Implement 15 platform features: digest, availability, templates, comparison, live voting SSE, file versioning, mentorship, messaging, analytics, drafts, webhooks, peer review, audit enhancements, i18n

Features implemented:
- F1: Email digest notifications with cron endpoint and per-user frequency
- F2: Jury availability windows and workload preferences in smart assignment
- F3: Round templates with save-from-round and CRUD management
- F4: Side-by-side project comparison view for jury members
- F5: Real-time voting dashboard with Server-Sent Events (SSE)
- F6: Live voting UX: QR codes, audience voting, tie-breaking, score animations
- F7: File versioning, inline preview, bulk download with presigned URLs
- F8: Mentor dashboard: milestones, private notes, activity tracking
- F9: Communication hub with broadcasts, templates, and recipient targeting
- F10: Advanced analytics: cross-round comparison, juror consistency, diversity metrics, PDF export
- F11: Applicant draft saving with magic link resume and cron cleanup
- F12: Webhook integration layer with HMAC signing, retry, and delivery logs
- F13: Peer review discussions with anonymized scores and threaded comments
- F14: Audit log enhancements: before/after diffs, session grouping, anomaly detection, retention
- F15: i18n foundation with next-intl (EN/FR), cookie-based locale, language switcher

Schema: 12 new models, field additions to User, Project, ProjectFile, LiveVotingSession, LiveVote, MentorAssignment, AuditLog, Program
New routers: roundTemplate, message, webhook (registered in _app.ts)
New services: email-digest, webhook-dispatcher
New cron endpoints: /api/cron/digest, /api/cron/draft-cleanup, /api/cron/audit-cleanup
New API routes: /api/live-voting/stream (SSE), /api/files/bulk-download

All features are admin-configurable via SystemSettings or per-model settingsJson fields.
Docker build verified successfully.

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

src/app/api/live-voting/stream/route.ts

@@ -0,0 +1,180 @@
+import { NextRequest } from 'next/server'
+import { prisma } from '@/lib/prisma'
+
+export const dynamic = 'force-dynamic'
+
+export async function GET(request: NextRequest): Promise<Response> {
+  const { searchParams } = new URL(request.url)
+  const sessionId = searchParams.get('sessionId')
+
+  if (!sessionId) {
+    return new Response(JSON.stringify({ error: 'sessionId is required' }), {
+      status: 400,
+      headers: { 'Content-Type': 'application/json' },
+    })
+  }
+
+  // Verify the session exists
+  const session = await prisma.liveVotingSession.findUnique({
+    where: { id: sessionId },
+    select: { id: true, status: true },
+  })
+
+  if (!session) {
+    return new Response(JSON.stringify({ error: 'Session not found' }), {
+      status: 404,
+      headers: { 'Content-Type': 'application/json' },
+    })
+  }
+
+  const encoder = new TextEncoder()
+
+  const stream = new ReadableStream({
+    async start(controller) {
+      // Track state for change detection
+      let lastVoteCount = -1
+      let lastProjectId: string | null = null
+      let lastStatus: string | null = null
+
+      const sendEvent = (event: string, data: unknown) => {
+        const payload = `event: ${event}\ndata: ${JSON.stringify(data)}\n\n`
+        controller.enqueue(encoder.encode(payload))
+      }
+
+      // Send initial connection event
+      sendEvent('connected', { sessionId, timestamp: new Date().toISOString() })
+
+      const poll = async () => {
+        try {
+          const currentSession = await prisma.liveVotingSession.findUnique({
+            where: { id: sessionId },
+            select: {
+              status: true,
+              currentProjectId: true,
+              currentProjectIndex: true,
+              votingEndsAt: true,
+            },
+          })
+
+          if (!currentSession) {
+            sendEvent('session_status', { status: 'DELETED' })
+            controller.close()
+            return false
+          }
+
+          // Check for status changes
+          if (lastStatus !== null && currentSession.status !== lastStatus) {
+            sendEvent('session_status', {
+              status: currentSession.status,
+              timestamp: new Date().toISOString(),
+            })
+          }
+          lastStatus = currentSession.status
+
+          // Check for project changes
+          if (
+            lastProjectId !== null &&
+            currentSession.currentProjectId !== lastProjectId
+          ) {
+            sendEvent('project_change', {
+              projectId: currentSession.currentProjectId,
+              projectIndex: currentSession.currentProjectIndex,
+              timestamp: new Date().toISOString(),
+            })
+          }
+          lastProjectId = currentSession.currentProjectId
+
+          // Check for vote updates on the current project
+          if (currentSession.currentProjectId) {
+            const voteCount = await prisma.liveVote.count({
+              where: {
+                sessionId,
+                projectId: currentSession.currentProjectId,
+              },
+            })
+
+            if (lastVoteCount !== -1 && voteCount !== lastVoteCount) {
+              // Get the latest vote info
+              const latestVotes = await prisma.liveVote.findMany({
+                where: {
+                  sessionId,
+                  projectId: currentSession.currentProjectId,
+                },
+                select: {
+                  score: true,
+                  isAudienceVote: true,
+                  votedAt: true,
+                },
+                orderBy: { votedAt: 'desc' },
+                take: 1,
+              })
+
+              const avgScore = await prisma.liveVote.aggregate({
+                where: {
+                  sessionId,
+                  projectId: currentSession.currentProjectId,
+                },
+                _avg: { score: true },
+                _count: true,
+              })
+
+              sendEvent('vote_update', {
+                projectId: currentSession.currentProjectId,
+                totalVotes: voteCount,
+                averageScore: avgScore._avg.score,
+                latestVote: latestVotes[0] || null,
+                timestamp: new Date().toISOString(),
+              })
+            }
+            lastVoteCount = voteCount
+          }
+
+          // Stop polling if session is completed
+          if (currentSession.status === 'COMPLETED') {
+            sendEvent('session_status', {
+              status: 'COMPLETED',
+              timestamp: new Date().toISOString(),
+            })
+            controller.close()
+            return false
+          }
+
+          return true
+        } catch (error) {
+          console.error('[SSE] Poll error:', error)
+          return true // Keep trying
+        }
+      }
+
+      // Initial poll to set baseline state
+      const shouldContinue = await poll()
+      if (!shouldContinue) return
+
+      // Poll every 2 seconds
+      const interval = setInterval(async () => {
+        const cont = await poll()
+        if (!cont) {
+          clearInterval(interval)
+        }
+      }, 2000)
+
+      // Clean up on abort
+      request.signal.addEventListener('abort', () => {
+        clearInterval(interval)
+        try {
+          controller.close()
+        } catch {
+          // Stream may already be closed
+        }
+      })
+    },
+  })
+
+  return new Response(stream, {
+    headers: {
+      'Content-Type': 'text/event-stream',
+      'Cache-Control': 'no-cache',
+      'Connection': 'keep-alive',
+    },
+  })
+}