Add jury assignment transfer, cap redistribution, and learning hub overhaul

- Add getTransferCandidates/transferAssignments procedures for targeted
  assignment moves between jurors with TOCTOU guards and audit logging
- Add getOverCapPreview/redistributeOverCap for auto-redistributing
  assignments when a juror's cap is lowered below their current load
- Add TransferAssignmentsDialog (2-step: select projects, pick destinations)
- Extend InlineMemberCap with over-cap detection and redistribute banner
- Extend getReassignmentHistory to show ASSIGNMENT_TRANSFER and CAP_REDISTRIBUTE events
- Learning hub: replace ResourceType/CohortLevel enums with accessJson JSONB,
  add coverImageKey, resource detail pages for jury/mentor, shared renderer
- Migration: 20260221200000_learning_hub_overhaul

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

src/app/(mentor)/mentor/resources/page.tsx

@@ -1,38 +1,22 @@
 'use client'
 
 import { useState } from 'react'
+import type { Route } from 'next'
+import Link from 'next/link'
 import { trpc } from '@/lib/trpc/client'
 import {
   Card,
   CardContent,
 } from '@/components/ui/card'
-import { Badge } from '@/components/ui/badge'
 import { Button } from '@/components/ui/button'
 import { Skeleton } from '@/components/ui/skeleton'
 import {
   FileText,
-  Video,
-  Link as LinkIcon,
-  File,
   Download,
   ExternalLink,
   BookOpen,
 } from 'lucide-react'
 
-const resourceTypeIcons = {
-  PDF: FileText,
-  VIDEO: Video,
-  DOCUMENT: File,
-  LINK: LinkIcon,
-  OTHER: File,
-}
-
-const cohortColors: Record<string, string> = {
-  ALL: 'bg-gray-100 text-gray-800',
-  SEMIFINALIST: 'bg-blue-100 text-blue-800',
-  FINALIST: 'bg-purple-100 text-purple-800',
-}
-
 export default function MentorResourcesPage() {
   const [downloadingId, setDownloadingId] = useState<string | null>(null)
 
@@ -101,14 +85,14 @@ export default function MentorResourcesPage() {
       ) : (
         <div className="grid gap-4">
           {resources.map((resource) => {
-            const Icon = resourceTypeIcons[resource.resourceType as keyof typeof resourceTypeIcons] || File
             const isDownloading = downloadingId === resource.id
+            const hasContent = !!resource.contentJson
 
             return (
               <Card key={resource.id}>
                 <CardContent className="flex items-center gap-4 py-4">
                   <div className="flex h-10 w-10 items-center justify-center rounded-lg bg-muted shrink-0">
-                    <Icon className="h-5 w-5" />
+                    <FileText className="h-5 w-5" />
                   </div>
                   <div className="flex-1 min-w-0">
                     <h3 className="font-medium">{resource.title}</h3>
@@ -117,36 +101,39 @@ export default function MentorResourcesPage() {
                         {resource.description}
                       </p>
                     )}
-                    <div className="flex items-center gap-2 mt-2">
-                      <Badge variant="outline" className={cohortColors[resource.cohortLevel] || cohortColors.ALL}>
-                        {resource.cohortLevel}
-                      </Badge>
-                      <Badge variant="secondary">
-                        {resource.resourceType}
-                      </Badge>
-                    </div>
                   </div>
-                  <div>
-                    {resource.externalUrl ? (
+                  <div className="flex items-center gap-2">
+                    {hasContent && (
+                      <Link href={`/mentor/resources/${resource.id}` as Route}>
+                        <Button variant="outline" size="sm">
+                          <BookOpen className="mr-2 h-4 w-4" />
+                          Read
+                        </Button>
+                      </Link>
+                    )}
+                    {resource.externalUrl && (
                       <a
                         href={resource.externalUrl}
                         target="_blank"
                         rel="noopener noreferrer"
                       >
-                        <Button>
+                        <Button variant="outline" size="sm">
                           <ExternalLink className="mr-2 h-4 w-4" />
                           Open
                         </Button>
                       </a>
-                    ) : resource.objectKey ? (
+                    )}
+                    {resource.objectKey && (
                       <Button
+                        variant="outline"
+                        size="sm"
                         onClick={() => handleDownload(resource.id)}
                         disabled={isDownloading}
                       >
                         <Download className="mr-2 h-4 w-4" />
                         {isDownloading ? 'Loading...' : 'Download'}
                       </Button>
-                    ) : null}
+                    )}
                   </div>
                 </CardContent>
               </Card>