feat: ranking in-progress indicator persists across all admin users

- Create snapshot with status RUNNING before AI call starts
- Update to COMPLETED/FAILED when done
- Dashboard derives rankingInProgress from server snapshot status
- All admins see the spinner, not just the one who triggered it
- Poll snapshots every 3s so progress updates appear quickly

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

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

@@ -274,11 +274,17 @@ export function RankingDashboard({ competitionId: _competitionId, roundId }: Ran
   // ─── tRPC queries ─────────────────────────────────────────────────────────
   const { data: snapshots, isLoading: snapshotsLoading } = trpc.ranking.listSnapshots.useQuery(
     { roundId },
-    { refetchInterval: 30_000 },
+    // Poll every 3s so all admins see ranking progress/completion quickly
+    { refetchInterval: 3_000 },
   )
 
-  const latestSnapshotId = snapshots?.[0]?.id ?? null
-  const latestSnapshot = snapshots?.[0] ?? null
+  // Derive ranking-in-progress from server state (visible to ALL admins)
+  const rankingInProgress = snapshots?.[0]?.status === 'RUNNING'
+
+  // Find the latest COMPLETED snapshot (skip RUNNING/FAILED)
+  const latestCompleted = snapshots?.find((s) => s.status === 'COMPLETED')
+  const latestSnapshotId = latestCompleted?.id ?? null
+  const latestSnapshot = latestCompleted ?? null
 
   const { data: snapshot, isLoading: snapshotLoading } = trpc.ranking.getSnapshot.useQuery(
     { snapshotId: latestSnapshotId! },
@@ -322,20 +328,16 @@ export function RankingDashboard({ competitionId: _competitionId, roundId }: Ran
     onError: (err) => toast.error(`Failed to save: ${err.message}`),
   })
 
-  const [rankingInProgress, setRankingInProgress] = useState(false)
-
   const triggerRankMutation = trpc.ranking.triggerAutoRank.useMutation({
-    onMutate: () => setRankingInProgress(true),
     onSuccess: () => {
       toast.success('Ranking complete!')
       initialized.current = false // allow re-init on next snapshot load
       void utils.ranking.listSnapshots.invalidate({ roundId })
       void utils.ranking.getSnapshot.invalidate()
-      setRankingInProgress(false)
     },
     onError: (err) => {
       toast.error(err.message)
-      setRankingInProgress(false)
+      void utils.ranking.listSnapshots.invalidate({ roundId })
     },
   })
 

src/server/routers/ranking.ts

@@ -278,22 +278,32 @@ export const rankingRouter = router({
         })
       }
 
-      const result = await aiQuickRank(criteriaText, roundId, ctx.prisma, ctx.user.id)
-
-      // Embed weights alongside rules for audit
-      const criteriaWeights = config.criteriaWeights ?? undefined
-      const parsedRulesWithWeights = { rules: result.parsedRules, weights: criteriaWeights } as unknown as Prisma.InputJsonValue
+      // Create a RUNNING snapshot so all admins see the in-progress indicator
       const snapshot = await ctx.prisma.rankingSnapshot.create({
         data: {
           roundId,
           triggeredById: ctx.user.id,
           triggerType: 'MANUAL',
           criteriaText,
+          parsedRulesJson: {} as Prisma.InputJsonValue,
+          mode: 'QUICK',
+          status: 'RUNNING',
+        },
+      })
+
+      try {
+        const result = await aiQuickRank(criteriaText, roundId, ctx.prisma, ctx.user.id)
+
+        // Embed weights alongside rules for audit
+        const criteriaWeights = config.criteriaWeights ?? undefined
+        const parsedRulesWithWeights = { rules: result.parsedRules, weights: criteriaWeights } as unknown as Prisma.InputJsonValue
+        await ctx.prisma.rankingSnapshot.update({
+          where: { id: snapshot.id },
+          data: {
+            status: 'COMPLETED',
             parsedRulesJson: parsedRulesWithWeights,
             startupRankingJson: result.startup.rankedProjects as unknown as Prisma.InputJsonValue,
             conceptRankingJson: result.concept.rankedProjects as unknown as Prisma.InputJsonValue,
-          mode: 'QUICK',
-          status: 'COMPLETED',
           },
         })
 
@@ -309,6 +319,14 @@ export const rankingRouter = router({
         })
 
         return { snapshotId: snapshot.id, startup: result.startup, concept: result.concept }
+      } catch (err) {
+        // Mark snapshot as FAILED so the indicator clears
+        await ctx.prisma.rankingSnapshot.update({
+          where: { id: snapshot.id },
+          data: { status: 'FAILED' },
+        })
+        throw err
+      }
     }),
 
   /**