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/files/bulk-download/route.ts

@@ -0,0 +1,124 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { auth } from '@/lib/auth'
+import { prisma } from '@/lib/prisma'
+import { getPresignedUrl, BUCKET_NAME } from '@/lib/minio'
+
+export async function POST(request: NextRequest): Promise<NextResponse> {
+  const session = await auth()
+
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+
+  try {
+    const body = await request.json()
+    const { projectId, fileIds } = body as {
+      projectId?: string
+      fileIds?: string[]
+    }
+
+    if (!projectId || !fileIds || !Array.isArray(fileIds) || fileIds.length === 0) {
+      return NextResponse.json(
+        { error: 'projectId and fileIds array are required' },
+        { status: 400 }
+      )
+    }
+
+    const userId = session.user.id
+    const userRole = session.user.role
+
+    // Authorization: must be admin or assigned jury/mentor for this project
+    const isAdmin = userRole === 'SUPER_ADMIN' || userRole === 'PROGRAM_ADMIN'
+
+    if (!isAdmin) {
+      // Check if user is assigned as jury
+      const juryAssignment = await prisma.assignment.findFirst({
+        where: {
+          userId,
+          projectId,
+        },
+      })
+
+      // Check if user is assigned as mentor
+      const mentorAssignment = await prisma.mentorAssignment.findFirst({
+        where: {
+          mentorId: userId,
+          projectId,
+        },
+      })
+
+      if (!juryAssignment && !mentorAssignment) {
+        return NextResponse.json(
+          { error: 'You do not have access to this project\'s files' },
+          { status: 403 }
+        )
+      }
+    }
+
+    // Fetch file metadata from DB
+    const files = await prisma.projectFile.findMany({
+      where: {
+        id: { in: fileIds },
+        projectId,
+      },
+      select: {
+        id: true,
+        fileName: true,
+        objectKey: true,
+        mimeType: true,
+        size: true,
+      },
+    })
+
+    if (files.length === 0) {
+      return NextResponse.json(
+        { error: 'No matching files found' },
+        { status: 404 }
+      )
+    }
+
+    // Generate signed download URLs for each file
+    const downloadUrls = await Promise.all(
+      files.map(async (file) => {
+        try {
+          const downloadUrl = await getPresignedUrl(
+            BUCKET_NAME,
+            file.objectKey,
+            'GET',
+            3600 // 1 hour expiry for bulk downloads
+          )
+
+          return {
+            id: file.id,
+            fileName: file.fileName,
+            mimeType: file.mimeType,
+            size: file.size,
+            downloadUrl,
+          }
+        } catch (error) {
+          console.error(`[BulkDownload] Failed to get URL for file ${file.id}:`, error)
+          return {
+            id: file.id,
+            fileName: file.fileName,
+            mimeType: file.mimeType,
+            size: file.size,
+            downloadUrl: null,
+            error: 'Failed to generate download URL',
+          }
+        }
+      })
+    )
+
+    return NextResponse.json({
+      projectId,
+      files: downloadUrls,
+      expiresIn: 3600,
+    })
+  } catch (error) {
+    console.error('[BulkDownload] Error:', error)
+    return NextResponse.json(
+      { error: 'Internal server error' },
+      { status: 500 }
+    )
+  }
+}