, teamName: true, competitionCategory: true },
+      },
+    },
+  })
+
+  return { ...session, projects: roundStates.map((rs) => rs.project) }
 }
 
 // ─── Internal Helpers ───────────────────────────────────────────────────────