[verified] fix app-dev api proxy and build env

# Conflicts:
#	src/AppRoutes.tsx
#	src/pages/exam/index.ts
#	src/services/exam/examRepository.ts
#	src/types/exam.types.ts

Dockerfile

@@ -7,13 +7,37 @@ RUN if [ ! -f package-lock.json ]; then npm install --package-lock-only; fi && n
 
 COPY . .
 
-# Vite bakes VITE_* values at build time, so compose must choose the env file
-# during image build, not only at container runtime.
-ARG ENV_FILE=.env
-COPY ${ENV_FILE} .env
-
-# Run build with production mode
-RUN npm run build -- --mode production
+# Vite bakes VITE_* values at build time. Pass the public VITE_* values as
+# build args (docker compose --env-file .env.dev) instead of COPYing an env file;
+# service-host worktrees keep .env.dev as a symlink outside the Docker context.
+ARG VITE_API_BASE
+ARG VITE_API_URL
+ARG VITE_APP_NAME
+ARG VITE_APP_HMR_URL
+ARG VITE_DEV
+ARG VITE_FRONTEND_SITE_URL
+ARG VITE_SEARCH_URL
+ARG VITE_SUPABASE_ANON_KEY
+ARG VITE_SUPABASE_URL
+ARG VITE_SUPER_ADMIN_EMAIL
+ARG VITE_TLSYNC_URL
+ARG VITE_WHISPERLIVE_URL
+# Run build with production mode. Keep these as build-step environment values
+# rather than final-image ENV entries; Vite still embeds the public client config
+# into the static bundle, but nginx image metadata does not need them.
+RUN VITE_API_BASE="${VITE_API_BASE}" \
+    VITE_API_URL="${VITE_API_URL}" \
+    VITE_APP_NAME="${VITE_APP_NAME}" \
+    VITE_APP_HMR_URL="${VITE_APP_HMR_URL}" \
+    VITE_DEV="${VITE_DEV}" \
+    VITE_FRONTEND_SITE_URL="${VITE_FRONTEND_SITE_URL}" \
+    VITE_SEARCH_URL="${VITE_SEARCH_URL}" \
+    VITE_SUPABASE_ANON_KEY="${VITE_SUPABASE_ANON_KEY}" \
+    VITE_SUPABASE_URL="${VITE_SUPABASE_URL}" \
+    VITE_SUPER_ADMIN_EMAIL="${VITE_SUPER_ADMIN_EMAIL}" \
+    VITE_TLSYNC_URL="${VITE_TLSYNC_URL}" \
+    VITE_WHISPERLIVE_URL="${VITE_WHISPERLIVE_URL}" \
+    npm run build -- --mode production
 
 FROM nginx:alpine
 # Copy built files
@@ -31,6 +55,18 @@ RUN echo 'server { \
     expires -1; \
     add_header Cache-Control "no-store, no-cache, must-revalidate"; \
     } \
+    location = /health { \
+    proxy_pass http://192.168.0.64:18000/health; \
+    proxy_set_header Host $host; \
+    proxy_set_header X-Real-IP $remote_addr; \
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; \
+    } \
+    location /api/ { \
+    proxy_pass http://192.168.0.64:18000/api/; \
+    proxy_set_header Host $host; \
+    proxy_set_header X-Real-IP $remote_addr; \
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; \
+    } \
     location / { \
     try_files $uri $uri/ /index.html; \
     expires 30d; \

docker-compose.dev.yml

@@ -16,7 +16,18 @@ services:
       context: .
       dockerfile: Dockerfile
       args:
-        ENV_FILE: .env.dev
+        VITE_API_BASE: ${VITE_API_BASE:-}
+        VITE_API_URL: ${VITE_API_URL:-}
+        VITE_APP_NAME: ${VITE_APP_NAME:-Classroom Copilot}
+        VITE_APP_HMR_URL: ${VITE_APP_HMR_URL:-}
+        VITE_DEV: ${VITE_DEV:-false}
+        VITE_FRONTEND_SITE_URL: ${VITE_FRONTEND_SITE_URL:-}
+        VITE_SEARCH_URL: ${VITE_SEARCH_URL:-}
+        VITE_SUPABASE_ANON_KEY: ${VITE_SUPABASE_ANON_KEY:-}
+        VITE_SUPABASE_URL: ${VITE_SUPABASE_URL:-}
+        VITE_SUPER_ADMIN_EMAIL: ${VITE_SUPER_ADMIN_EMAIL:-}
+        VITE_TLSYNC_URL: ${VITE_TLSYNC_URL:-}
+        VITE_WHISPERLIVE_URL: ${VITE_WHISPERLIVE_URL:-}
     env_file:
       - .env.dev
     ports:

src/AppRoutes.admin.test.tsx

@@ -35,6 +35,9 @@ vi.mock('./pages/exam', () => ({
   ExamDashboardPage: () => <div>Exam Marker</div>,
   ExamTemplateSetupPage: () => <div>Exam Template Setup</div>,
   MarkSchemePage: () => <div>Mark Scheme editor</div>,
+  ExamMarkingPage: () => <div>Exam Marking</div>,
+  ExamResultsPage: () => <div>Exam Results</div>,
+  ResultsWidget: () => <div>Results Widget</div>,
 }));
 vi.mock('./pages/user/calendarPage', () => ({ default: () => <div>Calendar</div> }));
 vi.mock('./pages/user/settingsPage', () => ({ default: () => <div>Settings</div> }));

src/AppRoutes.tsx

@@ -7,7 +7,7 @@ import LoginPage from './pages/auth/loginPage';
 import SignupPage from './pages/auth/signupPage';
 import SinglePlayerPage from './pages/tldraw/singlePlayerPage';
 import MultiplayerUser from './pages/tldraw/multiplayerUser';
-import { ExamDashboardPage, ExamTemplateSetupPage, MarkSchemePage } from './pages/exam';
+import { ExamDashboardPage, ExamMarkingPage, ExamResultsPage, ExamTemplateSetupPage, MarkSchemePage } from './pages/exam';
 import { ErrorBoundary } from './components/ErrorBoundary';
 import CalendarPage from './pages/user/calendarPage';
 import SettingsPage from './pages/user/settingsPage';
@@ -169,6 +169,7 @@ const AppRoutes: React.FC = () => {
             <Route path="/classes" element={<ClassesPage />} />
             <Route path="/my-classes" element={<MyClassesPage />} />
             <Route path="/classes/:classId" element={<ClassDetailPage />} />
+            <Route path="/timetable/classes/:classId" element={<ClassDetailPage />} />
             <Route path="/student-lessons" element={<StudentLessonsPage />} />
             <Route path="/lesson-plans" element={<LessonPlansPage />} />
             <Route path="/lesson-plans/:planId" element={<LessonPlanDetailPage />} />
@@ -185,6 +186,8 @@ const AppRoutes: React.FC = () => {
             <Route path="/exam-marker" element={<ErrorBoundary><ExamDashboardPage /></ErrorBoundary>} />
             <Route path="/exam-marker/:templateId/setup" element={<ErrorBoundary><ExamTemplateSetupPage /></ErrorBoundary>} />
             <Route path="/exam-marker/:templateId/marks" element={<ErrorBoundary><MarkSchemePage /></ErrorBoundary>} />
+            <Route path="/exam-marker/:batchId/mark" element={<ErrorBoundary><ExamMarkingPage /></ErrorBoundary>} />
+            <Route path="/exam-marker/:batchId/results" element={<ErrorBoundary><ExamResultsPage /></ErrorBoundary>} />
             <Route path="/doc-intelligence/:fileId" element={<CCDocumentIntelligence />} />
             <Route path="/morphic" element={<MorphicPage />} />
             <Route path="/tldraw-dev" element={<TLDrawDevPage />} />

src/pages/exam/ExamDashboardPage.tsx

@@ -315,20 +315,20 @@ const ExamDashboardPage: React.FC = () => {
                           {t.exam_code && (
                             <Typography variant="caption" color="text.secondary">{t.exam_code}</Typography>
                           )}
-                          <Stack spacing={1} sx={{ mt: 'auto', pt: 1 }}>
-                            <Box sx={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between' }}>
-                              <Chip size="small" label={t.status} color={STATUS_COLOR[t.status] ?? 'default'} variant="outlined" />
-                              <Typography variant="caption" color="text.secondary">
-                                Updated {new Date(t.updated_at).toLocaleDateString()}
-                              </Typography>
-                            </Box>
+                          <Box sx={{ mt: 'auto', pt: 1, display: 'flex', alignItems: 'center', justifyContent: 'space-between' }}>
+                            <Chip size="small" label={t.status} color={STATUS_COLOR[t.status] ?? 'default'} variant="outlined" />
+                            <Typography variant="caption" color="text.secondary">
+                              Updated {new Date(t.updated_at).toLocaleDateString()}
+                            </Typography>
+                          </Box>
+                          <Stack direction="row" spacing={1} sx={{ pt: 0.5 }}>
                             <Button
                               size="small"
                               variant="outlined"
                               onClick={(e) => { e.stopPropagation(); navigate(`/exam-marker/${t.id}/marks`); }}
                               startIcon={<GradingIcon fontSize="small" />}
                             >
-                              Mark scheme
+                              Edit marks
                             </Button>
                           </Stack>
                         </Paper>

src/pages/exam/ExamMarkingPage.tsx

@@ -0,0 +1,233 @@
+import React, { useCallback, useEffect, useMemo, useState } from 'react';
+import { useNavigate, useParams } from 'react-router-dom';
+import { v5 as uuidv5 } from 'uuid';
+import {
+  Alert,
+  Box,
+  Button,
+  Card,
+  CardContent,
+  Chip,
+  CircularProgress,
+  Container,
+  Divider,
+  List,
+  ListItemButton,
+  ListItemText,
+  Stack,
+  TextField,
+  Typography,
+} from '@mui/material';
+import ArrowBackIcon from '@mui/icons-material/ArrowBack';
+import SaveIcon from '@mui/icons-material/Save';
+import TableChartIcon from '@mui/icons-material/TableChart';
+
+import { examRepository } from '../../services/exam/examRepository';
+import type { BatchQueueResponse, ExamQuestion, ExamTemplateDetail, StudentSubmission } from '../../types/exam.types';
+
+const MARK_NAMESPACE = '3f2dbbeb-9b15-4f99-9b71-8c535f8dc3d0';
+
+function stableMarkId(batchId: string, submissionId: string, questionId: string) {
+  return uuidv5(`${batchId}:${submissionId}:${questionId}`, MARK_NAMESPACE);
+}
+
+const ExamMarkingPage: React.FC = () => {
+  const { batchId } = useParams<{ batchId: string }>();
+  const navigate = useNavigate();
+  const [queue, setQueue] = useState<BatchQueueResponse | null>(null);
+  const [template, setTemplate] = useState<ExamTemplateDetail | null>(null);
+  const [selectedId, setSelectedId] = useState<string | null>(null);
+  const [marks, setMarks] = useState<Record<string, string>>({});
+  const [comments, setComments] = useState<Record<string, string>>({});
+  const [loading, setLoading] = useState(true);
+  const [saving, setSaving] = useState(false);
+  const [message, setMessage] = useState<string | null>(null);
+  const [error, setError] = useState<string | null>(null);
+
+  const load = useCallback(async () => {
+    if (!batchId) return;
+    setLoading(true);
+    setError(null);
+    try {
+      const nextQueue = await examRepository.getBatchQueue(batchId);
+      setQueue(nextQueue);
+      setTemplate(await examRepository.getTemplate(nextQueue.batch.template_id));
+      setSelectedId((current) => current ?? nextQueue.submissions[0]?.id ?? null);
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    } finally {
+      setLoading(false);
+    }
+  }, [batchId]);
+
+  useEffect(() => {
+    void load();
+  }, [load]);
+
+  const markableQuestions = useMemo(
+    () => (template?.questions ?? []).filter((q) => !q.is_container).sort((a, b) => a.order - b.order),
+    [template],
+  );
+  const selected = queue?.submissions.find((s) => s.id === selectedId) ?? null;
+
+  const saveSelected = async () => {
+    if (!batchId || !selected) return;
+    setSaving(true);
+    setError(null);
+    setMessage(null);
+    try {
+      const writes = markableQuestions
+        .map((q) => ({ q, raw: marks[q.id], comment: comments[q.id] }))
+        .filter(({ raw, comment }) => raw !== undefined && raw !== '' || !!comment?.trim());
+      for (const { q, raw, comment } of writes) {
+        const awarded = raw === undefined || raw === '' ? 0 : Number(raw);
+        if (Number.isNaN(awarded) || awarded < 0 || awarded > (q.max_marks ?? Number.MAX_SAFE_INTEGER)) {
+          throw new Error(`Invalid mark for ${q.label}`);
+        }
+        await examRepository.upsertMark(stableMarkId(batchId, selected.id, q.id), {
+          submission_id: selected.id,
+          question_id: q.id,
+          awarded_marks: awarded,
+          comment: comment?.trim() || undefined,
+          confirmed: true,
+        });
+      }
+      setMessage(`Saved ${writes.length} mark${writes.length === 1 ? '' : 's'} for ${selected.student_name || selected.student_id || 'student'}.`);
+      setMarks({});
+      setComments({});
+      await load();
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  const chooseStudent = (submission: StudentSubmission) => {
+    setSelectedId(submission.id);
+    setMarks({});
+    setComments({});
+    setMessage(null);
+  };
+
+  if (loading) {
+    return <Box sx={{ display: 'flex', justifyContent: 'center', py: 8 }}><CircularProgress /></Box>;
+  }
+
+  if (error && !queue) {
+    return (
+      <Container maxWidth="lg" sx={{ py: 4 }}>
+        <Alert severity="error">{error}</Alert>
+        <Button sx={{ mt: 2 }} startIcon={<ArrowBackIcon />} onClick={() => navigate('/exam-marker')}>
+          Back to Exam Marker
+        </Button>
+      </Container>
+    );
+  }
+
+  return (
+    <Container maxWidth="xl" sx={{ py: 3 }}>
+      <Stack spacing={2}>
+        <Box sx={{ display: 'flex', alignItems: 'flex-start', justifyContent: 'space-between', gap: 2, flexWrap: 'wrap' }}>
+          <Box>
+            <Button size="small" startIcon={<ArrowBackIcon />} onClick={() => navigate('/exam-marker')} sx={{ mb: 1 }}>
+              Exam Marker
+            </Button>
+            <Typography variant="h4" component="h1" fontWeight={700}>{queue?.batch.title || 'Mark exam'}</Typography>
+            <Typography variant="body2" color="text.secondary">
+              {template?.title || queue?.batch.template_id} · {queue?.progress.total ?? 0} students in queue
+            </Typography>
+          </Box>
+          <Button variant="outlined" startIcon={<TableChartIcon />} onClick={() => batchId && navigate(`/exam-marker/${batchId}/results`)}>
+            Results
+          </Button>
+        </Box>
+
+        {error && <Alert severity="error" onClose={() => setError(null)}>{error}</Alert>}
+        {message && <Alert severity="success" onClose={() => setMessage(null)}>{message}</Alert>}
+        {markableQuestions.length === 0 && (
+          <Alert severity="warning">
+            This template has no markable parts yet. Add parts in template setup before entering marks.
+          </Alert>
+        )}
+
+        <Stack direction={{ xs: 'column', md: 'row' }} spacing={2} alignItems="stretch">
+          <Card variant="outlined" sx={{ width: { xs: '100%', md: 340 }, flexShrink: 0 }}>
+            <CardContent>
+              <Typography variant="h6" gutterBottom>Marking queue</Typography>
+              <Stack direction="row" spacing={1} sx={{ mb: 1 }} flexWrap="wrap" useFlexGap>
+                <Chip size="small" label={`${queue?.progress.total ?? 0} total`} />
+                <Chip size="small" label={`${queue?.progress.absent ?? 0} absent`} color="warning" variant="outlined" />
+                <Chip size="small" label={`${queue?.progress.complete ?? 0} complete`} color="success" variant="outlined" />
+              </Stack>
+              <List dense disablePadding>
+                {(queue?.submissions ?? []).map((submission) => (
+                  <ListItemButton
+                    key={submission.id}
+                    selected={submission.id === selectedId}
+                    onClick={() => chooseStudent(submission)}
+                    sx={{ borderRadius: 1, mb: 0.5 }}
+                  >
+                    <ListItemText
+                      primary={submission.student_name || submission.student_id || 'Unknown student'}
+                      secondary={`${submission.status} · ${submission.mark_entry_count ?? 0} marks`}
+                    />
+                    <Chip size="small" label={submission.status} color={submission.status === 'absent' ? 'warning' : 'default'} variant="outlined" />
+                  </ListItemButton>
+                ))}
+              </List>
+            </CardContent>
+          </Card>
+
+          <Card variant="outlined" sx={{ flex: 1 }}>
+            <CardContent>
+              {selected ? (
+                <Stack spacing={2}>
+                  <Box>
+                    <Typography variant="h6">{selected.student_name || selected.student_id || 'Unknown student'}</Typography>
+                    <Typography variant="body2" color="text.secondary">Status: {selected.status}</Typography>
+                  </Box>
+                  <Divider />
+                  {markableQuestions.map((q: ExamQuestion) => (
+                    <Stack key={q.id} direction={{ xs: 'column', sm: 'row' }} spacing={1.5} alignItems={{ xs: 'stretch', sm: 'center' }}>
+                      <Box sx={{ minWidth: 150 }}>
+                        <Typography variant="body2" fontWeight={700}>{q.label}</Typography>
+                        <Typography variant="caption" color="text.secondary">/ {q.max_marks} marks</Typography>
+                      </Box>
+                      <TextField
+                        label="Mark"
+                        type="number"
+                        size="small"
+                        inputProps={{ min: 0, max: q.max_marks, step: 0.5 }}
+                        value={marks[q.id] ?? ''}
+                        onChange={(e) => setMarks((prev) => ({ ...prev, [q.id]: e.target.value }))}
+                        sx={{ width: { xs: '100%', sm: 120 } }}
+                      />
+                      <TextField
+                        label="Comment"
+                        size="small"
+                        value={comments[q.id] ?? ''}
+                        onChange={(e) => setComments((prev) => ({ ...prev, [q.id]: e.target.value }))}
+                        sx={{ flex: 1 }}
+                      />
+                    </Stack>
+                  ))}
+                  <Box sx={{ display: 'flex', justifyContent: 'flex-end', gap: 1 }}>
+                    <Button onClick={() => navigate(`/exam-marker/${batchId}/results`)}>Skip to results</Button>
+                    <Button variant="contained" startIcon={<SaveIcon />} onClick={saveSelected} disabled={saving || markableQuestions.length === 0}>
+                      {saving ? 'Saving…' : 'Save marks'}
+                    </Button>
+                  </Box>
+                </Stack>
+              ) : (
+                <Typography color="text.secondary" sx={{ py: 4, textAlign: 'center' }}>No submissions in this batch.</Typography>
+              )}
+            </CardContent>
+          </Card>
+        </Stack>
+      </Stack>
+    </Container>
+  );
+};
+
+export default ExamMarkingPage;

src/pages/exam/ExamResultsPage.tsx

@@ -0,0 +1,177 @@
+import React, { useCallback, useEffect, useMemo, useState } from 'react';
+import { useNavigate, useParams } from 'react-router-dom';
+import {
+  Alert,
+  Box,
+  Button,
+  Chip,
+  CircularProgress,
+  Container,
+  Paper,
+  Stack,
+  Table,
+  TableBody,
+  TableCell,
+  TableContainer,
+  TableHead,
+  TableRow,
+  Typography,
+} from '@mui/material';
+import ArrowBackIcon from '@mui/icons-material/ArrowBack';
+import DownloadIcon from '@mui/icons-material/Download';
+import EditIcon from '@mui/icons-material/Edit';
+
+import { examRepository } from '../../services/exam/examRepository';
+import type { BatchResultsResponse } from '../../types/exam.types';
+
+function formatMark(value: number | null | undefined) {
+  return value === null || value === undefined ? '' : String(value);
+}
+
+const ExamResultsPage: React.FC = () => {
+  const { batchId } = useParams<{ batchId: string }>();
+  const navigate = useNavigate();
+  const [data, setData] = useState<BatchResultsResponse | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [downloading, setDownloading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const load = useCallback(async () => {
+    if (!batchId) return;
+    setLoading(true);
+    setError(null);
+    try {
+      setData(await examRepository.getBatchResults(batchId));
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    } finally {
+      setLoading(false);
+    }
+  }, [batchId]);
+
+  useEffect(() => {
+    void load();
+  }, [load]);
+
+  const summary = useMemo(() => {
+    const rows = data?.results ?? [];
+    const presentTotals = rows
+      .map((r) => r.total)
+      .filter((v): v is number => typeof v === 'number');
+    const average = presentTotals.length
+      ? presentTotals.reduce((sum, v) => sum + v, 0) / presentTotals.length
+      : null;
+    return {
+      total: rows.length,
+      absent: rows.filter((r) => r.status === 'absent' && r.total === null).length,
+      marked: rows.filter((r) => r.total !== null).length,
+      average,
+    };
+  }, [data]);
+
+  const downloadCsv = async () => {
+    if (!batchId) return;
+    setDownloading(true);
+    setError(null);
+    try {
+      const csv = await examRepository.getBatchCsv(batchId);
+      const blob = new Blob([csv], { type: 'text/csv;charset=utf-8' });
+      const url = URL.createObjectURL(blob);
+      const a = document.createElement('a');
+      a.href = url;
+      a.download = `batch-${batchId}.csv`;
+      document.body.appendChild(a);
+      a.click();
+      a.remove();
+      URL.revokeObjectURL(url);
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    } finally {
+      setDownloading(false);
+    }
+  };
+
+  if (loading) {
+    return <Box sx={{ display: 'flex', justifyContent: 'center', py: 8 }}><CircularProgress /></Box>;
+  }
+
+  if (error || !data) {
+    return (
+      <Container maxWidth="lg" sx={{ py: 4 }}>
+        <Alert severity="error">{error || 'Results not found'}</Alert>
+        <Button sx={{ mt: 2 }} startIcon={<ArrowBackIcon />} onClick={() => navigate('/exam-marker')}>
+          Back to Exam Marker
+        </Button>
+      </Container>
+    );
+  }
+
+  return (
+    <Container maxWidth="xl" sx={{ py: 4 }}>
+      <Stack spacing={3}>
+        <Box sx={{ display: 'flex', alignItems: 'flex-start', justifyContent: 'space-between', gap: 2, flexWrap: 'wrap' }}>
+          <Box>
+            <Button size="small" startIcon={<ArrowBackIcon />} onClick={() => navigate('/exam-marker')} sx={{ mb: 1 }}>
+              Exam Marker
+            </Button>
+            <Typography variant="h4" component="h1" fontWeight={700}>
+              {data.batch.title || 'Exam results'}
+            </Typography>
+            <Typography variant="body2" color="text.secondary">
+              Batch {data.batch.id} · created {new Date(data.batch.created_at).toLocaleDateString('en-GB')}
+            </Typography>
+          </Box>
+          <Stack direction="row" spacing={1}>
+            <Button variant="outlined" startIcon={<EditIcon />} onClick={() => navigate(`/exam-marker/${data.batch.id}/mark`)}>
+              Mark
+            </Button>
+            <Button variant="contained" startIcon={<DownloadIcon />} onClick={downloadCsv} disabled={downloading}>
+              {downloading ? 'Preparing…' : 'Download CSV'}
+            </Button>
+          </Stack>
+        </Box>
+
+        <Stack direction="row" spacing={1} flexWrap="wrap" useFlexGap>
+          <Chip label={`${summary.total} students`} />
+          <Chip label={`${summary.marked} with marks`} color="success" variant="outlined" />
+          <Chip label={`${summary.absent} absent/no scan`} color="warning" variant="outlined" />
+          <Chip label={`Class average ${summary.average === null ? '—' : summary.average.toFixed(1)}`} color="primary" />
+        </Stack>
+
+        <TableContainer component={Paper} variant="outlined">
+          <Table size="small" stickyHeader>
+            <TableHead>
+              <TableRow>
+                <TableCell>Student</TableCell>
+                <TableCell>Status</TableCell>
+                {data.questions.map((q) => (
+                  <TableCell key={q.id} align="right">{q.label} / {q.max_marks}</TableCell>
+                ))}
+                <TableCell align="right">Total</TableCell>
+              </TableRow>
+            </TableHead>
+            <TableBody>
+              {data.results.map((row) => (
+                <TableRow key={row.submission_id} sx={row.status === 'absent' && row.total === null ? { opacity: 0.72 } : undefined}>
+                  <TableCell>
+                    <Typography variant="body2" fontWeight={600}>{row.student_name || row.student_id || 'Unknown student'}</Typography>
+                    {row.student_id && <Typography variant="caption" color="text.secondary">{row.student_id}</Typography>}
+                  </TableCell>
+                  <TableCell>
+                    <Chip size="small" label={row.status || 'unknown'} color={row.status === 'absent' ? 'warning' : 'default'} variant="outlined" />
+                  </TableCell>
+                  {data.questions.map((q) => (
+                    <TableCell key={q.id} align="right">{formatMark(row.marks[q.id])}</TableCell>
+                  ))}
+                  <TableCell align="right"><strong>{formatMark(row.total)}</strong></TableCell>
+                </TableRow>
+              ))}
+            </TableBody>
+          </Table>
+        </TableContainer>
+      </Stack>
+    </Container>
+  );
+};
+
+export default ExamResultsPage;

src/pages/exam/ResultsWidget.tsx

@@ -0,0 +1,169 @@
+import React, { useCallback, useEffect, useMemo, useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import {
+  Alert,
+  Box,
+  Button,
+  Card,
+  CardContent,
+  Chip,
+  CircularProgress,
+  MenuItem,
+  Stack,
+  TextField,
+  Typography,
+} from '@mui/material';
+import AssessmentIcon from '@mui/icons-material/Assessment';
+import PlayArrowIcon from '@mui/icons-material/PlayArrow';
+import TableChartIcon from '@mui/icons-material/TableChart';
+
+import { examRepository } from '../../services/exam/examRepository';
+import type { BatchResultsResponse, ExamTemplate, MarkingBatch } from '../../types/exam.types';
+
+interface ResultsWidgetProps {
+  classId: string;
+  className?: string;
+}
+
+function averageFromResults(results: BatchResultsResponse | null) {
+  const totals = (results?.results ?? [])
+    .map((row) => row.total)
+    .filter((value): value is number => typeof value === 'number');
+  if (!totals.length) return null;
+  return totals.reduce((sum, value) => sum + value, 0) / totals.length;
+}
+
+const ResultsWidget: React.FC<ResultsWidgetProps> = ({ classId, className }) => {
+  const navigate = useNavigate();
+  const [templates, setTemplates] = useState<ExamTemplate[]>([]);
+  const [batches, setBatches] = useState<MarkingBatch[]>([]);
+  const [latestResults, setLatestResults] = useState<BatchResultsResponse | null>(null);
+  const [selectedTemplateId, setSelectedTemplateId] = useState('');
+  const [loading, setLoading] = useState(true);
+  const [creating, setCreating] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const load = useCallback(async () => {
+    setLoading(true);
+    setError(null);
+    try {
+      const [nextTemplates, nextBatches] = await Promise.all([
+        examRepository.listTemplates(),
+        examRepository.listBatches(),
+      ]);
+      const classBatches = nextBatches
+        .filter((batch) => batch.class_id === classId)
+        .sort((a, b) => new Date(b.created_at).getTime() - new Date(a.created_at).getTime());
+      setTemplates(nextTemplates);
+      setSelectedTemplateId((current) => current || nextTemplates[0]?.id || '');
+      setBatches(classBatches);
+      setLatestResults(classBatches[0] ? await examRepository.getBatchResults(classBatches[0].id) : null);
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    } finally {
+      setLoading(false);
+    }
+  }, [classId]);
+
+  useEffect(() => {
+    void load();
+  }, [load]);
+
+  const latestBatch = batches[0] ?? null;
+  const average = useMemo(() => averageFromResults(latestResults), [latestResults]);
+  const absent = latestResults?.results.filter((row) => row.status === 'absent' && row.total === null).length ?? 0;
+
+  const createBatch = async () => {
+    if (!selectedTemplateId) return;
+    setCreating(true);
+    setError(null);
+    try {
+      const template = templates.find((item) => item.id === selectedTemplateId);
+      const created = await examRepository.createBatch({
+        template_id: selectedTemplateId,
+        class_id: classId,
+        title: `${className || 'Class'} · ${template?.title || 'Exam'}`,
+      });
+      navigate(`/exam-marker/${created.id}/mark`);
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    } finally {
+      setCreating(false);
+    }
+  };
+
+  return (
+    <Card variant="outlined" sx={{ mb: 2 }}>
+      <CardContent>
+        <Stack spacing={2}>
+          <Box sx={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', gap: 1, flexWrap: 'wrap' }}>
+            <Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
+              <AssessmentIcon color="primary" />
+              <Box>
+                <Typography variant="h6">Assessment results</Typography>
+                <Typography variant="caption" color="text.secondary">Last exam summary for this class</Typography>
+              </Box>
+            </Box>
+            {loading && <CircularProgress size={22} />}
+          </Box>
+
+          {error && <Alert severity="warning" onClose={() => setError(null)}>{error}</Alert>}
+
+          {latestBatch ? (
+            <Stack spacing={1.5}>
+              <Box>
+                <Typography variant="body2" fontWeight={700}>{latestBatch.title || 'Exam batch'}</Typography>
+                <Typography variant="caption" color="text.secondary">
+                  {new Date(latestBatch.created_at).toLocaleDateString('en-GB')}
+                </Typography>
+              </Box>
+              <Stack direction="row" spacing={1} flexWrap="wrap" useFlexGap>
+                <Chip size="small" color="primary" label={`Average ${average === null ? '—' : average.toFixed(1)}`} />
+                <Chip size="small" variant="outlined" label={`${latestResults?.results.length ?? 0} students`} />
+                <Chip size="small" color="warning" variant="outlined" label={`${absent} absent`} />
+              </Stack>
+              <Stack direction="row" spacing={1}>
+                <Button size="small" variant="contained" startIcon={<TableChartIcon />} onClick={() => navigate(`/exam-marker/${latestBatch.id}/results`)}>
+                  View results
+                </Button>
+                <Button size="small" variant="outlined" onClick={() => navigate(`/exam-marker/${latestBatch.id}/mark`)}>
+                  Continue marking
+                </Button>
+              </Stack>
+            </Stack>
+          ) : !loading ? (
+            <Typography variant="body2" color="text.secondary">
+              No exam batches have been created for this class yet.
+            </Typography>
+          ) : null}
+
+          <Stack direction={{ xs: 'column', sm: 'row' }} spacing={1} alignItems={{ xs: 'stretch', sm: 'center' }}>
+            <TextField
+              select
+              size="small"
+              label="Template"
+              value={selectedTemplateId}
+              onChange={(e) => setSelectedTemplateId(e.target.value)}
+              disabled={!templates.length || creating}
+              sx={{ minWidth: 260 }}
+            >
+              {templates.map((template) => (
+                <MenuItem key={template.id} value={template.id}>{template.title}</MenuItem>
+              ))}
+            </TextField>
+            <Button
+              variant="outlined"
+              startIcon={<PlayArrowIcon />}
+              onClick={createBatch}
+              disabled={!selectedTemplateId || creating}
+            >
+              {creating ? 'Creating…' : 'Create marking batch'}
+            </Button>
+          </Stack>
+        </Stack>
+      </CardContent>
+    </Card>
+  );
+};
+
+export default ResultsWidget;

src/pages/exam/index.ts

@@ -1,3 +1,6 @@
-export { default as ExamDashboardPage } from ./ExamDashboardPage;
-export { default as ExamTemplateSetupPage } from ./setup/ExamTemplateSetupPage;
-export { default as MarkSchemePage } from ./MarkSchemePage;
+export { default as ExamDashboardPage } from './ExamDashboardPage';
+export { default as ExamTemplateSetupPage } from './setup/ExamTemplateSetupPage';
+export { default as MarkSchemePage } from './MarkSchemePage';
+export { default as ExamMarkingPage } from './ExamMarkingPage';
+export { default as ExamResultsPage } from './ExamResultsPage';
+export { default as ResultsWidget } from './ResultsWidget';

src/pages/exam/setup/ExamTemplateSetupPage.tsx

@@ -1,8 +1,9 @@
 
 import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import { useNavigate, useParams } from 'react-router-dom'
-import { Alert, Box, Button, Chip, CircularProgress, Divider, Paper, Snackbar, Stack, Tooltip, Typography, useTheme } from '@mui/material'
+import { Alert, Box, Button, Chip, CircularProgress, Collapse, Divider, IconButton, Paper, Snackbar, Stack, Tooltip, Typography, useTheme } from '@mui/material'
 import ArrowBackIcon from '@mui/icons-material/ArrowBack'
+import HelpOutlineIcon from '@mui/icons-material/HelpOutline'
 import SaveIcon from '@mui/icons-material/Save'
 import MouseIcon from '@mui/icons-material/Mouse'
 import '@tldraw/tldraw/tldraw.css'
@@ -29,7 +30,7 @@ const TOOLS = [
   { id: SHAPE_TYPES.furniture, label: 'Furniture', icon: canvasShapePalette.furniture.icon, tip: 'Mark page numbers, margins, blank space, or decoration to exclude from extraction.', color: 'inherit' as const },
 ]
 
-const PAGE_START_X = 260
+const PAGE_START_X = 0
 const PDF_PAGE_IDS_PREFIX = 'pdf-page-'
 
 function pageGeometryFromImages(pages: PdfPageImage[]): CanvasPageGeometry[] {
@@ -41,6 +42,22 @@ function pageGeometryFromImages(pages: PdfPageImage[]): CanvasPageGeometry[] {
   })
 }
 
+function applyDocViewConstraints(editor: Editor, pages: PdfPageImage[]) {
+  const maxW = pages.length ? Math.max(...pages.map((p) => p.width)) : PAGE_WIDTH
+  const totalH = pages.reduce((sum, p) => sum + p.height, 0) || PAGE_HEIGHT
+  editor.setCameraOptions({
+    constraints: {
+      bounds: { x: -64, y: -64, w: maxW + 128, h: totalH + 128 },
+      padding: { x: 64, y: 64 },
+      origin: { x: 0.5, y: 0 },
+      initialZoom: 'fit-x-100',
+      baseZoom: 'default',
+      behavior: 'contain',
+    },
+    isLocked: false,
+  })
+}
+
 function apiMessage(err: unknown): { message: string; conflict: boolean } {
   if (axios.isAxiosError(err)) {
     const detail = (err.response?.data as { detail?: string } | undefined)?.detail
@@ -88,10 +105,15 @@ function modelFromTLShape(shape: TLShape): ExamCanvasShapeModel | null {
   }
 }
 
+function bringDomainShapesToFront(editor: Editor) {
+  const ids = editor.getCurrentPageShapes().filter((s) => !!shapeTypeToKind(s.type)).map((s) => s.id)
+  if (ids.length) try { editor.bringToFront(ids as any) } catch { /* */ }
+}
+
 function loadShapes(editor: Editor, models: ExamCanvasShapeModel[]) {
+  if (!models.length) return
   const existing = editor.getCurrentPageShapes().filter((s) => shapeTypeToKind(s.type)).map((s) => s.id)
   if (existing.length) editor.deleteShapes(existing)
-  if (!models.length) return
   editor.createShapes(models.map((m) => ({
     id: createShapeId(m.id),
     type: SHAPE_TYPES[m.kind],
@@ -117,8 +139,7 @@ function syncPdfPages(editor: Editor, pages: PdfPageImage[]) {
       props: { w: geometry.w, h: geometry.h, src: page.src, pageNumber: geometry.pageNumber },
     } as any
   }))
-  const ids = geometries.map((geometry) => createShapeId(PDF_PAGE_IDS_PREFIX + geometry.pageNumber))
-  try { editor.sendToBack(ids as any) } catch { /* tldraw 3 keeps creation order behind later region shapes */ }
+  // z-order is enforced by the caller via bringDomainShapesToFront
 }
 
 function seedGuide(editor: Editor) {
@@ -148,6 +169,7 @@ const ExamTemplateSetupInner: React.FC = () => {
   const [activeTool, setActiveTool] = useState('select')
   const [pdfStatus, setPdfStatus] = useState<'loading' | 'ready' | 'missing' | 'error'>('loading')
   const [pdfError, setPdfError] = useState<string | null>(null)
+  const [guideOpen, setGuideOpen] = useState(false)
 
   const load = useCallback(async () => {
     if (!templateId) return
@@ -170,8 +192,9 @@ const ExamTemplateSetupInner: React.FC = () => {
             const shapeId = createShapeId(PDF_PAGE_IDS_PREFIX + newPage.pageNumber)
             if (!ed.getCurrentPageShapes().find((s) => s.id === shapeId)) {
               ed.createShapes([{ id: shapeId, type: PDF_PAGE_SHAPE_TYPE, x: geometry.x, y: geometry.y, isLocked: true, props: { w: geometry.w, h: geometry.h, src: newPage.src, pageNumber: newPage.pageNumber } } as any])
-              try { ed.sendToBack([shapeId as any]) } catch { /* */ }
+              bringDomainShapesToFront(ed)
             }
+            applyDocViewConstraints(ed, partialPages)
           }
           setPdfStatus('ready')
         })
@@ -188,6 +211,9 @@ const ExamTemplateSetupInner: React.FC = () => {
       if (editor) {
         syncPdfPages(editor, pages)
         loadShapes(editor, shapesFromTemplate(detail, geometries))
+        bringDomainShapesToFront(editor)
+        applyDocViewConstraints(editor, pages)
+        editor.resetZoom()
       }
       setDirty(false)
     } catch (e) {
@@ -243,60 +269,83 @@ const ExamTemplateSetupInner: React.FC = () => {
   )), [activeTool])
 
   return (
-    <Box sx={{ position: 'fixed', inset: 0, zIndex: (t) => t.zIndex.drawer + 20, bgcolor: 'background.default' }}>
-      <Box sx={{ position: 'absolute', inset: 0, '& .tlui-layout': { display: 'none' } }} data-testid="exam-template-setup-canvas">
-        <Tldraw
-          shapeUtils={examCanvasShapeUtils as any}
-          tools={examCanvasTools as any}
-          hideUi
-          inferDarkMode={theme.palette.mode === 'dark'}
-          autoFocus
-          onMount={(editor) => {
-            editorRef.current = editor
-            editor.user.updateUserPreferences({ colorScheme: theme.palette.mode === 'dark' ? 'dark' : 'light' })
-            editor.store.listen(() => setDirty(true), { scope: 'document' })
-            if (template) loadShapes(editor, shapesFromTemplate(template, pageGeometriesRef.current)); else seedGuide(editor)
-          }}
-        />
+    <Box sx={{ position: 'fixed', inset: 0, zIndex: (t) => t.zIndex.drawer + 20, bgcolor: 'background.default', display: 'flex', flexDirection: 'column' }}>
+
+      {/* Top bar — single compact line */}
+      <Paper elevation={8} sx={{ px: 1.5, py: 0.75, display: 'flex', alignItems: 'center', gap: 1, bgcolor: 'background.paper', borderRadius: 0, flexShrink: 0 }}>
+        <Tooltip title="Back to exam marker">
+          <IconButton onClick={() => navigate('/exam-marker')} size="small"><ArrowBackIcon fontSize="small" /></IconButton>
+        </Tooltip>
+        <Divider orientation="vertical" flexItem />
+        <Typography variant="subtitle2" noWrap sx={{ flex: 1, minWidth: 0 }}>{template?.title ?? 'Template setup'}</Typography>
+        <Chip size="small" color={dirty ? 'warning' : 'success'} label={dirty ? 'Unsaved' : 'Saved'} />
+        <Button size="small" variant="contained" startIcon={saving ? <CircularProgress size={14} color="inherit" /> : <SaveIcon fontSize="small" />} onClick={save} disabled={saving || loading || !template}>Save</Button>
+      </Paper>
+
+      {/* Body row */}
+      <Box sx={{ flex: 1, display: 'flex', overflow: 'hidden' }}>
+
+        {/* Left tool sidebar */}
+        <Paper elevation={4} sx={{ width: 160, flexShrink: 0, p: 1.25, borderRadius: 0, bgcolor: 'background.paper', overflowY: 'auto', display: 'flex', flexDirection: 'column', borderRight: 1, borderColor: 'divider' }}>
+          <Stack spacing={1}>{toolButtons}</Stack>
+        </Paper>
+
+        {/* Canvas area */}
+        <Box sx={{ flex: 1, position: 'relative', overflow: 'hidden' }} data-testid="exam-template-setup-canvas">
+          <Box sx={{ position: 'absolute', inset: 0, '& .tlui-layout': { display: 'none' } }}>
+            <Tldraw
+              shapeUtils={examCanvasShapeUtils as any}
+              tools={examCanvasTools as any}
+              hideUi
+              inferDarkMode={theme.palette.mode === 'dark'}
+              autoFocus
+              onMount={(editor) => {
+                editorRef.current = editor
+                editor.user.updateUserPreferences({ colorScheme: theme.palette.mode === 'dark' ? 'dark' : 'light' })
+                editor.store.listen(() => setDirty(true), { scope: 'document' })
+                applyDocViewConstraints(editor, [])
+                editor.resetZoom()
+                if (template) loadShapes(editor, shapesFromTemplate(template, pageGeometriesRef.current)); else seedGuide(editor)
+                bringDomainShapesToFront(editor)
+              }}
+            />
+          </Box>
+
+          {/* Guide toggle */}
+          <Tooltip title={guideOpen ? 'Hide guide' : 'Show setup guide'} placement="left">
+            <IconButton onClick={() => setGuideOpen((v) => !v)} size="small" sx={{ position: 'absolute', right: 16, bottom: 16, zIndex: 1001, bgcolor: 'background.paper', boxShadow: 2, '&:hover': { bgcolor: 'background.paper' } }}>
+              <HelpOutlineIcon fontSize="small" color={guideOpen ? 'primary' : 'action'} />
+            </IconButton>
+          </Tooltip>
+
+          {/* Guide panel — collapsible */}
+          <Collapse in={guideOpen} sx={{ position: 'absolute', right: 16, bottom: 48, zIndex: 1000, maxWidth: 440 }}>
+            <Paper elevation={4} sx={{ p: 2, borderRadius: 3, bgcolor: 'background.paper' }}>
+              <Typography variant="subtitle2" gutterBottom>Setup guide</Typography>
+              <Typography variant="body2" color="text.secondary" sx={{ mb: 1 }}>
+                1) Boundary start/end lines define each main question. 2) Draw amber Part boxes for markable sub-questions. 3) Draw coloured Response, Context, Q Number, Mark Area, Reference, and Furniture regions; Save derives parent links by containment.
+              </Typography>
+              <Stack direction="row" spacing={0.75} useFlexGap flexWrap="wrap" sx={{ my: 1 }}>
+                {(['boundary', 'part', 'response', 'context', 'question_number', 'mark_area', 'reference', 'furniture'] as const).map((kind) => {
+                  const p = canvasShapePalette[kind]
+                  return <Chip key={kind} size="small" label={`${p.icon} ${p.label}`} sx={{ borderColor: p.stroke, color: p.stroke, bgcolor: p.fill, fontWeight: 700 }} variant="outlined" />
+                })}
+              </Stack>
+              <Divider sx={{ my: 1 }} />
+              <Typography variant="caption" color="text.secondary" display="block">Multi-page boundary pairing</Typography>
+              <Typography variant="body2" sx={{ fontWeight: 700 }}>Draw "Q start" on page N, then "Q end" on a later page; save pairs boundaries by reading order into one question span.</Typography>
+              <Typography variant="caption" color={pdfStatus === 'ready' ? 'success.main' : pdfStatus === 'error' ? 'error.main' : 'text.secondary'} sx={{ display: 'block', mt: 1 }}>
+                PDF: {pdfStatus === 'ready' ? 'loaded' : pdfStatus === 'loading' ? 'loading…' : pdfStatus === 'missing' ? 'no source PDF' : pdfError ?? 'failed'}
+              </Typography>
+            </Paper>
+          </Collapse>
+
+          {/* Conflict alert */}
+          {conflict && <Alert severity="warning" sx={{ position: 'absolute', top: 16, right: 16, maxWidth: 560, zIndex: 1001 }} onClose={() => setConflict(null)}>{conflict}</Alert>}
+        </Box>
       </Box>
 
-      <Paper elevation={8} sx={{ position: 'absolute', top: 12, left: 12, right: 12, px: 2, py: 1.25, display: 'flex', alignItems: 'center', gap: 1.5, borderRadius: 3, bgcolor: 'background.paper' }}>
-        <Button startIcon={<ArrowBackIcon />} onClick={() => navigate('/exam-marker')} size="small">Back</Button>
-        <Divider orientation="vertical" flexItem />
-        <Box sx={{ minWidth: 0, flex: 1 }}>
-          <Typography variant="subtitle1" noWrap>{template?.title ?? 'Template setup'}</Typography>
-          <Typography variant="caption" color="text.secondary">Exam Marker › Setup · coloured tools map to persisted regions; boundary start/end pairs can span pages.</Typography>
-        </Box>
-        <Chip size="small" color={dirty ? 'warning' : 'success'} label={dirty ? 'Unsaved' : 'Saved'} />
-        <Button variant="contained" startIcon={saving ? <CircularProgress size={16} color="inherit" /> : <SaveIcon />} onClick={save} disabled={saving || loading || !template}>Save</Button>
-      </Paper>
-
-      <Paper elevation={8} sx={{ position: 'absolute', top: 92, left: 12, p: 1.25, borderRadius: 3, bgcolor: 'background.paper' }}>
-        <Stack spacing={1}>{toolButtons}</Stack>
-      </Paper>
-
-      <Paper elevation={4} sx={{ position: 'absolute', right: 16, bottom: 16, maxWidth: 460, p: 2, borderRadius: 3, bgcolor: 'background.paper' }}>
-        <Typography variant="subtitle2" gutterBottom>Setup guide</Typography>
-        <Typography variant="body2" color="text.secondary" sx={{ mb: 1 }}>
-          1) Boundary start/end lines define each main question. 2) Draw amber Part boxes for markable sub-questions. 3) Draw coloured Response, Context, Q Number, Mark Area, Reference, and Furniture regions; Save derives parent links by containment.
-        </Typography>
-        <Stack direction="row" spacing={0.75} useFlexGap flexWrap="wrap" sx={{ my: 1 }}>
-          {(['boundary', 'part', 'response', 'context', 'question_number', 'mark_area', 'reference', 'furniture'] as const).map((kind) => {
-            const p = canvasShapePalette[kind]
-            return <Chip key={kind} size="small" label={`${p.icon} ${p.label}`} sx={{ borderColor: p.stroke, color: p.stroke, bgcolor: p.fill, fontWeight: 700 }} variant="outlined" />
-          })}
-        </Stack>
-        <Divider sx={{ my: 1 }} />
-        <Typography variant="caption" color="text.secondary" display="block">Multi-page boundary pairing</Typography>
-        <Typography variant="body2" sx={{ fontWeight: 700 }}>Draw “Q start” on page N, then “Q end” on a later page; save pairs boundaries by reading order into one question span.</Typography>
-        <Typography variant="caption" color="text.secondary" display="block" sx={{ mt: 0.75 }}>Open design choices resolved for v1: labels use “Q start/end”; persistent Attached pills confirm containment; rectangles stay simple for dense multi-column papers; Back button remains explicit.</Typography>
-        <Typography variant="caption" color={pdfStatus === 'ready' ? 'success.main' : pdfStatus === 'error' ? 'error.main' : 'text.secondary'} sx={{ display: 'block', mt: 1 }}>
-          PDF backdrop: {pdfStatus === 'ready' ? 'loaded and locked behind regions' : pdfStatus === 'loading' ? 'loading…' : pdfStatus === 'missing' ? 'no source PDF for this template' : pdfError ?? 'failed to load'}
-        </Typography>
-      </Paper>
-
-      {loading && <Box sx={{ position: 'absolute', inset: 0, display: 'grid', placeItems: 'center', bgcolor: 'rgba(15,23,42,.18)' }}><CircularProgress /></Box>}
-      {conflict && <Alert severity="warning" sx={{ position: 'absolute', top: 86, right: 16, maxWidth: 560 }} onClose={() => setConflict(null)}>{conflict}</Alert>}
+      {loading && <Box sx={{ position: 'absolute', inset: 0, display: 'grid', placeItems: 'center', bgcolor: 'rgba(15,23,42,.18)', zIndex: 10 }}><CircularProgress /></Box>}
       <Snackbar open={!!error} autoHideDuration={8000} onClose={() => setError(null)}><Alert severity="error" onClose={() => setError(null)}>{error}</Alert></Snackbar>
     </Box>
   )

src/pages/exam/setup/examCanvasShapes.tsx

@@ -1,6 +1,8 @@
 
 import React from 'react'
-import { BaseBoxShapeTool, BaseBoxShapeUtil, HTMLContainer, T, TLBaseBoxShape, toDomPrecision } from '@tldraw/tldraw'
+import { BaseBoxShapeTool, BaseBoxShapeUtil, Edge2d, HTMLContainer, ShapeUtil, T, TLBaseBoxShape, Vec, toDomPrecision } from '@tldraw/tldraw'
+import type { TLHandle } from '@tldraw/tldraw'
+import { PAGE_WIDTH } from '../../../utils/exam-canvas/model'
 import type { ExamCanvasRegionKind, ExamCanvasShapeKind } from '../../../utils/exam-canvas/model'
 
 export const PDF_PAGE_SHAPE_TYPE = 'exam-pdf-page'
@@ -65,10 +67,28 @@ const shapeCss = `
 [data-color-mode="dark"] .exam-canvas-shape__pill, .tl-theme__dark .exam-canvas-shape__pill { background: rgba(15,23,42,.88); color: var(--exam-stroke); box-shadow: 0 1px 5px rgba(0,0,0,.35); }
 `
 
+function renderBoundaryLine(shape: ExamCanvasTLShape) {
+  const p = canvasShapePalette.boundary
+  const lineY = Math.max(1, Math.min(shape.props.h - 1, shape.props.h / 2))
+  return (
+    <HTMLContainer id={shape.id} style={{ width: toDomPrecision(shape.props.w), height: toDomPrecision(shape.props.h), overflow: 'visible', pointerEvents: 'all' }}>
+      <style>{shapeCss}</style>
+      <svg width={toDomPrecision(shape.props.w)} height={toDomPrecision(shape.props.h)} aria-label={`${p.label}: ${p.role}`} style={{ display: 'block', overflow: 'visible' }}>
+        <line x1={0} x2={toDomPrecision(shape.props.w)} y1={lineY} y2={lineY} stroke="var(--exam-stroke)" strokeWidth={2.5} strokeDasharray={p.dash} strokeLinecap="round" style={{ '--exam-light-stroke': p.stroke, '--exam-dark-stroke': p.darkStroke } as React.CSSProperties} />
+      </svg>
+      <span className="exam-canvas-shape__pill" style={{ position: 'absolute', left: 8, top: -24, fontSize: 11, fontWeight: 900, textTransform: 'uppercase', letterSpacing: 0.6, borderRadius: 999, padding: '2px 7px', display: 'inline-flex', alignItems: 'center', gap: 5, color: p.stroke }}>
+        <span aria-hidden="true">{p.icon}</span>
+        {shape.props.label || p.label}
+      </span>
+    </HTMLContainer>
+  )
+}
+
 function renderShape(shape: ExamCanvasTLShape) {
   const kind = shape.props.kind
   const p = canvasShapePalette[kind] ?? canvasShapePalette.response
   const isBoundary = kind === 'boundary'
+  if (isBoundary) return renderBoundaryLine(shape)
   return (
     <HTMLContainer id={shape.id} style={{ width: toDomPrecision(shape.props.w), height: toDomPrecision(shape.props.h), pointerEvents: 'all' }}>
       <style>{shapeCss}</style>
@@ -121,7 +141,55 @@ class PdfPageUtil extends BaseBoxShapeUtil<ExamPdfPageTLShape> {
   }
   override indicator(shape: ExamPdfPageTLShape) { return ind(shape) }
 }
-class BoundaryUtil extends BaseBoxShapeUtil<ExamCanvasTLShape> { static override type = SHAPE_TYPES.boundary; static override props = sharedProps; override getDefaultProps(){ return defaultProps('boundary', 680, 8) }; override component(shape: ExamCanvasTLShape){ return renderShape(shape) }; override indicator(shape: ExamCanvasTLShape){ return ind(shape) } }
+class BoundaryUtil extends ShapeUtil<ExamCanvasTLShape> {
+  static override type = SHAPE_TYPES.boundary
+  static override props = sharedProps
+
+  override getDefaultProps() { return defaultProps('boundary', PAGE_WIDTH, 8) }
+  override canEdit() { return false }
+  override canResize() { return false }
+  override canBind() { return false }
+  override hideResizeHandles() { return true }
+  override hideRotateHandle() { return true }
+  override hideSelectionBoundsBg() { return true }
+
+  private pageSpanForY(y: number) {
+    const pages = this.editor.getCurrentPageShapes().filter((shape): shape is ExamPdfPageTLShape => shape.type === PDF_PAGE_SHAPE_TYPE)
+    const hit = pages.find((page) => y >= page.y && y <= page.y + page.props.h)
+    const nearest = hit ?? pages.reduce<ExamPdfPageTLShape | null>((best, page) => {
+      if (!best) return page
+      const pageDy = Math.min(Math.abs(y - page.y), Math.abs(y - (page.y + page.props.h)))
+      const bestDy = Math.min(Math.abs(y - best.y), Math.abs(y - (best.y + best.props.h)))
+      return pageDy < bestDy ? page : best
+    }, null)
+    return nearest ? { x: nearest.x, w: nearest.props.w } : { x: 0, w: PAGE_WIDTH }
+  }
+
+  private normalize(shape: ExamCanvasTLShape): ExamCanvasTLShape {
+    const span = this.pageSpanForY(shape.y + shape.props.h / 2)
+    return { ...shape, x: span.x, rotation: 0, props: { ...shape.props, w: span.w, h: 8, kind: 'boundary' } }
+  }
+
+  override getGeometry(shape: ExamCanvasTLShape) {
+    const y = shape.props.h / 2
+    return new Edge2d({ start: new Vec(0, y), end: new Vec(shape.props.w, y) })
+  }
+
+  override getHandles(shape: ExamCanvasTLShape): TLHandle[] {
+    return [{ id: 'y', type: 'vertex', index: 'a1' as any, x: shape.props.w / 2, y: shape.props.h / 2, canSnap: false }]
+  }
+
+  override onBeforeCreate(next: ExamCanvasTLShape) { return this.normalize(next) }
+  override onBeforeUpdate(_prev: ExamCanvasTLShape, next: ExamCanvasTLShape) { return this.normalize(next) }
+  override onTranslate(initial: ExamCanvasTLShape, current: ExamCanvasTLShape): any {
+    return this.normalize({ ...current, x: initial.x })
+  }
+  override onHandleDrag(shape: ExamCanvasTLShape, { handle }: { handle: TLHandle }): any {
+    return this.normalize({ ...shape, y: shape.y + handle.y - shape.props.h / 2 })
+  }
+  override component(shape: ExamCanvasTLShape) { return renderShape(shape) }
+  override indicator(shape: ExamCanvasTLShape) { return <path d={`M 0 ${toDomPrecision(shape.props.h / 2)} L ${toDomPrecision(shape.props.w)} ${toDomPrecision(shape.props.h / 2)}`} /> }
+}
 class PartUtil extends BaseBoxShapeUtil<ExamCanvasTLShape> { static override type = SHAPE_TYPES.part; static override props = sharedProps; override getDefaultProps(){ return defaultProps('part', 420, 170) }; override component(shape: ExamCanvasTLShape){ return renderShape(shape) }; override indicator(shape: ExamCanvasTLShape){ return ind(shape) } }
 function regionUtil(type: string, kind: ExamCanvasRegionKind, w = 360, h = 120) { return class extends BaseBoxShapeUtil<ExamCanvasTLShape> { static override type = type; static override props = sharedProps; override getDefaultProps(){ return defaultProps(kind, w, h) }; override component(shape: ExamCanvasTLShape){ return renderShape(shape) }; override indicator(shape: ExamCanvasTLShape){ return ind(shape) } } }
 

src/pages/timetable/ClassDetailPage.tsx

@@ -9,6 +9,7 @@ import {
     ArrowBack, PersonAdd, PersonRemove, CheckCircle, Cancel, School,
 } from '@mui/icons-material';
 import { useAuth } from '../../contexts/AuthContext';
+import { ResultsWidget } from '../exam';
 
 const API_BASE = import.meta.env.VITE_API_BASE || import.meta.env.VITE_API_URL || '/api';
 
@@ -131,10 +132,20 @@ const ClassDetailPage: React.FC = () => {
         setLoading(true);
         setError(null);
         try {
-            const clsRes = await fetch(`${API_BASE}/classes/${classId}`, {
+            const clsRes = await fetch(`${API_BASE}/database/timetable/classes/${classId}`, {
                 headers: { Authorization: `Bearer ${accessToken}` },
             }).then(r => r.json());
-            if (clsRes.id) setCls(clsRes);
+            if (clsRes.id) {
+                setCls({
+                    ...clsRes,
+                    class_code: clsRes.class_code || clsRes.code,
+                    year_group: clsRes.year_group || clsRes.school_year,
+                    teachers: clsRes.teachers || [],
+                    students: clsRes.students || [],
+                    enrollment_requests: clsRes.enrollment_requests || [],
+                    student_count: clsRes.student_count ?? clsRes.students?.length ?? 0,
+                });
+            }
             else setError(clsRes.detail || 'Class not found');
             const role = bootstrapData?.active_institute?.membership_role || '';
             setIsAdmin(role === 'school_admin' || role === 'department_head');
@@ -174,20 +185,20 @@ const ClassDetailPage: React.FC = () => {
 
     const handleAddStudent = async (studentId: string) => {
         setActionError(null);
-        const res = await apiPost(`/classes/${classId}/students`, { student_id: studentId });
+        const res = await apiPost(`/database/timetable/classes/${classId}/students`, { student_id: studentId });
         if (res.status === 'ok') load();
         else setActionError(res.detail || 'Failed to add student');
     };
 
     const handleRemoveStudent = async (studentId: string) => {
         setActionError(null);
-        await apiDelete(`/classes/${classId}/students/${studentId}`);
+        await apiDelete(`/database/timetable/classes/${classId}/students/${studentId}`);
         load();
     };
 
     const handleEnrollmentResponse = async (requestId: string, action: 'approve' | 'reject') => {
         setActionError(null);
-        const res = await apiPatch(`/classes/${classId}/enrollment-requests/${requestId}`, { action });
+        const res = await apiPatch(`/database/timetable/classes/${classId}/enrollment-requests/${requestId}`, { action });
         if (res.status === 'ok') load();
         else setActionError(res.detail || 'Action failed');
     };
@@ -254,6 +265,8 @@ const ClassDetailPage: React.FC = () => {
                 </Alert>
             )}
 
+            <ResultsWidget classId={cls.id} className={cls.name} />
+
             {/* Tabs */}
             <Tabs value={tab} onChange={(_, v) => setTab(v)} sx={{ borderBottom: 1, borderColor: 'divider', mb: 2 }}>
                 <Tab label={`Students (${cls.student_count})`} />

src/services/exam/examRepository.ts

@@ -11,12 +11,17 @@ import { API_BASE } from '../../config/apiConfig';
 import { logger } from '../../debugConfig';
 import { supabase } from '../../supabaseClient';
 import type {
+  BatchQueueResponse,
+  BatchResultsResponse,
+  CreateBatchPayload,
   CreateTemplatePayload,
   ExamBoundary,
   ExamQuestion,
   ExamResponseArea,
   ExamTemplate,
   ExamTemplateDetail,
+  MarkingBatch,
+  MarkUpsertPayload,
   Neo4jSyncResult,
   PatchQuestionPayload,
   SpecPoint,
@@ -209,6 +214,48 @@ export const examRepository = {
     const res = await axios.post<Neo4jSyncResult>(`${EXAM_BASE}/templates/${templateId}/neo4j-sync`, {}, { headers });
     return res.data;
   },
+
+  async createBatch(payload: CreateBatchPayload): Promise<MarkingBatch> {
+    const headers = await authHeaders();
+    const res = await axios.post<MarkingBatch>(`${EXAM_BASE}/batches`, payload, { headers });
+    return res.data;
+  },
+
+  async listBatches(params: { includeArchived?: boolean; templateId?: string } = {}): Promise<MarkingBatch[]> {
+    const headers = await authHeaders();
+    const res = await axios.get<{ batches: MarkingBatch[] }>(`${EXAM_BASE}/batches`, {
+      headers,
+      params: {
+        include_archived: params.includeArchived ?? false,
+        template_id: params.templateId,
+      },
+    });
+    return res.data.batches ?? [];
+  },
+
+  async getBatchQueue(batchId: string): Promise<BatchQueueResponse> {
+    const headers = await authHeaders();
+    const res = await axios.get<BatchQueueResponse>(`${EXAM_BASE}/batches/${batchId}/queue`, { headers });
+    return res.data;
+  },
+
+  async getBatchResults(batchId: string): Promise<BatchResultsResponse> {
+    const headers = await authHeaders();
+    const res = await axios.get<BatchResultsResponse>(`${EXAM_BASE}/batches/${batchId}/results`, { headers });
+    return res.data;
+  },
+
+  async getBatchCsv(batchId: string): Promise<string> {
+    const headers = await authHeaders();
+    const res = await axios.get<string>(`${EXAM_BASE}/batches/${batchId}/csv`, { headers, responseType: 'text' });
+    return res.data;
+  },
+
+  async upsertMark(markId: string, payload: MarkUpsertPayload): Promise<unknown> {
+    const headers = await authHeaders();
+    const res = await axios.put(`${EXAM_BASE}/marks/${markId}`, payload, { headers });
+    return res.data;
+  },
 };
 
 export default examRepository;

src/types/exam.types.ts

@@ -4,7 +4,7 @@
  * the shared UUIDs (template/question/region ids, exam_code).
  */
 
-export type ExamTemplateStatus = draft | ready | archived;
+export type ExamTemplateStatus = 'draft' | 'ready' | 'archived';
 
 export interface ExamTemplate {
   id: string;
@@ -31,7 +31,7 @@ export interface CreateTemplatePayload {
   institute_id?: string;
 }
 
-export type MarkSchemeType = points | levels | parts | checklist | free;
+export type MarkSchemeType = 'points' | 'levels' | 'parts' | 'checklist' | 'free';
 
 export interface MarkSchemePoint {
   mark: number;
@@ -92,12 +92,12 @@ export interface ExamQuestion {
 }
 
 export type ExamResponseAreaKind =
-  | response
-  | context
-  | question_number
-  | mark_area
-  | reference
-  | furniture;
+  | 'response'
+  | 'context'
+  | 'question_number'
+  | 'mark_area'
+  | 'reference'
+  | 'furniture';
 
 export interface ExamResponseArea {
   id: string;
@@ -108,7 +108,7 @@ export interface ExamResponseArea {
   kind: ExamResponseAreaKind;
   response_form: string | null;
   context_type?: string | null;
-  source: manual | ai;
+  source: 'manual' | 'ai';
   confirmed: boolean;
   confidence: number | null;
 }
@@ -121,7 +121,7 @@ export interface ExamBoundary {
   page_index: number;
   y: number;
   bounds: Record<string, number> | null;
-  source: manual | ai;
+  source: 'manual' | 'ai';
   confirmed: boolean;
 }
 
@@ -131,11 +131,57 @@ export interface ExamTemplateDetail extends ExamTemplate {
   boundaries: ExamBoundary[];
 }
 
+
+export interface TemplateReplacePayload {
+  meta?: {
+    title?: string;
+    subject?: string;
+    page_count?: number;
+    status?: ExamTemplateStatus;
+  };
+  questions: Array<{
+    id?: string;
+    parent_id?: string | null;
+    label: string;
+    order?: number;
+    max_marks?: number;
+    answer_type?: 'written' | 'mcq' | 'short' | 'diagram' | null;
+    mcq_options?: unknown | null;
+    mark_scheme?: Record<string, unknown>;
+    is_container?: boolean;
+    spec_ref?: string | null;
+    bounds?: Record<string, number> | null;
+    page?: number | null;
+  }>;
+  response_areas: Array<{
+    id?: string;
+    question_id: string;
+    page: number;
+    bounds: Record<string, number>;
+    kind: ExamResponseArea['kind'];
+    response_form?: string | null;
+    context_type?: string | null;
+    source?: 'manual' | 'ai';
+    confirmed?: boolean;
+    confidence?: number | null;
+  }>;
+  boundaries: Array<{
+    id?: string;
+    question_id?: string | null;
+    label?: string | null;
+    page_index: number;
+    y: number;
+    bounds?: Record<string, number> | null;
+    source?: 'manual' | 'ai';
+    confirmed?: boolean;
+  }>;
+}
+
 export interface PatchQuestionPayload {
   label?: string;
   order?: number;
   max_marks?: number;
-  answer_type?: written | mcq | short | diagram | null;
+  answer_type?: 'written' | 'mcq' | 'short' | 'diagram' | null;
   mcq_options?: unknown;
   mark_scheme?: MarkScheme;
   is_container?: boolean;
@@ -156,47 +202,67 @@ export interface Neo4jSyncResult {
   projection?: Record<string, unknown>;
 }
 
-export interface TemplateReplacePayload {
-  meta?: {
-    title?: string;
-    subject?: string;
-    page_count?: number;
-    status?: ExamTemplateStatus;
+export interface MarkingBatch {
+  id: string;
+  template_id: string;
+  class_id: string | null;
+  institute_id: string;
+  teacher_id: string;
+  title: string | null;
+  status: 'open' | 'closed' | 'archived' | string;
+  created_at: string;
+  updated_at?: string;
+  submission_count?: number;
+}
+
+export interface StudentSubmission {
+  id: string;
+  batch_id: string;
+  student_id: string | null;
+  student_name: string | null;
+  status: 'absent' | 'unmatched' | 'matched' | 'marking' | 'complete' | string;
+  storage_path?: string | null;
+  mark_entry_count?: number;
+}
+
+export interface BatchQueueResponse {
+  batch: MarkingBatch;
+  submissions: StudentSubmission[];
+  progress: {
+    total: number;
+    absent: number;
+    complete: number;
+    in_progress: number;
   };
-  questions: Array<{
-    id?: string;
-    parent_id?: string | null;
-    label: string;
-    order?: number;
-    max_marks?: number;
-    answer_type?: written | mcq | short | diagram | null;
-    mcq_options?: unknown | null;
-    mark_scheme?: MarkScheme;
-    is_container?: boolean;
-    spec_ref?: string | null;
-    bounds?: Record<string, number> | null;
-    page?: number | null;
-  }>;
-  response_areas: Array<{
-    id?: string;
-    question_id: string;
-    page: number;
-    bounds: Record<string, number>;
-    kind: ExamResponseAreaKind;
-    response_form?: string | null;
-    context_type?: string | null;
-    source?: manual | ai;
-    confirmed?: boolean;
-    confidence?: number | null;
-  }>;
-  boundaries: Array<{
-    id?: string;
-    question_id?: string | null;
-    label?: string | null;
-    page_index: number;
-    y: number;
-    bounds?: Record<string, number> | null;
-    source?: manual | ai;
-    confirmed?: boolean;
-  }>;
+}
+
+export interface ExamResultRow {
+  submission_id: string;
+  student_id: string | null;
+  student_name: string | null;
+  status: string | null;
+  marks: Record<string, number | null | undefined>;
+  total: number | null;
+}
+
+export interface BatchResultsResponse {
+  batch: MarkingBatch;
+  questions: Array<Pick<ExamQuestion, 'id' | 'label' | 'max_marks' | 'order'>>;
+  results: ExamResultRow[];
+}
+
+export interface CreateBatchPayload {
+  template_id: string;
+  class_id?: string;
+  title?: string;
+}
+
+export interface MarkUpsertPayload {
+  submission_id: string;
+  question_id: string;
+  awarded_marks: number;
+  mark_scheme_detail?: Record<string, unknown>;
+  annotation_shape_ids?: unknown;
+  comment?: string;
+  confirmed?: boolean;
 }

src/utils/exam-canvas/model.test.ts

@@ -43,6 +43,7 @@ describe('exam setup canvas serialization', () => {
     ], pages)
     expect(payload.questions.find((q) => !q.is_container)?.page).toBe(2)
     expect(payload.boundaries.every((b) => b.page_index === 1)).toBe(true)
+    expect(payload.boundaries.every((b) => b.bounds?.x === 260 && b.bounds?.w === 780)).toBe(true)
     expect(payload.response_areas[0].page).toBe(2)
   })
 
@@ -60,6 +61,7 @@ describe('exam setup canvas serialization', () => {
       boundaries: [{ id: 'b1', template_id: 'tpl-1', question_id: 'q1', label: 'Q1 start', page_index: 0, y: 100, bounds: { x: 0, y: 100, w: 700, h: 8 }, source: 'manual', confirmed: true }],
     })
     expect(shapes.map((s) => s.kind).sort()).toEqual(['boundary', 'furniture', 'part', 'response'])
+    expect(shapes.find((s) => s.kind === 'boundary')).toMatchObject({ id: 'b1', x: 0, y: 100, w: 780, h: 8 })
     expect(shapes.find((s) => s.kind === 'part')).toMatchObject({ id: 'p1', x: 1, y: 2, w: 3, h: 4 })
   })
 })

src/utils/exam-canvas/model.ts

@@ -65,10 +65,19 @@ export function newDomainId(): string {
   })
 }
 
-function bounds(shape: Pick<ExamCanvasShapeModel, 'x' | 'y' | 'w' | 'h'>): CanvasBounds {
+function bounds(shape: Pick<ExamCanvasShapeModel, 'x' | 'y' | 'w' | 'h'>): CanvasBounds & Record<string, number> {
   return { x: shape.x, y: shape.y, w: shape.w, h: shape.h }
 }
 
+function pageGeometry(pageNumber: number, pages?: CanvasPageGeometry[]): CanvasPageGeometry {
+  return pages?.find((page) => page.pageNumber === pageNumber) ?? { pageNumber, x: 0, y: pageTop(pageNumber, pages), w: PAGE_WIDTH, h: PAGE_HEIGHT }
+}
+
+function boundaryBounds(shape: Pick<ExamCanvasShapeModel, 'y' | 'h'>, pages?: CanvasPageGeometry[]): CanvasBounds & Record<string, number> {
+  const page = pageGeometry(pageForShape(shape, pages), pages)
+  return { x: page.x, y: shape.y, w: page.w, h: 8 }
+}
+
 function contains(outer: CanvasBounds, inner: CanvasBounds): boolean {
   const ox2 = outer.x + outer.w
   const oy2 = outer.y + outer.h
@@ -105,7 +114,7 @@ export function serializeCanvasShapes(template: ExamTemplateDetail, shapes: Exam
     questions.push({ id: questionId, label, order: qNum - 1, max_marks: 0, is_container: true, mark_scheme: {} })
     bands.push({ questionId, top, bottom })
     for (const b of [top, bottom]) {
-      boundaries.push({ id: isUuid(b.id) ? b.id : newDomainId(), question_id: questionId, label: b === top ? `${label} start` : `${label} end`, page_index: pageForShape(b, pages) - 1, y: b.y, bounds: bounds(b), source: 'manual', confirmed: true })
+      boundaries.push({ id: isUuid(b.id) ? b.id : newDomainId(), question_id: questionId, label: b === top ? `${label} start` : `${label} end`, page_index: pageForShape(b, pages) - 1, y: b.y, bounds: boundaryBounds(b, pages), source: 'manual', confirmed: true })
     }
   }
 
@@ -134,8 +143,10 @@ export function shapesFromTemplate(detail: ExamTemplateDetail, pages?: CanvasPag
   const shapes: ExamCanvasShapeModel[] = []
   const questions = new Map(detail.questions.map((q) => [q.id, q]))
   for (const b of detail.boundaries ?? []) {
-    const bb = b.bounds ?? { x: 48, y: b.y, w: PAGE_WIDTH - 96, h: 8 }
-    shapes.push({ id: b.id, kind: 'boundary', x: Number(bb.x ?? 48), y: Number(bb.y ?? b.y), w: Number(bb.w ?? PAGE_WIDTH - 96), h: Number(bb.h ?? 8), label: b.label ?? undefined, questionId: b.question_id })
+    const page = pageGeometry((b.page_index ?? 0) + 1, pages)
+    // Boundary rows are y-lines. The old bounds rect is vestigial: keep y/domain ids,
+    // but render and save a full rendered-page-width horizontal rule.
+    shapes.push({ id: b.id, kind: 'boundary', x: page.x, y: Number(b.y), w: page.w, h: 8, label: b.label ?? undefined, questionId: b.question_id })
   }
   for (const q of detail.questions ?? []) {
     if (q.is_container || !q.bounds) continue