Observer platform redesign Phase 4: migrate charts to Tremor, redesign all pages

- Migrate 9 chart components from Nivo to @tremor/react (BarChart, AreaChart, DonutChart, ScatterChart)
- Remove @nivo/*, @react-spring/web dependencies (45 packages removed)
- Redesign dashboard: 6 stat tiles, competition pipeline, score distribution, juror workload, activity feed
- Add new /observer/projects page with search, filters, sorting, pagination, CSV export
- Restructure reports page from 5 tabs to 3 (Progress, Jurors, Scores & Analytics) with per-tab CSV export
- Redesign project detail: breadcrumb nav, score card header, 3-tab layout (Overview/Evaluations/Files)
- Update loading skeletons to match new layouts

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

package.json

@@ -31,11 +31,6 @@
     "@hookform/resolvers": "^3.9.1",
     "@mantine/core": "^8.3.13",
     "@mantine/hooks": "^8.3.13",
-    "@nivo/bar": "^0.99.0",
-    "@nivo/core": "^0.99.0",
-    "@nivo/line": "^0.99.0",
-    "@nivo/pie": "^0.99.0",
-    "@nivo/scatterplot": "^0.99.0",
     "@notionhq/client": "^2.3.0",
     "@prisma/client": "^6.19.2",
     "@radix-ui/react-alert-dialog": "^1.1.4",
@@ -57,9 +52,9 @@
     "@radix-ui/react-tabs": "^1.1.2",
     "@radix-ui/react-toggle": "^1.1.10",
     "@radix-ui/react-tooltip": "^1.1.6",
-    "@react-spring/web": "^10.0.3",
     "@tailwindcss/postcss": "^4.1.18",
     "@tanstack/react-query": "^5.62.0",
+    "@tremor/react": "^3.18.7",
     "@trpc/client": "^11.0.0-rc.678",
     "@trpc/react-query": "^11.0.0-rc.678",
     "@trpc/server": "^11.0.0-rc.678",

src/app/(observer)/observer/loading.tsx

@@ -0,0 +1,88 @@
+import { Skeleton } from '@/components/ui/skeleton'
+import { Card, CardContent, CardHeader } from '@/components/ui/card'
+
+export default function ObserverLoading() {
+  return (
+    <div className="space-y-6">
+      {/* Header */}
+      <div className="flex items-center justify-between">
+        <div>
+          <Skeleton className="h-8 w-48" />
+          <Skeleton className="mt-2 h-4 w-32" />
+        </div>
+        <Skeleton className="h-10 w-[200px]" />
+      </div>
+
+      {/* 6 stat tiles */}
+      <div className="grid gap-4 grid-cols-2 md:grid-cols-3 lg:grid-cols-6">
+        {[...Array(6)].map((_, i) => (
+          <Card key={i}>
+            <CardContent className="p-4">
+              <div className="space-y-2">
+                <Skeleton className="h-4 w-16" />
+                <Skeleton className="h-8 w-12" />
+                <Skeleton className="h-3 w-20" />
+              </div>
+            </CardContent>
+          </Card>
+        ))}
+      </div>
+
+      {/* Pipeline */}
+      <Card>
+        <CardHeader>
+          <Skeleton className="h-5 w-32" />
+        </CardHeader>
+        <CardContent>
+          <div className="flex gap-4 overflow-hidden">
+            {[...Array(4)].map((_, i) => (
+              <Skeleton key={i} className="h-24 w-48 shrink-0 rounded-lg" />
+            ))}
+          </div>
+        </CardContent>
+      </Card>
+
+      {/* 3-col middle row */}
+      <div className="grid gap-4 lg:grid-cols-3">
+        {[...Array(3)].map((_, i) => (
+          <Card key={i}>
+            <CardHeader>
+              <Skeleton className="h-5 w-28" />
+            </CardHeader>
+            <CardContent>
+              <Skeleton className="h-[200px] w-full" />
+            </CardContent>
+          </Card>
+        ))}
+      </div>
+
+      {/* 2-col bottom row */}
+      <div className="grid gap-4 lg:grid-cols-2">
+        <Card>
+          <CardHeader>
+            <Skeleton className="h-5 w-32" />
+          </CardHeader>
+          <CardContent className="space-y-2">
+            {[...Array(5)].map((_, i) => (
+              <Skeleton key={i} className="h-10 w-full" />
+            ))}
+          </CardContent>
+        </Card>
+        <Card>
+          <CardHeader>
+            <Skeleton className="h-5 w-28" />
+          </CardHeader>
+          <CardContent className="space-y-3">
+            {[...Array(5)].map((_, i) => (
+              <div key={i} className="flex items-center gap-3">
+                <Skeleton className="h-3 w-3 rounded-full" />
+                <Skeleton className="h-4 flex-1" />
+                <Skeleton className="h-3 w-16" />
+              </div>
+            ))}
+          </CardContent>
+        </Card>
+      </div>
+    </div>
+  )
+}

src/app/(observer)/observer/projects/loading.tsx

@@ -0,0 +1,37 @@
+import { Skeleton } from '@/components/ui/skeleton'
+import { Card, CardContent, CardHeader } from '@/components/ui/card'
+
+export default function ObserverProjectsLoading() {
+  return (
+    <div className="space-y-6">
+      <div className="flex items-start justify-between gap-4">
+        <div className="space-y-2">
+          <Skeleton className="h-8 w-36" />
+          <Skeleton className="h-4 w-40" />
+        </div>
+        <Skeleton className="h-9 w-28" />
+      </div>
+
+      <Card>
+        <CardHeader className="pb-3">
+          <Skeleton className="h-5 w-14" />
+        </CardHeader>
+        <CardContent>
+          <div className="flex flex-col gap-2 sm:flex-row sm:items-center sm:gap-3">
+            <Skeleton className="h-10 flex-1" />
+            <Skeleton className="h-10 w-full sm:w-[220px]" />
+            <Skeleton className="h-10 w-full sm:w-[180px]" />
+          </div>
+        </CardContent>
+      </Card>
+
+      <Card>
+        <CardContent className="pt-6 space-y-2">
+          {[...Array(8)].map((_, i) => (
+            <Skeleton key={i} className="h-12 w-full" />
+          ))}
+        </CardContent>
+      </Card>
+    </div>
+  )
+}

src/app/(observer)/observer/projects/page.tsx

@@ -0,0 +1,8 @@
+import { ObserverProjectsContent } from '@/components/observer/observer-projects-content'
+
+export const metadata = { title: 'Observer — Projects' }
+export const dynamic = 'force-dynamic'
+
+export default function ObserverProjectsPage() {
+  return <ObserverProjectsContent />
+}

src/app/(observer)/observer/reports/loading.tsx

@@ -0,0 +1,57 @@
+import { Skeleton } from '@/components/ui/skeleton'
+import { Card, CardContent, CardHeader } from '@/components/ui/card'
+
+export default function ObserverReportsLoading() {
+  return (
+    <div className="space-y-6">
+      {/* Header */}
+      <div>
+        <Skeleton className="h-8 w-32" />
+        <Skeleton className="mt-2 h-4 w-56" />
+      </div>
+
+      {/* Round selector */}
+      <Skeleton className="h-10 w-full sm:w-[300px]" />
+
+      {/* Tab bar */}
+      <Skeleton className="h-10 w-80" />
+
+      {/* 3 stat tiles */}
+      <div className="grid gap-4 sm:grid-cols-3">
+        {[...Array(3)].map((_, i) => (
+          <Card key={i}>
+            <CardHeader className="space-y-0 pb-2">
+              <Skeleton className="h-4 w-20" />
+            </CardHeader>
+            <CardContent>
+              <Skeleton className="h-8 w-16" />
+              <Skeleton className="mt-2 h-2 w-full" />
+            </CardContent>
+          </Card>
+        ))}
+      </div>
+
+      {/* Chart skeleton */}
+      <Card>
+        <CardHeader>
+          <Skeleton className="h-5 w-48" />
+        </CardHeader>
+        <CardContent>
+          <Skeleton className="h-[300px] w-full" />
+        </CardContent>
+      </Card>
+
+      {/* Table skeleton */}
+      <Card>
+        <CardHeader>
+          <Skeleton className="h-5 w-36" />
+        </CardHeader>
+        <CardContent className="space-y-2">
+          {[...Array(5)].map((_, i) => (
+            <Skeleton key={i} className="h-12 w-full" />
+          ))}
+        </CardContent>
+      </Card>
+    </div>
+  )
+}

src/components/charts/chart-theme.ts

@@ -1,5 +1,3 @@
-import type { PartialTheme } from '@nivo/theming'
-
 // Brand colors from CLAUDE.md
 export const BRAND_DARK_BLUE = '#053d57'
 export const BRAND_RED = '#de0f1e'
@@ -73,50 +71,6 @@ function lerpColor(a: string, b: string, t: number): string {
   return `#${r.toString(16).padStart(2, '0')}${g.toString(16).padStart(2, '0')}${bl.toString(16).padStart(2, '0')}`
 }
 
-/**
- * Shared Nivo theme — brand fonts, clean grid, shadcn-style tooltips
- */
-export const nivoTheme: PartialTheme = {
-  background: 'transparent',
-  text: {
-    fontSize: 12,
-    fill: '#374151',
-    fontFamily: 'Montserrat, system-ui, sans-serif',
-  },
-  axis: {
-    domain: {
-      line: { stroke: '#e5e7eb', strokeWidth: 1 },
-    },
-    ticks: {
-      line: { stroke: '#e5e7eb', strokeWidth: 1 },
-      text: { fontSize: 11, fill: '#6b7280' },
-    },
-    legend: {
-      text: { fontSize: 13, fill: '#374151', fontWeight: 600 },
-    },
-  },
-  grid: {
-    line: { stroke: '#f3f4f6', strokeWidth: 1 },
-  },
-  legends: {
-    text: { fontSize: 12, fill: '#374151' },
-  },
-  labels: {
-    text: { fontSize: 12, fill: '#374151', fontWeight: 500 },
-  },
-  tooltip: {
-    container: {
-      background: '#ffffff',
-      color: '#1f2937',
-      fontSize: 12,
-      borderRadius: '8px',
-      boxShadow: '0 4px 12px rgba(0,0,0,0.1)',
-      padding: '8px 12px',
-      border: '1px solid #e5e7eb',
-    },
-  },
-}
-
 /**
  * Helper: get color for a status value from STATUS_COLORS
  * Falls back to a neutral gray

src/components/charts/criteria-scores.tsx

@@ -1,8 +1,8 @@
 'use client'
 
-import { ResponsiveBar } from '@nivo/bar'
+import { BarChart } from '@tremor/react'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { nivoTheme, scoreGradient } from './chart-theme'
+import { BRAND_TEAL } from './chart-theme'
 
 interface CriteriaScoreData {
   id: string
@@ -15,13 +15,6 @@ interface CriteriaScoresProps {
   data: CriteriaScoreData[]
 }
 
-type CriterionBarDatum = {
-  criterion: string
-  averageScore: number
-  fullName: string
-  count: number
-}
-
 export function CriteriaScoresChart({ data }: CriteriaScoresProps) {
   if (!data?.length) return null
 
@@ -30,12 +23,10 @@ export function CriteriaScoresChart({ data }: CriteriaScoresProps) {
       ? data.reduce((sum, d) => sum + d.averageScore, 0) / data.length
       : 0
 
-  const chartData: CriterionBarDatum[] = data.map((d) => ({
+  const chartData = data.map((d) => ({
     criterion:
       d.name.length > 25 ? d.name.substring(0, 25) + '...' : d.name,
-    averageScore: d.averageScore,
+    'Avg Score': parseFloat(d.averageScore.toFixed(2)),
-    fullName: d.name,
-    count: d.count,
   }))
 
   return (
@@ -49,55 +40,17 @@ export function CriteriaScoresChart({ data }: CriteriaScoresProps) {
         </CardTitle>
       </CardHeader>
       <CardContent>
-        <div style={{ height: '300px' }}>
+        <BarChart
-          <ResponsiveBar
+          data={chartData}
-            data={chartData}
+          index="criterion"
-            keys={['averageScore']}
+          categories={['Avg Score']}
-            indexBy="criterion"
+          colors={[BRAND_TEAL] as string[]}
-            theme={nivoTheme}
+          maxValue={10}
-            colors={(bar) =>
+          yAxisWidth={40}
-              scoreGradient(bar.data.averageScore as number)
+          showLegend={false}
-            }
+          className="h-[300px]"
-            valueScale={{ type: 'linear', max: 10 }}
+          rotateLabelX={{ angle: -45, xAxisHeight: 60 }}
-            borderRadius={4}
+        />
-            enableLabel={true}
-            label={(d) => {
-              const v = d.value
-              return v != null ? Number(v).toFixed(1) : ''
-            }}
-            labelSkipHeight={12}
-            labelTextColor="#ffffff"
-            axisBottom={{
-              tickRotation: -45,
-            }}
-            axisLeft={{
-              legend: 'Score',
-              legendPosition: 'middle',
-              legendOffset: -40,
-            }}
-            margin={{ top: 20, right: 20, bottom: 80, left: 50 }}
-            padding={0.25}
-            tooltip={({ data: rowData }) => (
-              <div
-                style={{
-                  background: '#ffffff',
-                  padding: '8px 12px',
-                  borderRadius: '8px',
-                  boxShadow: '0 4px 12px rgba(0,0,0,0.1)',
-                  border: '1px solid #e5e7eb',
-                  fontSize: 12,
-                }}
-              >
-                <strong>{rowData.fullName}</strong>
-                <br />
-                Average Score: {Number(rowData.averageScore).toFixed(2)}
-                <br />
-                Ratings: {rowData.count}
-              </div>
-            )}
-            animate={true}
-          />
-        </div>
       </CardContent>
     </Card>
   )

src/components/charts/cross-round-comparison.tsx

@@ -1,8 +1,8 @@
 'use client'
 
-import { ResponsiveBar } from '@nivo/bar'
+import { BarChart } from '@tremor/react'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { nivoTheme, BRAND_COLORS } from './chart-theme'
+import { BRAND_COLORS } from './chart-theme'
 
 interface StageComparison {
   roundId: string
@@ -36,16 +36,14 @@ export function CrossStageComparisonChart({
       round.roundName.length > 20
         ? round.roundName.slice(0, 20) + '...'
         : round.roundName,
-    projects: round.projectCount,
+    Projects: round.projectCount,
-    evaluations: round.evaluationCount,
+    Evaluations: round.evaluationCount,
-    completionRate: round.completionRate,
+    'Completion Rate': round.completionRate,
-    avgScore: round.averageScore
+    'Avg Score': round.averageScore
       ? parseFloat(round.averageScore.toFixed(2))
       : 0,
   }))
 
-  const sharedMargin = { top: 10, right: 10, bottom: 40, left: 40 }
-
   return (
     <Card>
       <CardHeader>
@@ -58,25 +56,16 @@ export function CrossStageComparisonChart({
               <CardTitle className="text-sm font-medium">Projects</CardTitle>
             </CardHeader>
             <CardContent className="pt-0">
-              <div style={{ height: '200px' }}>
+              <BarChart
-                <ResponsiveBar
+                data={baseData}
-                  data={baseData}
+                index="name"
-                  keys={['projects']}
+                categories={['Projects']}
-                  indexBy="name"
+                colors={[BRAND_COLORS[0]] as string[]}
-                  theme={nivoTheme}
+                showLegend={false}
-                  colors={[BRAND_COLORS[0]]}
+                yAxisWidth={40}
-                  borderRadius={4}
+                className="h-[200px]"
-                  enableLabel={true}
+                rotateLabelX={{ angle: -25, xAxisHeight: 40 }}
-                  labelSkipHeight={12}
+              />
-                  labelTextColor="#ffffff"
-                  margin={sharedMargin}
-                  padding={0.3}
-                  axisBottom={{
-                    tickRotation: -25,
-                  }}
-                  animate={true}
-                />
-              </div>
             </CardContent>
           </Card>
 
@@ -87,25 +76,16 @@ export function CrossStageComparisonChart({
               </CardTitle>
             </CardHeader>
             <CardContent className="pt-0">
-              <div style={{ height: '200px' }}>
+              <BarChart
-                <ResponsiveBar
+                data={baseData}
-                  data={baseData}
+                index="name"
-                  keys={['evaluations']}
+                categories={['Evaluations']}
-                  indexBy="name"
+                colors={[BRAND_COLORS[2]] as string[]}
-                  theme={nivoTheme}
+                showLegend={false}
-                  colors={[BRAND_COLORS[2]]}
+                yAxisWidth={40}
-                  borderRadius={4}
+                className="h-[200px]"
-                  enableLabel={true}
+                rotateLabelX={{ angle: -25, xAxisHeight: 40 }}
-                  labelSkipHeight={12}
+              />
-                  labelTextColor="#ffffff"
-                  margin={sharedMargin}
-                  padding={0.3}
-                  axisBottom={{
-                    tickRotation: -25,
-                  }}
-                  animate={true}
-                />
-              </div>
             </CardContent>
           </Card>
 
@@ -116,30 +96,18 @@ export function CrossStageComparisonChart({
               </CardTitle>
             </CardHeader>
             <CardContent className="pt-0">
-              <div style={{ height: '200px' }}>
+              <BarChart
-                <ResponsiveBar
+                data={baseData}
-                  data={baseData}
+                index="name"
-                  keys={['completionRate']}
+                categories={['Completion Rate']}
-                  indexBy="name"
+                colors={[BRAND_COLORS[1]] as string[]}
-                  theme={nivoTheme}
+                showLegend={false}
-                  colors={[BRAND_COLORS[1]]}
+                maxValue={100}
-                  valueScale={{ type: 'linear', max: 100 }}
+                yAxisWidth={40}
-                  borderRadius={4}
+                valueFormatter={(v) => `${v}%`}
-                  enableLabel={true}
+                className="h-[200px]"
-                  labelSkipHeight={12}
+                rotateLabelX={{ angle: -25, xAxisHeight: 40 }}
-                  labelTextColor="#ffffff"
+              />
-                  valueFormat={(v) => `${v}%`}
-                  margin={sharedMargin}
-                  padding={0.3}
-                  axisBottom={{
-                    tickRotation: -25,
-                  }}
-                  axisLeft={{
-                    format: (v) => `${v}%`,
-                  }}
-                  animate={true}
-                />
-              </div>
             </CardContent>
           </Card>
 
@@ -150,26 +118,17 @@ export function CrossStageComparisonChart({
               </CardTitle>
             </CardHeader>
             <CardContent className="pt-0">
-              <div style={{ height: '200px' }}>
+              <BarChart
-                <ResponsiveBar
+                data={baseData}
-                  data={baseData}
+                index="name"
-                  keys={['avgScore']}
+                categories={['Avg Score']}
-                  indexBy="name"
+                colors={[BRAND_COLORS[0]] as string[]}
-                  theme={nivoTheme}
+                showLegend={false}
-                  colors={[BRAND_COLORS[0]]}
+                maxValue={10}
-                  valueScale={{ type: 'linear', max: 10 }}
+                yAxisWidth={40}
-                  borderRadius={4}
+                className="h-[200px]"
-                  enableLabel={true}
+                rotateLabelX={{ angle: -25, xAxisHeight: 40 }}
-                  labelSkipHeight={12}
+              />
-                  labelTextColor="#ffffff"
-                  margin={sharedMargin}
-                  padding={0.3}
-                  axisBottom={{
-                    tickRotation: -25,
-                  }}
-                  animate={true}
-                />
-              </div>
             </CardContent>
           </Card>
         </div>

src/components/charts/diversity-metrics.tsx

@@ -1,10 +1,9 @@
 'use client'
 
-import { ResponsivePie } from '@nivo/pie'
+import { DonutChart, BarChart } from '@tremor/react'
-import { ResponsiveBar } from '@nivo/bar'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
 import { Badge } from '@/components/ui/badge'
-import { nivoTheme, BRAND_COLORS } from './chart-theme'
+import { BRAND_COLORS } from './chart-theme'
 
 interface DiversityData {
   total: number
@@ -49,10 +48,10 @@ export function DiversityMetricsChart({ data }: DiversityMetricsProps) {
     )
   }
 
-  // Top countries for pie chart (max 10, others grouped)
+  // Top countries for donut chart (max 10, others grouped)
   const topCountries = (data.byCountry || []).slice(0, 10)
   const otherCountries = (data.byCountry || []).slice(10)
-  const countryPieData = otherCountries.length > 0
+  const countryData = otherCountries.length > 0
     ? [...topCountries, {
         country: 'Others',
         count: otherCountries.reduce((sum, c) => sum + c.count, 0),
@@ -60,21 +59,19 @@ export function DiversityMetricsChart({ data }: DiversityMetricsProps) {
       }]
     : topCountries
 
-  const nivoPieData = countryPieData.map((c) => ({
+  const donutData = countryData.map((c) => ({
-    id: c.country === 'Others' ? 'Others' : c.country.toUpperCase(),
+    name: getCountryName(c.country),
-    label: getCountryName(c.country),
     value: c.count,
   }))
 
-  // Pre-format category and ocean issue data for display
+  const categoryData = (data.byCategory || []).slice(0, 10).map((c) => ({
-  const formattedCategories = (data.byCategory || []).slice(0, 10).map((c) => ({
     category: formatLabel(c.category),
-    count: c.count,
+    Count: c.count,
   }))
 
-  const formattedOceanIssues = (data.byOceanIssue || []).slice(0, 15).map((o) => ({
+  const oceanIssueData = (data.byOceanIssue || []).slice(0, 15).map((o) => ({
     issue: formatLabel(o.issue),
-    count: o.count,
+    Count: o.count,
   }))
 
   return (
@@ -114,45 +111,17 @@ export function DiversityMetricsChart({ data }: DiversityMetricsProps) {
             <CardTitle>Geographic Distribution</CardTitle>
           </CardHeader>
           <CardContent>
-            <div style={{ height: '400px' }}>
+            {donutData.length > 0 ? (
-              {nivoPieData.length > 0 ? <ResponsivePie
+              <DonutChart
-                data={nivoPieData}
+                data={donutData}
-                theme={nivoTheme}
+                category="value"
-                colors={[...BRAND_COLORS]}
+                index="name"
-                innerRadius={0.4}
+                colors={[...BRAND_COLORS] as string[]}
-                padAngle={0.5}
+                className="h-[400px]"
-                cornerRadius={3}
+              />
-                activeOuterRadiusOffset={8}
+            ) : (
-                margin={{ top: 40, right: 80, bottom: 80, left: 80 }}
+              <p className="text-muted-foreground text-center py-8">No geographic data</p>
-                enableArcLinkLabels={true}
+            )}
-                arcLinkLabelsSkipAngle={10}
-                arcLinkLabelsTextColor="#374151"
-                arcLinkLabelsThickness={2}
-                arcLinkLabelsColor={{ from: 'color' }}
-                enableArcLabels={true}
-                arcLabelsSkipAngle={10}
-                arcLabelsTextColor={{ from: 'color', modifiers: [['darker', 2]] }}
-                legends={[
-                  {
-                    anchor: 'bottom',
-                    direction: 'row',
-                    justify: false,
-                    translateX: 0,
-                    translateY: 56,
-                    itemsSpacing: 0,
-                    itemWidth: 100,
-                    itemHeight: 18,
-                    itemTextColor: '#374151',
-                    itemDirection: 'left-to-right',
-                    itemOpacity: 1,
-                    symbolSize: 12,
-                    symbolShape: 'circle',
-                  },
-                ]}
-              /> : (
-                <p className="text-muted-foreground text-center py-8">No geographic data</p>
-              )}
-            </div>
           </CardContent>
         </Card>
 
@@ -162,29 +131,17 @@ export function DiversityMetricsChart({ data }: DiversityMetricsProps) {
             <CardTitle>Competition Categories</CardTitle>
           </CardHeader>
           <CardContent>
-            {formattedCategories.length > 0 ? (
+            {categoryData.length > 0 ? (
-              <div style={{ height: '400px' }}>
+              <BarChart
-                <ResponsiveBar
+                data={categoryData}
-                  data={formattedCategories}
+                index="category"
-                  theme={nivoTheme}
+                categories={['Count']}
-                  keys={['count']}
+                colors={[BRAND_COLORS[0]] as string[]}
-                  indexBy="category"
+                layout="horizontal"
-                  layout="horizontal"
+                yAxisWidth={120}
-                  colors={[BRAND_COLORS[0]]}
+                showLegend={false}
-                  borderRadius={4}
+                className="h-[400px]"
-                  margin={{ top: 10, right: 30, bottom: 10, left: 120 }}
+              />
-                  padding={0.3}
-                  enableLabel={true}
-                  labelTextColor="#ffffff"
-                  enableGridX={true}
-                  enableGridY={false}
-                  axisBottom={null}
-                  axisLeft={{
-                    tickSize: 0,
-                    tickPadding: 8,
-                  }}
-                />
-              </div>
             ) : (
               <p className="text-muted-foreground text-center py-8">No category data</p>
             )}
@@ -193,38 +150,22 @@ export function DiversityMetricsChart({ data }: DiversityMetricsProps) {
       </div>
 
       {/* Ocean Issues */}
-      {formattedOceanIssues.length > 0 && (
+      {oceanIssueData.length > 0 && (
         <Card>
           <CardHeader>
             <CardTitle>Ocean Issues Addressed</CardTitle>
           </CardHeader>
           <CardContent>
-            <div style={{ height: '400px' }}>
+            <BarChart
-              <ResponsiveBar
+              data={oceanIssueData}
-                data={formattedOceanIssues}
+              index="issue"
-                theme={nivoTheme}
+              categories={['Count']}
-                keys={['count']}
+              colors={[BRAND_COLORS[2]] as string[]}
-                indexBy="issue"
+              showLegend={false}
-                layout="vertical"
+              yAxisWidth={40}
-                colors={[BRAND_COLORS[2]]}
+              className="h-[400px]"
-                borderRadius={4}
+              rotateLabelX={{ angle: -35, xAxisHeight: 80 }}
-                margin={{ top: 20, right: 30, bottom: 80, left: 40 }}
+            />
-                padding={0.3}
-                enableLabel={true}
-                labelTextColor="#ffffff"
-                enableGridX={false}
-                enableGridY={true}
-                axisBottom={{
-                  tickSize: 0,
-                  tickPadding: 8,
-                  tickRotation: -35,
-                }}
-                axisLeft={{
-                  tickSize: 0,
-                  tickPadding: 8,
-                }}
-              />
-            </div>
           </CardContent>
         </Card>
       )}

src/components/charts/evaluation-timeline.tsx

@@ -1,8 +1,8 @@
 'use client'
 
-import { ResponsiveLine } from '@nivo/line'
+import { AreaChart } from '@tremor/react'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { nivoTheme, BRAND_DARK_BLUE } from './chart-theme'
+import { BRAND_DARK_BLUE, BRAND_TEAL } from './chart-theme'
 
 interface TimelineDataPoint {
   date: string
@@ -17,26 +17,17 @@ interface EvaluationTimelineProps {
 export function EvaluationTimelineChart({ data }: EvaluationTimelineProps) {
   if (!data?.length) return null
 
-  const formattedData = data.map((d) => ({
-    ...d,
-    dateFormatted: new Date(d.date).toLocaleDateString('en-US', {
-      month: 'short',
-      day: 'numeric',
-    }),
-  }))
-
   const totalEvaluations =
     data.length > 0 ? data[data.length - 1].cumulative : 0
 
-  const lineData = [
+  const chartData = data.map((d) => ({
-    {
+    date: new Date(d.date).toLocaleDateString('en-US', {
-      id: 'Cumulative Evaluations',
+      month: 'short',
-      data: formattedData.map((d) => ({
+      day: 'numeric',
-        x: d.dateFormatted,
+    }),
-        y: d.cumulative,
+    Cumulative: d.cumulative,
-      })),
+    Daily: d.daily,
-    },
+  }))
-  ]
 
   return (
     <Card>
@@ -49,57 +40,16 @@ export function EvaluationTimelineChart({ data }: EvaluationTimelineProps) {
         </CardTitle>
       </CardHeader>
       <CardContent>
-        <div style={{ height: '300px' }}>
+        <AreaChart
-          <ResponsiveLine
+          data={chartData}
-            data={lineData}
+          index="date"
-            theme={nivoTheme}
+          categories={['Cumulative', 'Daily']}
-            colors={[BRAND_DARK_BLUE]}
+          colors={[BRAND_DARK_BLUE, BRAND_TEAL] as string[]}
-            enableArea={true}
+          curveType="monotone"
-            areaOpacity={0.1}
+          showGradient={true}
-            areaBaselineValue={0}
+          yAxisWidth={50}
-            curve="monotoneX"
+          className="h-[300px]"
-            pointSize={6}
+        />
-            pointColor={BRAND_DARK_BLUE}
-            pointBorderWidth={2}
-            pointBorderColor="#ffffff"
-            useMesh={true}
-            enableSlices={formattedData.length >= 2 ? 'x' : false}
-            sliceTooltip={({ slice }) => {
-              const point = slice.points[0]
-              if (!point) return null
-              const dataItem = formattedData.find(
-                (d) => d.dateFormatted === point.data.xFormatted
-              )
-              return (
-                <div
-                  style={{
-                    background: '#fff',
-                    padding: '8px 12px',
-                    border: '1px solid #e5e7eb',
-                    borderRadius: '8px',
-                    boxShadow: '0 4px 12px rgba(0,0,0,0.1)',
-                  }}
-                >
-                  <strong>{point.data.xFormatted}</strong>
-                  <div>Cumulative: {point.data.yFormatted}</div>
-                  {dataItem && <div>Daily: {dataItem.daily}</div>}
-                </div>
-              )
-            }}
-            margin={{ top: 20, right: 20, bottom: 50, left: 60 }}
-            axisBottom={{
-              tickRotation: -45,
-              legend: '',
-              legendOffset: 36,
-            }}
-            axisLeft={{
-              legend: 'Evaluations',
-              legendOffset: -50,
-              legendPosition: 'middle',
-            }}
-            yScale={{ type: 'linear', min: 0, max: 'auto' }}
-          />
-        </div>
       </CardContent>
     </Card>
   )

src/components/charts/juror-consistency.tsx

@@ -1,11 +1,6 @@
 'use client'
 
-import { ResponsiveScatterPlot } from '@nivo/scatterplot'
+import { ScatterChart } from '@tremor/react'
-import type {
-  ScatterPlotDatum,
-  ScatterPlotNodeProps,
-} from '@nivo/scatterplot'
-import { animated } from '@react-spring/web'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
 import { Badge } from '@/components/ui/badge'
 import {
@@ -17,7 +12,7 @@ import {
   TableRow,
 } from '@/components/ui/table'
 import { AlertTriangle } from 'lucide-react'
-import { nivoTheme, BRAND_DARK_BLUE, BRAND_RED } from './chart-theme'
+import { BRAND_DARK_BLUE, BRAND_RED } from './chart-theme'
 
 interface JurorMetric {
   userId: string
@@ -36,60 +31,6 @@ interface JurorConsistencyProps {
   }
 }
 
-interface JurorDatum extends ScatterPlotDatum {
-  x: number
-  y: number
-  name: string
-  evaluations: number
-  isOutlier: boolean
-}
-
-function CustomNode({
-  node,
-  style,
-  blendMode,
-  isInteractive,
-  onMouseEnter,
-  onMouseMove,
-  onMouseLeave,
-  onClick,
-}: ScatterPlotNodeProps<JurorDatum>) {
-  const fillColor = node.data.isOutlier ? BRAND_RED : BRAND_DARK_BLUE
-
-  return (
-    <animated.circle
-      cx={style.x}
-      cy={style.y}
-      r={style.size.to((s: number) => s / 2)}
-      fill={fillColor}
-      fillOpacity={0.7}
-      stroke={fillColor}
-      strokeWidth={1}
-      style={{ mixBlendMode: blendMode }}
-      onMouseEnter={
-        isInteractive && onMouseEnter
-          ? (event) => onMouseEnter(node, event)
-          : undefined
-      }
-      onMouseMove={
-        isInteractive && onMouseMove
-          ? (event) => onMouseMove(node, event)
-          : undefined
-      }
-      onMouseLeave={
-        isInteractive && onMouseLeave
-          ? (event) => onMouseLeave(node, event)
-          : undefined
-      }
-      onClick={
-        isInteractive && onClick
-          ? (event) => onClick(node, event)
-          : undefined
-      }
-    />
-  )
-}
-
 export function JurorConsistencyChart({ data }: JurorConsistencyProps) {
   if (!data?.jurors?.length) {
     return (
@@ -101,21 +42,17 @@ export function JurorConsistencyChart({ data }: JurorConsistencyProps) {
     )
   }
 
-  const scatterData = [
-    {
-      id: 'Jurors',
-      data: data.jurors.map((j) => ({
-        x: parseFloat(j.averageScore.toFixed(2)),
-        y: parseFloat(j.stddev.toFixed(2)),
-        name: j.name,
-        evaluations: j.evaluationCount,
-        isOutlier: j.isOutlier,
-      })),
-    },
-  ]
-
   const outlierCount = data.jurors.filter((j) => j.isOutlier).length
 
+  const scatterData = data.jurors.map((j) => ({
+    'Average Score': parseFloat(j.averageScore.toFixed(2)),
+    'Std Deviation': parseFloat(j.stddev.toFixed(2)),
+    category: j.isOutlier ? 'Outlier' : 'Normal',
+    name: j.name,
+    evaluations: j.evaluationCount,
+    size: Math.max(8, Math.min(20, j.evaluationCount * 2)),
+  }))
+
   return (
     <div className="space-y-6">
       {/* Scatter: Average Score vs Standard Deviation */}
@@ -134,60 +71,15 @@ export function JurorConsistencyChart({ data }: JurorConsistencyProps) {
           </CardTitle>
         </CardHeader>
         <CardContent>
-          <div style={{ height: '400px' }}>
+          <ScatterChart
-            <ResponsiveScatterPlot<JurorDatum>
+            data={scatterData}
-              data={scatterData}
+            x="Average Score"
-              theme={nivoTheme}
+            y="Std Deviation"
-              colors={[BRAND_DARK_BLUE]}
+            category="category"
-              xScale={{ type: 'linear', min: 0, max: 10 }}
+            size="size"
-              yScale={{ type: 'linear', min: 0, max: 'auto' }}
+            colors={[BRAND_DARK_BLUE, BRAND_RED] as string[]}
-              axisBottom={{
+            className="h-[400px]"
-                legend: 'Average Score',
+          />
-                legendPosition: 'middle',
-                legendOffset: 40,
-              }}
-              axisLeft={{
-                legend: 'Std Deviation',
-                legendPosition: 'middle',
-                legendOffset: -50,
-              }}
-              useMesh={true}
-              nodeSize={(node) =>
-                Math.max(8, Math.min(20, node.data.evaluations * 2))
-              }
-              nodeComponent={CustomNode}
-              margin={{ top: 20, right: 20, bottom: 60, left: 60 }}
-              tooltip={({ node }) => (
-                <div
-                  style={{
-                    background: '#fff',
-                    padding: '8px 12px',
-                    border: '1px solid #e5e7eb',
-                    borderRadius: '8px',
-                    boxShadow: '0 4px 12px rgba(0,0,0,0.1)',
-                  }}
-                >
-                  <strong>{node.data.name}</strong>
-                  <div>Avg Score: {node.data.x}</div>
-                  <div>Std Dev: {node.data.y}</div>
-                  <div>Evaluations: {node.data.evaluations}</div>
-                </div>
-              )}
-              markers={[
-                {
-                  axis: 'x',
-                  value: data.overallAverage,
-                  lineStyle: {
-                    stroke: BRAND_RED,
-                    strokeWidth: 2,
-                    strokeDasharray: '6 4',
-                  },
-                  legend: `Avg: ${data.overallAverage.toFixed(1)}`,
-                  legendPosition: 'top',
-                },
-              ]}
-            />
-          </div>
           <p className="text-xs text-muted-foreground mt-2 text-center">
             Dot size represents number of evaluations. Red dots indicate outlier
             jurors (2+ points from mean).

src/components/charts/juror-workload.tsx

@@ -1,8 +1,8 @@
 'use client'
 
-import { ResponsiveBar, type ComputedDatum } from '@nivo/bar'
+import { BarChart } from '@tremor/react'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { nivoTheme } from './chart-theme'
+import { BRAND_DARK_BLUE } from './chart-theme'
 
 interface JurorWorkloadData {
   id: string
@@ -16,14 +16,6 @@ interface JurorWorkloadProps {
   data: JurorWorkloadData[]
 }
 
-type WorkloadBarDatum = {
-  juror: string
-  completed: number
-  remaining: number
-  completionRate: number
-  fullName: string
-}
-
 export function JurorWorkloadChart({ data }: JurorWorkloadProps) {
   if (!data?.length) return null
 
@@ -36,12 +28,10 @@ export function JurorWorkloadChart({ data }: JurorWorkloadProps) {
     (a, b) => b.completionRate - a.completionRate,
   )
 
-  const chartData: WorkloadBarDatum[] = sortedData.map((d) => ({
+  const chartData = sortedData.map((d) => ({
     juror: d.name.length > 25 ? d.name.substring(0, 25) + '...' : d.name,
-    completed: d.completed,
+    Completed: d.completed,
-    remaining: d.assigned - d.completed,
+    Remaining: d.assigned - d.completed,
-    completionRate: d.completionRate,
-    fullName: d.name,
   }))
 
   return (
@@ -55,66 +45,17 @@ export function JurorWorkloadChart({ data }: JurorWorkloadProps) {
         </CardTitle>
       </CardHeader>
       <CardContent>
-        <div
+        <BarChart
+          data={chartData}
+          index="juror"
+          categories={['Completed', 'Remaining']}
+          colors={[BRAND_DARK_BLUE, '#e5e7eb'] as string[]}
+          layout="horizontal"
+          stack={true}
+          yAxisWidth={160}
+          className={`h-[${Math.max(300, data.length * 35)}px]`}
           style={{ height: `${Math.max(300, data.length * 35)}px` }}
-        >
+        />
-          <ResponsiveBar
-            data={chartData}
-            keys={['completed', 'remaining']}
-            indexBy="juror"
-            layout="horizontal"
-            theme={nivoTheme}
-            colors={['#053d57', '#e5e7eb']}
-            borderRadius={2}
-            enableLabel={true}
-            label={(d: ComputedDatum<WorkloadBarDatum>) => {
-              if (d.id === 'completed') {
-                return `${d.data.completionRate}%`
-              }
-              return ''
-            }}
-            labelSkipWidth={40}
-            labelTextColor={(d) => {
-              const datum = d as unknown as { data: ComputedDatum<WorkloadBarDatum> }
-              return datum.data.id === 'completed' ? '#ffffff' : '#374151'
-            }}
-            margin={{ top: 10, right: 30, bottom: 30, left: 160 }}
-            padding={0.25}
-            groupMode="stacked"
-            tooltip={({ id, value, data: rowData }) => (
-              <div
-                style={{
-                  background: '#ffffff',
-                  padding: '8px 12px',
-                  borderRadius: '8px',
-                  boxShadow: '0 4px 12px rgba(0,0,0,0.1)',
-                  border: '1px solid #e5e7eb',
-                  fontSize: 12,
-                }}
-              >
-                <strong>{rowData.fullName}</strong>
-                <br />
-                {id === 'completed' ? 'Completed' : 'Remaining'}: {value}
-                <br />
-                Completion: {rowData.completionRate}%
-              </div>
-            )}
-            legends={[
-              {
-                dataFrom: 'keys',
-                anchor: 'bottom',
-                direction: 'row',
-                translateY: 30,
-                itemsSpacing: 20,
-                itemWidth: 100,
-                itemHeight: 18,
-                symbolSize: 12,
-                symbolShape: 'square',
-              },
-            ]}
-            animate={true}
-          />
-        </div>
       </CardContent>
     </Card>
   )

src/components/charts/project-rankings.tsx

@@ -1,8 +1,8 @@
 'use client'
 
-import { ResponsiveBar } from '@nivo/bar'
+import { BarChart } from '@tremor/react'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { nivoTheme, scoreGradient } from './chart-theme'
+import { BRAND_TEAL } from './chart-theme'
 
 interface ProjectRankingData {
   id: string
@@ -18,14 +18,6 @@ interface ProjectRankingsProps {
   limit?: number
 }
 
-type RankingBarDatum = {
-  project: string
-  score: number
-  fullTitle: string
-  teamName: string
-  evaluationCount: number
-}
-
 export function ProjectRankingsChart({
   data,
   limit = 20,
@@ -37,21 +29,12 @@ export function ProjectRankingsChart({
 
   if (!scoredData.length) return null
 
-  const averageScore =
-    scoredData.length > 0
-      ? scoredData.reduce((sum, d) => sum + d.averageScore, 0) /
-        scoredData.length
-      : 0
-
   const displayData = scoredData.slice(0, limit)
 
-  const chartData: RankingBarDatum[] = displayData.map((d) => ({
+  const chartData = displayData.map((d) => ({
     project:
       d.title.length > 30 ? d.title.substring(0, 30) + '...' : d.title,
-    score: d.averageScore,
+    Score: parseFloat(d.averageScore.toFixed(2)),
-    fullTitle: d.title,
-    teamName: d.teamName ?? '',
-    evaluationCount: d.evaluationCount,
   }))
 
   return (
@@ -65,75 +48,18 @@ export function ProjectRankingsChart({
         </CardTitle>
       </CardHeader>
       <CardContent>
-        <div
+        <BarChart
-          style={{
+          data={chartData}
-            height: `${Math.max(400, displayData.length * 30)}px`,
+          index="project"
-          }}
+          categories={['Score']}
-        >
+          colors={[BRAND_TEAL] as string[]}
-          <ResponsiveBar
+          layout="horizontal"
-            data={chartData}
+          yAxisWidth={200}
-            keys={['score']}
+          maxValue={10}
-            indexBy="project"
+          showLegend={false}
-            layout="horizontal"
+          className={`h-[${Math.max(400, displayData.length * 30)}px]`}
-            theme={nivoTheme}
+          style={{ height: `${Math.max(400, displayData.length * 30)}px` }}
-            colors={(bar) => scoreGradient(bar.data.score as number)}
+        />
-            valueScale={{ type: 'linear', max: 10 }}
-            borderRadius={4}
-            enableLabel={true}
-            label={(d) => {
-              const v = d.value
-              return v != null ? Number(v).toFixed(1) : ''
-            }}
-            labelSkipWidth={30}
-            labelTextColor="#ffffff"
-            margin={{ top: 10, right: 30, bottom: 30, left: 200 }}
-            padding={0.2}
-            markers={[
-              {
-                axis: 'x',
-                value: averageScore,
-                lineStyle: {
-                  stroke: '#6b7280',
-                  strokeWidth: 2,
-                  strokeDasharray: '6 4',
-                },
-                legend: `Avg: ${averageScore.toFixed(1)}`,
-                legendPosition: 'top',
-                textStyle: {
-                  fill: '#6b7280',
-                  fontSize: 11,
-                },
-              },
-            ]}
-            tooltip={({ data: rowData }) => (
-              <div
-                style={{
-                  background: '#ffffff',
-                  padding: '8px 12px',
-                  borderRadius: '8px',
-                  boxShadow: '0 4px 12px rgba(0,0,0,0.1)',
-                  border: '1px solid #e5e7eb',
-                  fontSize: 12,
-                }}
-              >
-                <strong>{rowData.fullTitle}</strong>
-                {rowData.teamName && (
-                  <>
-                    <br />
-                    <span style={{ color: '#6b7280' }}>
-                      {rowData.teamName}
-                    </span>
-                  </>
-                )}
-                <br />
-                Score: {Number(rowData.score).toFixed(2)}
-                <br />
-                Evaluations: {rowData.evaluationCount}
-              </div>
-            )}
-            animate={true}
-          />
-        </div>
       </CardContent>
     </Card>
   )

src/components/charts/score-distribution.tsx

@@ -1,8 +1,8 @@
 'use client'
 
-import { ResponsiveBar } from '@nivo/bar'
+import { BarChart } from '@tremor/react'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { nivoTheme, scoreGradient } from './chart-theme'
+import { BRAND_TEAL } from './chart-theme'
 
 interface ScoreDistributionProps {
   data: { score: number; count: number }[]
@@ -19,7 +19,7 @@ export function ScoreDistributionChart({
 
   const chartData = data.map((d) => ({
     score: String(d.score),
-    count: d.count,
+    Count: d.count,
   }))
 
   return (
@@ -33,32 +33,15 @@ export function ScoreDistributionChart({
         </CardTitle>
       </CardHeader>
       <CardContent>
-        <div style={{ height: '300px' }}>
+        <BarChart
-          <ResponsiveBar
+          data={chartData}
-            data={chartData}
+          index="score"
-            keys={['count']}
+          categories={['Count']}
-            indexBy="score"
+          colors={[BRAND_TEAL] as (string)[]}
-            theme={nivoTheme}
+          yAxisWidth={40}
-            colors={(bar) => scoreGradient(Number(bar.indexValue))}
+          showLegend={false}
-            borderRadius={4}
+          className="h-[300px]"
-            enableLabel={true}
+        />
-            labelSkipHeight={12}
-            labelTextColor="#ffffff"
-            axisBottom={{
-              legend: 'Score',
-              legendPosition: 'middle',
-              legendOffset: 36,
-            }}
-            axisLeft={{
-              legend: 'Count',
-              legendPosition: 'middle',
-              legendOffset: -40,
-            }}
-            margin={{ top: 20, right: 20, bottom: 50, left: 50 }}
-            padding={0.2}
-            animate={true}
-          />
-        </div>
       </CardContent>
     </Card>
   )

src/components/charts/status-breakdown.tsx

@@ -1,8 +1,8 @@
 'use client'
 
-import { ResponsivePie } from '@nivo/pie'
+import { DonutChart } from '@tremor/react'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { nivoTheme, getStatusColor, formatStatus } from './chart-theme'
+import { getStatusColor, formatStatus } from './chart-theme'
 
 interface StatusDataPoint {
   status: string
@@ -18,13 +18,13 @@ export function StatusBreakdownChart({ data }: StatusBreakdownProps) {
 
   const total = data.reduce((sum, item) => sum + item.count, 0)
 
-  const pieData = data.map((d) => ({
+  const chartData = data.map((d) => ({
-    id: d.status,
+    name: formatStatus(d.status),
-    label: formatStatus(d.status),
     value: d.count,
-    color: getStatusColor(d.status),
   }))
 
+  const colors = data.map((d) => getStatusColor(d.status))
+
   return (
     <Card>
       <CardHeader>
@@ -36,43 +36,14 @@ export function StatusBreakdownChart({ data }: StatusBreakdownProps) {
         </CardTitle>
       </CardHeader>
       <CardContent>
-        <div style={{ height: '300px' }}>
+        <DonutChart
-          <ResponsivePie
+          data={chartData}
-            data={pieData}
+          category="value"
-            theme={nivoTheme}
+          index="name"
-            colors={{ datum: 'data.color' }}
+          colors={colors as string[]}
-            innerRadius={0.5}
+          showLabel={true}
-            padAngle={0.7}
+          className="h-[300px]"
-            cornerRadius={3}
+        />
-            activeOuterRadiusOffset={8}
-            margin={{ top: 40, right: 80, bottom: 80, left: 80 }}
-            enableArcLinkLabels={true}
-            arcLinkLabelsSkipAngle={10}
-            arcLinkLabelsTextColor="#374151"
-            arcLinkLabelsThickness={2}
-            arcLinkLabelsColor={{ from: 'color' }}
-            enableArcLabels={true}
-            arcLabelsSkipAngle={10}
-            arcLabelsTextColor={{ from: 'color', modifiers: [['darker', 2]] }}
-            legends={[
-              {
-                anchor: 'bottom',
-                direction: 'row',
-                justify: false,
-                translateX: 0,
-                translateY: 56,
-                itemsSpacing: 0,
-                itemWidth: 100,
-                itemHeight: 18,
-                itemTextColor: '#374151',
-                itemDirection: 'left-to-right',
-                itemOpacity: 1,
-                symbolSize: 12,
-                symbolShape: 'circle',
-              },
-            ]}
-          />
-        </div>
       </CardContent>
     </Card>
   )

src/components/layouts/observer-nav.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { BarChart3, Home } from 'lucide-react'
+import { BarChart3, Home, FolderKanban } from 'lucide-react'
 import { RoleNav, type NavItem, type RoleNavUser } from '@/components/layouts/role-nav'
 
 interface ObserverNavProps {
@@ -14,6 +14,11 @@ export function ObserverNav({ user }: ObserverNavProps) {
       href: '/observer',
       icon: Home,
     },
+    {
+      name: 'Projects',
+      href: '/observer/projects',
+      icon: FolderKanban,
+    },
     {
       name: 'Reports',
       href: '/observer/reports',

src/components/observer/observer-projects-content.tsx

@@ -0,0 +1,487 @@
+'use client'
+
+import { useState, useCallback } from 'react'
+import Link from 'next/link'
+import type { Route } from 'next'
+import { useRouter } from 'next/navigation'
+import { trpc } from '@/lib/trpc/client'
+import {
+  Card,
+  CardContent,
+  CardHeader,
+  CardTitle,
+  CardDescription,
+} from '@/components/ui/card'
+import { Badge } from '@/components/ui/badge'
+import { Button } from '@/components/ui/button'
+import { Input } from '@/components/ui/input'
+import { Skeleton } from '@/components/ui/skeleton'
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from '@/components/ui/table'
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select'
+import { StatusBadge } from '@/components/shared/status-badge'
+import { CsvExportDialog } from '@/components/shared/csv-export-dialog'
+import { scoreGradient } from '@/components/charts/chart-theme'
+import {
+  Search,
+  ChevronLeft,
+  ChevronRight,
+  ArrowUpDown,
+  ArrowUp,
+  ArrowDown,
+  ClipboardList,
+  Download,
+  X,
+} from 'lucide-react'
+import { cn } from '@/lib/utils'
+import { useDebouncedCallback } from 'use-debounce'
+
+
+export function ObserverProjectsContent() {
+  const router = useRouter()
+  const [search, setSearch] = useState('')
+  const [debouncedSearch, setDebouncedSearch] = useState('')
+  const [roundFilter, setRoundFilter] = useState('all')
+  const [statusFilter, setStatusFilter] = useState('all')
+  const [sortBy, setSortBy] = useState<'title' | 'score' | 'evaluations'>('title')
+  const [sortDir, setSortDir] = useState<'asc' | 'desc'>('asc')
+  const [page, setPage] = useState(1)
+  const [perPage] = useState(20)
+  const [csvOpen, setCsvOpen] = useState(false)
+  const [csvExportData, setCsvExportData] = useState<
+    { data: Record<string, unknown>[]; columns: string[] } | undefined
+  >(undefined)
+  const [csvLoading, setCsvLoading] = useState(false)
+
+  const debouncedSetSearch = useDebouncedCallback((value: string) => {
+    setDebouncedSearch(value)
+    setPage(1)
+  }, 300)
+
+  const handleSearchChange = (value: string) => {
+    setSearch(value)
+    debouncedSetSearch(value)
+  }
+
+  const handleRoundChange = (value: string) => {
+    setRoundFilter(value)
+    setPage(1)
+  }
+
+  const handleStatusChange = (value: string) => {
+    setStatusFilter(value)
+    setPage(1)
+  }
+
+  const handleSort = (column: 'title' | 'score' | 'evaluations') => {
+    if (sortBy === column) {
+      setSortDir(sortDir === 'asc' ? 'desc' : 'asc')
+    } else {
+      setSortBy(column)
+      setSortDir(column === 'title' ? 'asc' : 'desc')
+    }
+    setPage(1)
+  }
+
+  const clearFilters = () => {
+    setSearch('')
+    setDebouncedSearch('')
+    setRoundFilter('all')
+    setStatusFilter('all')
+    setPage(1)
+  }
+
+  const activeFilterCount =
+    (debouncedSearch ? 1 : 0) +
+    (roundFilter !== 'all' ? 1 : 0) +
+    (statusFilter !== 'all' ? 1 : 0)
+
+  const { data: programs } = trpc.program.list.useQuery(
+    { includeStages: true },
+    { refetchInterval: 30_000 },
+  )
+
+  const rounds =
+    programs?.flatMap((p) =>
+      (p.rounds ?? []).map((r: { id: string; name: string; status: string; roundType?: string }) => ({
+        id: r.id,
+        name: r.name,
+        programName: `${p.year} Edition`,
+        status: r.status,
+        roundType: r.roundType,
+      })),
+    ) ?? []
+
+  const roundIdParam = roundFilter !== 'all' ? roundFilter : undefined
+
+  const { data: projectsData, isLoading: projectsLoading } =
+    trpc.analytics.getAllProjects.useQuery(
+      {
+        roundId: roundIdParam,
+        search: debouncedSearch || undefined,
+        status: statusFilter !== 'all' ? statusFilter : undefined,
+        sortBy,
+        sortDir,
+        page,
+        perPage,
+      },
+      { refetchInterval: 30_000 },
+    )
+
+  const handleRequestCsvData = useCallback(async () => {
+    setCsvLoading(true)
+    try {
+      const allData = await new Promise<typeof projectsData>((resolve) => {
+        resolve(projectsData)
+      })
+
+      if (!allData?.projects) {
+        setCsvLoading(false)
+        return undefined
+      }
+
+      const rows = allData.projects.map((p) => ({
+        title: p.title,
+        teamName: p.teamName ?? '',
+        country: p.country ?? '',
+        roundName: p.roundName ?? '',
+        status: p.status,
+        averageScore: p.averageScore !== null ? p.averageScore.toFixed(2) : '',
+        evaluationCount: p.evaluationCount,
+      }))
+
+      const result = {
+        data: rows,
+        columns: ['title', 'teamName', 'country', 'roundName', 'status', 'averageScore', 'evaluationCount'],
+      }
+      setCsvExportData(result)
+      setCsvLoading(false)
+      return result
+    } catch {
+      setCsvLoading(false)
+      return undefined
+    }
+  }, [projectsData])
+
+  const SortIcon = ({ column }: { column: 'title' | 'score' | 'evaluations' }) => {
+    if (sortBy !== column)
+      return <ArrowUpDown className="ml-1 inline h-3 w-3 text-muted-foreground/50" />
+    return sortDir === 'asc' ? (
+      <ArrowUp className="ml-1 inline h-3 w-3" />
+    ) : (
+      <ArrowDown className="ml-1 inline h-3 w-3" />
+    )
+  }
+
+  return (
+    <div className="space-y-6">
+      <div className="flex items-start justify-between gap-4">
+        <div>
+          <h1 className="text-2xl font-semibold tracking-tight">All Projects</h1>
+          <p className="text-muted-foreground">
+            {projectsData
+              ? `${projectsData.total} project${projectsData.total !== 1 ? 's' : ''} total`
+              : 'Loading projects...'}
+          </p>
+        </div>
+        <Button variant="outline" size="sm" onClick={() => setCsvOpen(true)}>
+          <Download className="mr-2 h-4 w-4" />
+          Export CSV
+        </Button>
+      </div>
+
+      <Card>
+        <CardHeader className="pb-3">
+          <CardTitle className="text-base">Filters</CardTitle>
+          {activeFilterCount > 0 && (
+            <CardDescription className="flex items-center gap-2">
+              <Badge variant="secondary">{activeFilterCount} active</Badge>
+              <button
+                type="button"
+                onClick={clearFilters}
+                className="flex items-center gap-1 text-xs text-muted-foreground hover:text-foreground transition-colors"
+              >
+                <X className="h-3 w-3" />
+                Clear all
+              </button>
+            </CardDescription>
+          )}
+        </CardHeader>
+        <CardContent>
+          <div className="flex flex-col gap-2 sm:flex-row sm:items-center sm:gap-3">
+            <div className="relative flex-1">
+              <Search className="absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
+              <Input
+                placeholder="Search by title or team..."
+                value={search}
+                onChange={(e) => handleSearchChange(e.target.value)}
+                className="pl-10"
+              />
+            </div>
+            <Select value={roundFilter} onValueChange={handleRoundChange}>
+              <SelectTrigger className="w-full sm:w-[220px]">
+                <SelectValue placeholder="All Rounds" />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="all">All Rounds</SelectItem>
+                {rounds.map((round) => (
+                  <SelectItem key={round.id} value={round.id}>
+                    {round.name}
+                    {round.roundType ? ` (${round.roundType.replace(/_/g, ' ')})` : ''}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+            <Select value={statusFilter} onValueChange={handleStatusChange}>
+              <SelectTrigger className="w-full sm:w-[180px]">
+                <SelectValue placeholder="All Statuses" />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="all">All Statuses</SelectItem>
+                <SelectItem value="SUBMITTED">Submitted</SelectItem>
+                <SelectItem value="ELIGIBLE">Eligible</SelectItem>
+                <SelectItem value="ASSIGNED">Assigned</SelectItem>
+                <SelectItem value="SEMIFINALIST">Semi-finalist</SelectItem>
+                <SelectItem value="FINALIST">Finalist</SelectItem>
+                <SelectItem value="REJECTED">Rejected</SelectItem>
+              </SelectContent>
+            </Select>
+          </div>
+        </CardContent>
+      </Card>
+
+      {projectsLoading ? (
+        <Card>
+          <CardContent className="pt-6 space-y-2">
+            {[...Array(8)].map((_, i) => (
+              <Skeleton key={i} className="h-12 w-full" />
+            ))}
+          </CardContent>
+        </Card>
+      ) : projectsData && projectsData.projects.length > 0 ? (
+        <>
+          <div className="hidden md:block">
+            <Card>
+              <CardContent className="p-0">
+                <Table>
+                  <TableHeader>
+                    <TableRow>
+                      <TableHead className="pl-6">
+                        <button
+                          type="button"
+                          onClick={() => handleSort('title')}
+                          className="inline-flex items-center hover:text-foreground transition-colors"
+                        >
+                          Project
+                          <SortIcon column="title" />
+                        </button>
+                      </TableHead>
+                      <TableHead>Country</TableHead>
+                      <TableHead>Round</TableHead>
+                      <TableHead>Status</TableHead>
+                      <TableHead>
+                        <button
+                          type="button"
+                          onClick={() => handleSort('score')}
+                          className="inline-flex items-center hover:text-foreground transition-colors"
+                        >
+                          Score
+                          <SortIcon column="score" />
+                        </button>
+                      </TableHead>
+                      <TableHead>
+                        <button
+                          type="button"
+                          onClick={() => handleSort('evaluations')}
+                          className="inline-flex items-center hover:text-foreground transition-colors"
+                        >
+                          Jurors
+                          <SortIcon column="evaluations" />
+                        </button>
+                      </TableHead>
+                      <TableHead className="pr-6 w-10" />
+                    </TableRow>
+                  </TableHeader>
+                  <TableBody>
+                    {projectsData.projects.map((project) => (
+                      <TableRow
+                        key={project.id}
+                        className="cursor-pointer hover:bg-muted/50"
+                        onClick={() => router.push(`/observer/projects/${project.id}`)}
+                      >
+                        <TableCell className="pl-6 max-w-[260px]">
+                          <Link
+                            href={`/observer/projects/${project.id}` as Route}
+                            className="font-medium hover:underline truncate block"
+                            onClick={(e) => e.stopPropagation()}
+                          >
+                            {project.title}
+                          </Link>
+                          {project.teamName && (
+                            <p className="text-xs text-muted-foreground truncate">
+                              {project.teamName}
+                            </p>
+                          )}
+                        </TableCell>
+                        <TableCell className="text-sm">
+                          {project.country ?? '-'}
+                        </TableCell>
+                        <TableCell>
+                          <Badge variant="outline" className="text-xs whitespace-nowrap">
+                            {project.roundName}
+                          </Badge>
+                        </TableCell>
+                        <TableCell>
+                          <StatusBadge status={project.status} />
+                        </TableCell>
+                        <TableCell>
+                          {project.averageScore !== null ? (
+                            <div className="flex items-center gap-2">
+                              <span className="tabular-nums w-8 text-sm">
+                                {project.averageScore.toFixed(1)}
+                              </span>
+                              <div className="h-2 w-16 rounded-full bg-muted overflow-hidden">
+                                <div
+                                  className="h-full rounded-full"
+                                  style={{
+                                    width: `${(project.averageScore / 10) * 100}%`,
+                                    backgroundColor: scoreGradient(project.averageScore),
+                                  }}
+                                />
+                              </div>
+                            </div>
+                          ) : (
+                            <span className="text-muted-foreground text-sm">-</span>
+                          )}
+                        </TableCell>
+                        <TableCell className="tabular-nums text-sm">
+                          {project.evaluationCount}
+                        </TableCell>
+                        <TableCell className="pr-6">
+                          <Link
+                            href={`/observer/projects/${project.id}` as Route}
+                            onClick={(e) => e.stopPropagation()}
+                          >
+                            <ChevronRight className="h-4 w-4 text-muted-foreground" />
+                          </Link>
+                        </TableCell>
+                      </TableRow>
+                    ))}
+                  </TableBody>
+                </Table>
+              </CardContent>
+            </Card>
+          </div>
+
+          <div className="space-y-3 md:hidden">
+            {projectsData.projects.map((project) => (
+              <Link
+                key={project.id}
+                href={`/observer/projects/${project.id}` as Route}
+              >
+                <Card className="transition-colors hover:bg-muted/50">
+                  <CardContent className="pt-4 space-y-2">
+                    <div className="flex items-start justify-between gap-2">
+                      <div className="min-w-0">
+                        <p className="font-medium text-sm leading-tight truncate">
+                          {project.title}
+                        </p>
+                        {project.teamName && (
+                          <p className="text-xs text-muted-foreground truncate">
+                            {project.teamName}
+                          </p>
+                        )}
+                      </div>
+                      <StatusBadge status={project.status} />
+                    </div>
+                    <div className="flex items-center justify-between gap-2 text-xs text-muted-foreground">
+                      <Badge variant="outline" className="text-xs">
+                        {project.roundName}
+                      </Badge>
+                      <div className="flex gap-3">
+                        <span>
+                          Score:{' '}
+                          {project.averageScore !== null
+                            ? project.averageScore.toFixed(1)
+                            : '-'}
+                        </span>
+                        <span>
+                          {project.evaluationCount} eval
+                          {project.evaluationCount !== 1 ? 's' : ''}
+                        </span>
+                      </div>
+                    </div>
+                  </CardContent>
+                </Card>
+              </Link>
+            ))}
+          </div>
+
+          <div className="flex items-center justify-between">
+            <p className="text-sm text-muted-foreground">
+              Page {projectsData.page} of {projectsData.totalPages} &middot;{' '}
+              {projectsData.total} result{projectsData.total !== 1 ? 's' : ''}
+            </p>
+            <div className="flex items-center gap-2">
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={() => setPage((p) => Math.max(1, p - 1))}
+                disabled={page <= 1}
+              >
+                <ChevronLeft className="h-4 w-4" />
+              </Button>
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={() =>
+                  setPage((p) => Math.min(projectsData.totalPages, p + 1))
+                }
+                disabled={page >= projectsData.totalPages}
+              >
+                <ChevronRight className="h-4 w-4" />
+              </Button>
+            </div>
+          </div>
+        </>
+      ) : (
+        <div
+          className={cn(
+            'flex flex-col items-center justify-center rounded-lg border border-dashed py-16 text-center',
+          )}
+        >
+          <ClipboardList className="h-12 w-12 text-muted-foreground/50" />
+          <p className="mt-3 font-medium">
+            {activeFilterCount > 0 ? 'No projects match your filters' : 'No projects found'}
+          </p>
+          {activeFilterCount > 0 && (
+            <Button variant="ghost" size="sm" className="mt-2" onClick={clearFilters}>
+              Clear filters
+            </Button>
+          )}
+        </div>
+      )}
+
+      <CsvExportDialog
+        open={csvOpen}
+        onOpenChange={setCsvOpen}
+        exportData={csvExportData}
+        isLoading={csvLoading}
+        filename="observer-projects"
+        onRequestData={handleRequestCsvData}
+      />
+    </div>
+  )
+}

src/server/routers/analytics.ts

@@ -627,92 +627,6 @@ export const analyticsRouter = router({
       return { total, byCountry, byCategory, byOceanIssue, byTag }
     }),
 
-  /**
-   * Get year-over-year stats across all rounds in a program
-   */
-  getYearOverYear: observerProcedure
-    .input(z.object({ programId: z.string() }))
-    .query(async ({ ctx, input }) => {
-      const competitions = await ctx.prisma.competition.findMany({
-        where: { programId: input.programId },
-        include: {
-          rounds: {
-            select: { id: true, name: true, createdAt: true },
-            orderBy: { createdAt: 'asc' },
-          },
-        },
-        orderBy: { createdAt: 'asc' },
-      })
-
-      const allRounds = competitions.flatMap((c) => c.rounds)
-      const roundIds = allRounds.map((r) => r.id)
-
-      if (roundIds.length === 0) return []
-
-      // Batch: fetch assignments, evaluations, and distinct projects in 3 queries
-      const [assignmentCounts, evaluations, projectAssignments] = await Promise.all([
-        ctx.prisma.assignment.groupBy({
-          by: ['roundId'],
-          where: { roundId: { in: roundIds } },
-          _count: true,
-        }),
-        ctx.prisma.evaluation.findMany({
-          where: {
-            assignment: { roundId: { in: roundIds } },
-            status: 'SUBMITTED',
-          },
-          select: { globalScore: true, assignment: { select: { roundId: true } } },
-        }),
-        ctx.prisma.assignment.findMany({
-          where: { roundId: { in: roundIds } },
-          select: { roundId: true, projectId: true },
-          distinct: ['roundId', 'projectId'],
-        }),
-      ])
-
-      const assignmentCountMap = new Map(assignmentCounts.map((a) => [a.roundId, a._count]))
-
-      // Group evaluation scores by round
-      const scoresByRound = new Map<string, number[]>()
-      const evalCountByRound = new Map<string, number>()
-      for (const e of evaluations) {
-        const rid = e.assignment.roundId
-        evalCountByRound.set(rid, (evalCountByRound.get(rid) ?? 0) + 1)
-        if (e.globalScore !== null) {
-          if (!scoresByRound.has(rid)) scoresByRound.set(rid, [])
-          scoresByRound.get(rid)!.push(e.globalScore)
-        }
-      }
-
-      // Count distinct projects per round
-      const projectsByRound = new Map<string, number>()
-      for (const pa of projectAssignments) {
-        projectsByRound.set(pa.roundId, (projectsByRound.get(pa.roundId) ?? 0) + 1)
-      }
-
-      return allRounds.map((round) => {
-        const scores = scoresByRound.get(round.id) ?? []
-        const assignmentCount = assignmentCountMap.get(round.id) ?? 0
-        const evaluationCount = evalCountByRound.get(round.id) ?? 0
-        const completionRate = assignmentCount > 0
-          ? Math.round((evaluationCount / assignmentCount) * 100)
-          : 0
-        const averageScore = scores.length > 0
-          ? scores.reduce((a, b) => a + b, 0) / scores.length
-          : null
-
-        return {
-          roundId: round.id,
-          roundName: round.name,
-          createdAt: round.createdAt,
-          projectCount: projectsByRound.get(round.id) ?? 0,
-          evaluationCount,
-          completionRate,
-          averageScore,
-        }
-      })
-    }),
-
   /**
    * Get dashboard stats (optionally scoped to a round)
    */
@@ -875,61 +789,86 @@ export const analyticsRouter = router({
         },
       })
 
-      // For each round, get assignment coverage and evaluation completion
+      // Batch all queries by roundIds to avoid N+1
-      const roundOverviews = await Promise.all(
+      const roundIds = rounds.map((r) => r.id)
-        rounds.map(async (round) => {
-          const [
-            projectRoundStates,
-            totalAssignments,
-            completedEvaluations,
-            distinctJurors,
-          ] = await Promise.all([
-            ctx.prisma.projectRoundState.groupBy({
-              by: ['state'],
-              where: { roundId: round.id },
-              _count: true,
-            }),
-            ctx.prisma.assignment.count({
-              where: { roundId: round.id },
-            }),
-            ctx.prisma.evaluation.count({
-              where: {
-                assignment: { roundId: round.id },
-                status: 'SUBMITTED',
-              },
-            }),
-            ctx.prisma.assignment.groupBy({
-              by: ['userId'],
-              where: { roundId: round.id },
-            }),
-          ])
 
-          const stateBreakdown = projectRoundStates.map((ps) => ({
+      const [
-            state: ps.state,
+        allProjectRoundStates,
-            count: ps._count,
+        allAssignmentCounts,
-          }))
+        allCompletedEvals,
+        allDistinctJurors,
+      ] = await Promise.all([
+        ctx.prisma.projectRoundState.groupBy({
+          by: ['roundId', 'state'],
+          where: { roundId: { in: roundIds } },
+          _count: true,
+        }),
+        ctx.prisma.assignment.groupBy({
+          by: ['roundId'],
+          where: { roundId: { in: roundIds } },
+          _count: true,
+        }),
+        // groupBy on relation field not supported, use raw count per round
+        ctx.prisma.$queryRaw<{ roundId: string; count: bigint }[]>`
+          SELECT a."roundId", COUNT(e.id)::bigint as count
+          FROM "Evaluation" e
+          JOIN "Assignment" a ON e."assignmentId" = a.id
+          WHERE a."roundId" = ANY(${roundIds}) AND e.status = 'SUBMITTED'
+          GROUP BY a."roundId"
+        `,
+        ctx.prisma.assignment.groupBy({
+          by: ['roundId', 'userId'],
+          where: { roundId: { in: roundIds } },
+        }),
+      ])
 
-          const totalProjects = projectRoundStates.reduce((sum, ps) => sum + ps._count, 0)
+      // Build lookup maps
-          const completionRate = totalAssignments > 0
+      const statesByRound = new Map<string, { state: string; count: number }[]>()
-            ? Math.round((completedEvaluations / totalAssignments) * 100)
+      for (const ps of allProjectRoundStates) {
-            : 0
+        const list = statesByRound.get(ps.roundId) || []
+        list.push({ state: ps.state, count: ps._count })
+        statesByRound.set(ps.roundId, list)
+      }
 
-          return {
+      const assignmentCountByRound = new Map<string, number>()
-            roundId: round.id,
+      for (const ac of allAssignmentCounts) {
-            roundName: round.name,
+        assignmentCountByRound.set(ac.roundId, ac._count)
-            roundType: round.roundType,
+      }
-            roundStatus: round.status,
+
-            sortOrder: round.sortOrder,
+      const completedEvalsByRound = new Map<string, number>()
-            totalProjects,
+      for (const ce of allCompletedEvals) {
-            stateBreakdown,
+        completedEvalsByRound.set(ce.roundId, Number(ce.count))
-            totalAssignments,
+      }
-            completedEvaluations,
+
-            pendingEvaluations: totalAssignments - completedEvaluations,
+      const jurorCountByRound = new Map<string, number>()
-            completionRate,
+      for (const j of allDistinctJurors) {
-            jurorCount: distinctJurors.length,
+        jurorCountByRound.set(j.roundId, (jurorCountByRound.get(j.roundId) || 0) + 1)
-          }
+      }
-        })
+
-      )
+      const roundOverviews = rounds.map((round) => {
+        const stateBreakdown = statesByRound.get(round.id) || []
+        const totalProjects = stateBreakdown.reduce((sum, ps) => sum + ps.count, 0)
+        const totalAssignments = assignmentCountByRound.get(round.id) || 0
+        const completedEvaluations = completedEvalsByRound.get(round.id) || 0
+        const completionRate = totalAssignments > 0
+          ? Math.round((completedEvaluations / totalAssignments) * 100)
+          : 0
+
+        return {
+          roundId: round.id,
+          roundName: round.name,
+          roundType: round.roundType,
+          roundStatus: round.status,
+          sortOrder: round.sortOrder,
+          totalProjects,
+          stateBreakdown,
+          totalAssignments,
+          completedEvaluations,
+          pendingEvaluations: totalAssignments - completedEvaluations,
+          completionRate,
+          jurorCount: jurorCountByRound.get(round.id) || 0,
+        }
+      })
 
       return {
         competitionId: input.competitionId,
@@ -972,7 +911,7 @@ export const analyticsRouter = router({
       const where: Record<string, unknown> = {}
 
       if (input.roundId) {
-        where.assignments = { some: { roundId: input.roundId } }
+        where.projectRoundStates = { some: { roundId: input.roundId } }
       }
 
       if (input.status) {
@@ -1370,4 +1309,47 @@ export const analyticsRouter = router({
         allRequirements,
       }
     }),
+
+  /**
+   * Activity feed — recent audit log entries for observer dashboard
+   */
+  getActivityFeed: observerProcedure
+    .input(z.object({ limit: z.number().min(1).max(50).default(10) }).optional())
+    .query(async ({ ctx, input }) => {
+      const limit = input?.limit ?? 10
+
+      const entries = await ctx.prisma.decisionAuditLog.findMany({
+        orderBy: { createdAt: 'desc' },
+        take: limit,
+        select: {
+          id: true,
+          eventType: true,
+          entityType: true,
+          entityId: true,
+          actorId: true,
+          detailsJson: true,
+          createdAt: true,
+        },
+      })
+
+      // Batch-fetch actor names
+      const actorIds = [...new Set(entries.map((e) => e.actorId).filter(Boolean))] as string[]
+      const actors = actorIds.length > 0
+        ? await ctx.prisma.user.findMany({
+            where: { id: { in: actorIds } },
+            select: { id: true, name: true },
+          })
+        : []
+      const actorMap = new Map(actors.map((a) => [a.id, a.name]))
+
+      return entries.map((entry) => ({
+        id: entry.id,
+        eventType: entry.eventType,
+        entityType: entry.entityType,
+        entityId: entry.entityId,
+        actorName: entry.actorId ? actorMap.get(entry.actorId) ?? null : null,
+        details: entry.detailsJson as Record<string, unknown> | null,
+        createdAt: entry.createdAt,
+      }))
+    }),
 })

src/server/routers/file.ts

@@ -20,9 +20,9 @@ export const fileRouter = router({
       })
     )
     .query(async ({ ctx, input }) => {
-      const isAdmin = ['SUPER_ADMIN', 'PROGRAM_ADMIN'].includes(ctx.user.role)
+      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER'].includes(ctx.user.role)
 
-      if (!isAdmin) {
+      if (!isAdminOrObserver) {
         const file = await ctx.prisma.projectFile.findFirst({
           where: { bucket: input.bucket, objectKey: input.objectKey },
           select: {
@@ -283,9 +283,9 @@ export const fileRouter = router({
       roundId: z.string().optional(),
     }))
     .query(async ({ ctx, input }) => {
-      const isAdmin = ['SUPER_ADMIN', 'PROGRAM_ADMIN'].includes(ctx.user.role)
+      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER'].includes(ctx.user.role)
 
-      if (!isAdmin) {
+      if (!isAdminOrObserver) {
         const [juryAssignment, mentorAssignment, teamMembership] = await Promise.all([
           ctx.prisma.assignment.findFirst({
             where: { userId: ctx.user.id, projectId: input.projectId },
@@ -348,9 +348,9 @@ export const fileRouter = router({
       roundId: z.string(),
     }))
     .query(async ({ ctx, input }) => {
-      const isAdmin = ['SUPER_ADMIN', 'PROGRAM_ADMIN'].includes(ctx.user.role)
+      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER'].includes(ctx.user.role)
 
-      if (!isAdmin) {
+      if (!isAdminOrObserver) {
         const [juryAssignment, mentorAssignment, teamMembership] = await Promise.all([
           ctx.prisma.assignment.findFirst({
             where: { userId: ctx.user.id, projectId: input.projectId },
@@ -468,9 +468,9 @@ export const fileRouter = router({
       })
     )
     .mutation(async ({ ctx, input }) => {
-      const isAdmin = ['SUPER_ADMIN', 'PROGRAM_ADMIN'].includes(ctx.user.role)
+      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER'].includes(ctx.user.role)
 
-      if (!isAdmin) {
+      if (!isAdminOrObserver) {
         // Check user has access to the project (assigned or team member)
         const [assignment, mentorAssignment, teamMembership] = await Promise.all([
           ctx.prisma.assignment.findFirst({
@@ -652,9 +652,9 @@ export const fileRouter = router({
       })
     )
     .query(async ({ ctx, input }) => {
-      const isAdmin = ['SUPER_ADMIN', 'PROGRAM_ADMIN'].includes(ctx.user.role)
+      const isAdminOrObserver = ['SUPER_ADMIN', 'PROGRAM_ADMIN', 'OBSERVER'].includes(ctx.user.role)
 
-      if (!isAdmin) {
+      if (!isAdminOrObserver) {
         const [assignment, mentorAssignment, teamMembership] = await Promise.all([
           ctx.prisma.assignment.findFirst({
             where: { userId: ctx.user.id, projectId: input.projectId },

tailwind.config.ts

@@ -6,6 +6,7 @@ const config: Config = {
     './src/pages/**/*.{js,ts,jsx,tsx,mdx}',
     './src/components/**/*.{js,ts,jsx,tsx,mdx}',
     './src/app/**/*.{js,ts,jsx,tsx,mdx}',
+    './node_modules/@tremor/**/*.{js,ts,jsx,tsx}',
   ],
   theme: {
     container: {