diff --git a/next-env.d.ts b/next-env.d.ts
index 9edff1c..c4b7818 100644
--- a/next-env.d.ts
+++ b/next-env.d.ts
@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.
diff --git a/opencode.json b/opencode.json
new file mode 100644
index 0000000..6b8b42d
--- /dev/null
+++ b/opencode.json
@@ -0,0 +1,10 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "mcp": {
+    "dual-graph": {
+      "type": "remote",
+      "url": "http://127.0.0.1:8080/mcp",
+      "enabled": true
+    }
+  }
+}
diff --git a/src/app/(modules)/ticket/[ticketId]/components/TicketOverviewCard.tsx b/src/app/(modules)/ticket/[ticketId]/components/TicketOverviewCard.tsx
index af2693e..82389e3 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/TicketOverviewCard.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/TicketOverviewCard.tsx
@@ -1,12 +1,8 @@
 'use client';
 
-import type { TicketActor, TicketDetail } from '@/types';
+import type { TicketDetail } from '@/types';
 import { formatDate } from '@/utils/date';
 
-import {
-  TicketStatusBadge,
-} from '../../components/TicketStatusBadge';
-
 function formatCreatedDate(value: string | null | undefined) {
   if (!value) return '-';
   return new Intl.DateTimeFormat('en-IN', { dateStyle: 'medium' }).format(
@@ -14,20 +10,6 @@ function formatCreatedDate(value: string | null | undefined) {
   );
 }
 
-function getInitials(person: TicketActor | null | undefined) {
-  const source = person?.name || person?.email || '?';
-  return source
-    .split(/[\s@._-]+/)
-    .filter(Boolean)
-    .slice(0, 2)
-    .map((part) => part.charAt(0).toUpperCase())
-    .join('');
-}
-
-function getPersonLabel(person: TicketActor | null | undefined) {
-  return person?.name || person?.email || '-';
-}
-
 function MetaLabel({ children }: { children: React.ReactNode }) {
   return (
     <p className="text-xs font-medium tracking-wide text-muted-foreground">
@@ -40,29 +22,6 @@ function MetaValue({ children }: { children: React.ReactNode }) {
   return <p className="text-sm font-semibold text-foreground">{children}</p>;
 }
 
-function PersonMetaValue({
-  person,
-  accentClassName = 'bg-primary/15 text-primary',
-}: {
-  person: TicketActor | null | undefined;
-  accentClassName?: string;
-}) {
-  if (!person) {
-    return <MetaValue>-</MetaValue>;
-  }
-
-  return (
-    <div className="flex min-w-0 items-center gap-2">
-      <span
-        className={`flex size-5 shrink-0 items-center justify-center rounded-full text-[10px] font-bold ${accentClassName}`}
-      >
-        {getInitials(person)}
-      </span>
-      <p className="truncate text-sm font-medium">{getPersonLabel(person)}</p>
-    </div>
-  );
-}
-
 function OverviewField({
   label,
   children,
@@ -80,6 +39,22 @@ function OverviewField({
 
 export function TicketOverviewCard({ ticket }: { ticket: TicketDetail }) {
   const detectionCount = ticket.ai_result?.detection_count;
+  const assignments = ticket.assignments ?? [];
+  const primaryAssignment = assignments[0] ?? null;
+  const assignedNames = Array.from(
+    new Set(
+      assignments
+        .map((assignment) => assignment.assigned_to_name)
+        .filter(Boolean),
+    ),
+  );
+  const reviewerNames = Array.from(
+    new Set(
+      assignments
+        .map((assignment) => assignment.reviewed_by_name)
+        .filter(Boolean),
+    ),
+  );
 
   return (
     <section className="overflow-hidden rounded-xl border bg-card">
@@ -101,7 +76,9 @@ export function TicketOverviewCard({ ticket }: { ticket: TicketDetail }) {
         </OverviewField>
 
         <OverviewField label="Uploaded By">
-          <PersonMetaValue person={ticket.uploader} />
+          <MetaValue>
+            {ticket.uploader?.name || ticket.uploader?.email || '-'}
+          </MetaValue>
         </OverviewField>
 
         <OverviewField label="Created Date">
@@ -109,21 +86,27 @@ export function TicketOverviewCard({ ticket }: { ticket: TicketDetail }) {
         </OverviewField>
 
         <OverviewField label="Assigned To">
-          <PersonMetaValue
-            person={ticket.worker}
-            accentClassName="bg-secondary text-secondary-foreground"
-          />
+          <MetaValue>
+            {assignedNames.length ? assignedNames.join(', ') : '-'}
+          </MetaValue>
         </OverviewField>
 
         <OverviewField label="Reviewer">
-          <PersonMetaValue
-            person={ticket.reviewer}
-            accentClassName="bg-primary/20 text-primary"
-          />
+          <MetaValue>
+            {reviewerNames.length ? reviewerNames.join(', ') : '-'}
+          </MetaValue>
         </OverviewField>
 
         <OverviewField label="Assigned At">
-          <MetaValue>{formatDate(ticket.worker?.assigned_at)}</MetaValue>
+          <MetaValue>{formatDate(primaryAssignment?.assigned_at)}</MetaValue>
+        </OverviewField>
+
+        <OverviewField label="Coverage">
+          <MetaValue>
+            {ticket.coverage
+              ? `${ticket.coverage.assigned_count}/${ticket.coverage.total_count} Classes`
+              : '-'}
+          </MetaValue>
         </OverviewField>
 
       </div>
diff --git a/src/app/(modules)/ticket/[ticketId]/components/TicketRepairReportCard.tsx b/src/app/(modules)/ticket/[ticketId]/components/TicketRepairReportCard.tsx
index 5db9f75..7eaaa7b 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/TicketRepairReportCard.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/TicketRepairReportCard.tsx
@@ -9,12 +9,23 @@ import { RepairReportPanel } from './repair-report/RepairReportPanel';
 import { RepairVideoComparison } from './repair-report/RepairVideoComparison';
 
 export function TicketRepairReportCard({ ticket }: { ticket: TicketDetail }) {
-  const repair = ticket.repair;
+  const repairedAssignments = (ticket.assignments ?? []).filter(
+    (assignment) =>
+      assignment.repair_submitted_at ||
+      assignment.repair_notes ||
+      assignment.repair_proof_video_url ||
+      assignment.repair_proof_image_urls.length,
+  );
 
-  if (!repair) {
+  if (!repairedAssignments.length) {
     return null;
   }
 
+  const imageUrls = repairedAssignments.flatMap(
+    (assignment) => assignment.repair_proof_image_urls,
+  );
+  const submittedAt = repairedAssignments[0]?.repair_submitted_at ?? null;
+
   return (
     <section className="space-y-5">
       <RepairReportPanel ticket={ticket} />
@@ -28,8 +39,8 @@ export function TicketRepairReportCard({ ticket }: { ticket: TicketDetail }) {
         </h3>
 
         <RepairProofImagesGrid
-          imageUrls={repair?.proof_image_urls ?? []}
-          submittedAt={repair?.submitted_at ?? null}
+          imageUrls={imageUrls}
+          submittedAt={submittedAt}
         />
       </div>
     </section>
diff --git a/src/app/(modules)/ticket/[ticketId]/components/TicketStatusActions.tsx b/src/app/(modules)/ticket/[ticketId]/components/TicketStatusActions.tsx
index e0a08a3..0434728 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/TicketStatusActions.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/TicketStatusActions.tsx
@@ -9,8 +9,6 @@ import { AssignTicketAction } from './actions/AssignTicketAction';
 import { ClosedTicketAction } from './actions/ClosedTicketAction';
 import { NoTicketAction } from './actions/NoTicketAction';
 import { ProcessingTicketAction } from './actions/ProcessingTicketAction';
-import { ReviewRepairAction } from './actions/ReviewRepairAction';
-import { SubmitRepairAction } from './actions/SubmitRepairAction';
 
 interface TicketStatusActionsProps {
   ticket: TicketDetail;
@@ -30,10 +28,18 @@ export function TicketStatusActions({
     );
   }
 
-  if (ticket.status === 'unassigned') {
+  if (
+    ticket.status === 'unassigned' ||
+    ticket.status === 'assigned' ||
+    ticket.status === 'under_review'
+  ) {
     return (
       <PermissionGuard
-        permissions={PERMISSIONS.TICKET.ASSIGN}
+        permissions={[
+          PERMISSIONS.TICKET.ASSIGN,
+          PERMISSIONS.TICKET.WORK,
+          PERMISSIONS.TICKET.REVIEW,
+        ]}
         fallback={<NoTicketAction status={ticket.status} />}
       >
         <AssignTicketAction ticket={ticket} />
@@ -41,28 +47,6 @@ export function TicketStatusActions({
     );
   }
 
-  if (ticket.status === 'assigned') {
-    return (
-      <PermissionGuard
-        permissions={PERMISSIONS.TICKET.WORK}
-        fallback={<NoTicketAction status={ticket.status} />}
-      >
-        <SubmitRepairAction ticket={ticket} />
-      </PermissionGuard>
-    );
-  }
-
-  if (ticket.status === 'under_review') {
-    return (
-      <PermissionGuard
-        permissions={PERMISSIONS.TICKET.REVIEW}
-        fallback={<NoTicketAction status={ticket.status} />}
-      >
-        <ReviewRepairAction ticket={ticket} />
-      </PermissionGuard>
-    );
-  }
-
   if (ticket.status === 'closed') {
     return <ClosedTicketAction ticket={ticket} />;
   }
diff --git a/src/app/(modules)/ticket/[ticketId]/components/actions/AssignTicketAction.tsx b/src/app/(modules)/ticket/[ticketId]/components/actions/AssignTicketAction.tsx
index d721abd..df092b0 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/actions/AssignTicketAction.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/actions/AssignTicketAction.tsx
@@ -1,57 +1,44 @@
 'use client';
 
 import { useState } from 'react';
-import { Send, UserPlus } from 'lucide-react';
+import { UserPlus } from 'lucide-react';
 
 import { Button } from '@/components/ui/button';
-import { Label } from '@/components/ui/label';
-import { Textarea } from '@/components/ui/textarea';
-import { AssignableWorkerSelect } from '@/components/lookups/AssignableWorkerSelect';
 import type { TicketDetail } from '@/types';
 
-import { useAssignTicketMutation } from '../../../hooks/useTicketQueries';
+import { TicketAssignmentSheet } from './TicketAssignmentSheet';
 import { TicketActionCard } from './TicketActionCard';
 
 export function AssignTicketAction({ ticket }: { ticket: TicketDetail }) {
-  const [selectedUserId, setSelectedUserId] = useState('');
-  const [assignNote, setAssignNote] = useState('');
-
-  const assignMutation = useAssignTicketMutation(ticket.id);
+  const [open, setOpen] = useState(false);
+  const coverage = ticket.coverage;
 
   return (
-    <TicketActionCard icon={UserPlus} title="Assign Ticket">
+    <TicketActionCard icon={UserPlus} title="Assignments">
       <div className="space-y-4">
-        <div className="space-y-2">
-          <Label>Contractor</Label>
-          <AssignableWorkerSelect
-            value={selectedUserId}
-            onValueChange={setSelectedUserId}
-            disabled={assignMutation.isPending}
-          />
-        </div>
-        <div className="space-y-2">
-          <Label>Note</Label>
-          <Textarea
-            value={assignNote}
-            onChange={(event) => setAssignNote(event.target.value)}
-            placeholder="Please inspect and repair"
-          />
-        </div>
-        <Button
-          disabled={!selectedUserId || assignMutation.isPending}
-          onClick={() => {
-            if (!selectedUserId) return;
-            assignMutation.mutate({
-              assigned_to_user_id: Number(selectedUserId),
-              note: assignNote || undefined,
-            });
-          }}
-          className="w-full"
-        >
-          <Send />
-          Assign
+        {coverage ? (
+          <div className="rounded-lg border bg-muted/15 px-3 py-2">
+            <p className="text-sm font-medium">
+              {coverage.assigned_count}/{coverage.total_count} classes assigned
+            </p>
+            {coverage.unassigned_defect_classes.length ? (
+              <p className="mt-1 text-xs text-muted-foreground">
+                Still needs a contractor:{' '}
+                {coverage.unassigned_defect_classes.join(', ')}
+              </p>
+            ) : null}
+          </div>
+        ) : null}
+        <Button className="w-full" onClick={() => setOpen(true)}>
+          <UserPlus />
+          Manage Assignments
         </Button>
       </div>
+      <TicketAssignmentSheet
+        ticket={ticket}
+        open={open}
+        onOpenChange={setOpen}
+      />
     </TicketActionCard>
   );
 }
diff --git a/src/app/(modules)/ticket/[ticketId]/components/actions/ClosedTicketAction.tsx b/src/app/(modules)/ticket/[ticketId]/components/actions/ClosedTicketAction.tsx
index d0777c2..2200a5a 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/actions/ClosedTicketAction.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/actions/ClosedTicketAction.tsx
@@ -13,7 +13,7 @@ import {
   CardTitle,
 } from '@/components/ui/card';
 import { cn } from '@/lib/utils';
-import type { TicketDetail } from '@/types';
+import type { TicketAssignmentSummary, TicketDetail } from '@/types';
 
 function getInitials(name?: string | null, email?: string | null) {
   const source = name || email || '?';
@@ -25,8 +25,8 @@ function getInitials(name?: string | null, email?: string | null) {
     .join('');
 }
 
-function getPersonLabel(person: TicketDetail['reviewer']) {
-  return person?.name || person?.email || 'Unknown';
+function getPersonLabel(assignment: TicketAssignmentSummary | null) {
+  return assignment?.reviewed_by_name || 'Unknown';
 }
 
 function formatReviewDate(value: string | null | undefined) {
@@ -42,7 +42,8 @@ function getClosedAt(ticket: TicketDetail) {
   );
   return (
     closedEntry?.created_at ??
-    ticket.reviewer?.reviewed_at ??
+    (ticket.assignments ?? []).find((assignment) => assignment.reviewed_at)
+      ?.reviewed_at ??
     ticket.timestamps.updated_at
   );
 }
@@ -94,8 +95,13 @@ function FinalCommentsPanel({
 }
 
 export function ClosedTicketAction({ ticket }: { ticket: TicketDetail }) {
-  const reviewer = ticket.reviewer;
+  const reviewer = (ticket.assignments ?? []).find(
+    (assignment) => assignment.reviewed_by_name || assignment.reviewed_at,
+  ) ?? null;
   const reviewedAt = reviewer?.reviewed_at ?? getClosedAt(ticket);
+  const reviewComments = (ticket.assignments ?? [])
+    .map((assignment) => assignment.review_comment)
+    .filter(Boolean);
 
   return (
     <Card className="relative overflow-hidden border bg-card/80">
@@ -112,16 +118,11 @@ export function ClosedTicketAction({ ticket }: { ticket: TicketDetail }) {
               <div className="flex min-w-0 items-center gap-3">
                 <Avatar className="size-10 border border-primary/30">
                   <AvatarFallback className="bg-primary/15 text-sm text-primary">
-                    {getInitials(reviewer?.name, reviewer?.email)}
+                    {getInitials(reviewer?.reviewed_by_name, null)}
                   </AvatarFallback>
                 </Avatar>
                 <div className="min-w-0">
                   <p className="truncate">{getPersonLabel(reviewer)}</p>
-                  {reviewer?.email ? (
-                    <p className="mt-0.5 truncate text-xs font-medium text-muted-foreground">
-                      {reviewer.email}
-                    </p>
-                  ) : null}
                 </div>
               </div>
             }
@@ -137,7 +138,7 @@ export function ClosedTicketAction({ ticket }: { ticket: TicketDetail }) {
           <p className="text-xs font-medium tracking-wide text-muted-foreground">
             Review Comment
           </p>
-          <FinalCommentsPanel comment={reviewer?.review_comment} />
+          <FinalCommentsPanel comment={reviewComments.join('\n\n')} />
         </div>
 
         <Button
diff --git a/src/app/(modules)/ticket/[ticketId]/components/actions/RepairEvidenceForm.tsx b/src/app/(modules)/ticket/[ticketId]/components/actions/RepairEvidenceForm.tsx
index dfdc95c..7034594 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/actions/RepairEvidenceForm.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/actions/RepairEvidenceForm.tsx
@@ -8,9 +8,9 @@ import { Label } from '@/components/ui/label';
 import { Textarea } from '@/components/ui/textarea';
 import { cn } from '@/lib/utils';
 
-import { useSubmitRepairUploadMutation } from '../../../hooks/useTicketQueries';
+import { useSubmitAssignmentRepairUploadMutation } from '../../../hooks/useTicketQueries';
 
-const MAX_IMAGES = 5;
+const MAX_IMAGES = 20;
 
 function RequiredMark() {
   return <span className="text-destructive">*</span>;
@@ -131,16 +131,23 @@ function ImageSlot({
 
 interface RepairEvidenceFormProps {
   ticketId: string;
+  assignmentId: number;
 }
 
-export function RepairEvidenceForm({ ticketId }: RepairEvidenceFormProps) {
+export function RepairEvidenceForm({
+  ticketId,
+  assignmentId,
+}: RepairEvidenceFormProps) {
   const imageInputRef = useRef<HTMLInputElement | null>(null);
   const [notes, setNotes] = useState('');
   const [videoFile, setVideoFile] = useState<File | null>(null);
   const [imageFiles, setImageFiles] = useState<File[]>([]);
   const [imagePreviews, setImagePreviews] = useState<string[]>([]);
   const [error, setError] = useState<string | null>(null);
-  const submitRepairUploadMutation = useSubmitRepairUploadMutation(ticketId);
+  const submitRepairUploadMutation = useSubmitAssignmentRepairUploadMutation(
+    ticketId,
+    assignmentId,
+  );
   const isSubmitting = submitRepairUploadMutation.isPending;
   const canSubmit = Boolean(notes.trim() && videoFile);
 
@@ -261,7 +268,7 @@ export function RepairEvidenceForm({ ticketId }: RepairEvidenceFormProps) {
               event.target.value = '';
             }}
           />
-          <div className="grid grid-cols-5 gap-2">
+          <div className="grid grid-cols-5 gap-2 md:grid-cols-10">
             {imageSlots.map((slot, index) => (
               <ImageSlot
                 key={index}
diff --git a/src/app/(modules)/ticket/[ticketId]/components/actions/ReviewRepairAction.tsx b/src/app/(modules)/ticket/[ticketId]/components/actions/ReviewRepairAction.tsx
index c2fdbe5..db19c82 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/actions/ReviewRepairAction.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/actions/ReviewRepairAction.tsx
@@ -1,63 +1,7 @@
-'use client';
-
-import { useEffect, useState } from 'react';
-import { Check, ClipboardCheck, X } from 'lucide-react';
-
-import { Button } from '@/components/ui/button';
-import { Label } from '@/components/ui/label';
-import { Textarea } from '@/components/ui/textarea';
 import type { TicketDetail } from '@/types';
 
-import { useReviewRepairMutation } from '../../../hooks/useTicketQueries';
-import { TicketActionCard } from './TicketActionCard';
+import { AssignTicketAction } from './AssignTicketAction';
 
 export function ReviewRepairAction({ ticket }: { ticket: TicketDetail }) {
-  const [reviewComment, setReviewComment] = useState('');
-  const reviewRepairMutation = useReviewRepairMutation(ticket.id);
-
-  useEffect(() => {
-    setReviewComment(ticket.reviewer?.review_comment ?? '');
-  }, [ticket]);
-
-  return (
-    <TicketActionCard icon={ClipboardCheck} title="Review Repair">
-      <div className="space-y-4">
-        <div className="space-y-2">
-          <Label>Comment</Label>
-          <Textarea
-            value={reviewComment}
-            onChange={(event) => setReviewComment(event.target.value)}
-            placeholder="Repair verified"
-          />
-        </div>
-        <div className="grid grid-cols-2 gap-2">
-          <Button
-            disabled={!reviewComment || reviewRepairMutation.isPending}
-            onClick={() =>
-              reviewRepairMutation.mutate({
-                action: 'approve',
-                comment: reviewComment,
-              })
-            }
-          >
-            <Check />
-            Approve
-          </Button>
-          <Button
-            variant="destructive"
-            disabled={!reviewComment || reviewRepairMutation.isPending}
-            onClick={() =>
-              reviewRepairMutation.mutate({
-                action: 'reject',
-                comment: reviewComment,
-              })
-            }
-          >
-            <X />
-            Reject
-          </Button>
-        </div>
-      </div>
-    </TicketActionCard>
-  );
+  return <AssignTicketAction ticket={ticket} />;
 }
diff --git a/src/app/(modules)/ticket/[ticketId]/components/actions/SubmitRepairAction.tsx b/src/app/(modules)/ticket/[ticketId]/components/actions/SubmitRepairAction.tsx
index 2a973dd..71794cb 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/actions/SubmitRepairAction.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/actions/SubmitRepairAction.tsx
@@ -1,16 +1,7 @@
-'use client';
-
-import { Wrench } from 'lucide-react';
-
 import type { TicketDetail } from '@/types';
 
-import { RepairEvidenceForm } from './RepairEvidenceForm';
-import { TicketActionCard } from './TicketActionCard';
+import { AssignTicketAction } from './AssignTicketAction';
 
 export function SubmitRepairAction({ ticket }: { ticket: TicketDetail }) {
-  return (
-    <TicketActionCard icon={Wrench} title="Submit Repair Evidence">
-      <RepairEvidenceForm ticketId={ticket.id} />
-    </TicketActionCard>
-  );
+  return <AssignTicketAction ticket={ticket} />;
 }
diff --git a/src/app/(modules)/ticket/[ticketId]/components/actions/TicketAssignmentSheet.tsx b/src/app/(modules)/ticket/[ticketId]/components/actions/TicketAssignmentSheet.tsx
new file mode 100644
index 0000000..1e3b542
--- /dev/null
+++ b/src/app/(modules)/ticket/[ticketId]/components/actions/TicketAssignmentSheet.tsx
@@ -0,0 +1,465 @@
+'use client';
+
+import { useEffect, useMemo, useRef, useState } from 'react';
+import { Check, ClipboardCheck, Loader2, Send, Wrench, X } from 'lucide-react';
+
+import { AssignableWorkerSelect } from '@/components/lookups/AssignableWorkerSelect';
+import { Badge } from '@/components/ui/badge';
+import { Button } from '@/components/ui/button';
+import { Label } from '@/components/ui/label';
+import {
+  Sheet,
+  SheetClose,
+  SheetContent,
+  SheetDescription,
+  SheetFooter,
+  SheetHeader,
+  SheetTitle,
+} from '@/components/ui/sheet';
+import { Textarea } from '@/components/ui/textarea';
+import { PERMISSIONS } from '@/constants/permissions';
+import { PermissionGuard } from '@/guards';
+import type {
+  AssignmentStatus,
+  TicketAssignmentSummary,
+  TicketDefectClass,
+  TicketDetail,
+} from '@/types';
+
+import {
+  useReplaceTicketAssignmentsMutation,
+  useReviewAssignmentRepairMutation,
+  useTicketAssignmentsQuery,
+  useTicketDefectClassesQuery,
+} from '../../../hooks/useTicketQueries';
+import { RepairEvidenceForm } from './RepairEvidenceForm';
+
+interface TicketAssignmentSheetProps {
+  ticket: TicketDetail;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}
+
+interface AssignmentRowState {
+  defectClass: string;
+  displayName: string;
+  selectedUserId: string;
+  note: string;
+  assignment: TicketAssignmentSummary | null;
+}
+
+const statusStyles: Record<AssignmentStatus, string> = {
+  assigned: 'border-blue-200 bg-blue-50 text-blue-700',
+  under_review: 'border-amber-200 bg-amber-50 text-amber-700',
+  approved: 'border-emerald-200 bg-emerald-50 text-emerald-700',
+  rejected: 'border-red-200 bg-red-50 text-red-700',
+};
+
+const EMPTY_ASSIGNMENTS: TicketAssignmentSummary[] = [];
+
+function titleCase(value: string) {
+  return value
+    .split('_')
+    .map((part) => part.charAt(0).toUpperCase() + part.slice(1))
+    .join(' ');
+}
+
+function formatStatus(status: AssignmentStatus | null | undefined) {
+  return status ? titleCase(status) : 'Unassigned';
+}
+
+function getFallbackClasses(ticket: TicketDetail): TicketDefectClass[] {
+  const assignments = ticket.assignments ?? [];
+  const names =
+    ticket.coverage?.total_defect_classes ??
+    ticket.ai_result?.available_defect_classes ??
+    assignments.map((assignment) => assignment.defect_class);
+
+  return names.map((className) => {
+    const existing = assignments.find(
+      (assignment) => assignment.defect_class === className,
+    );
+
+    return {
+      class_name: className,
+      display_name: existing?.defect_display_name ?? titleCase(className),
+    };
+  });
+}
+
+function buildRows(
+  classes: TicketDefectClass[],
+  assignments: TicketAssignmentSummary[],
+): AssignmentRowState[] {
+  const classMap = new Map<string, TicketDefectClass>();
+  classes.forEach((item) => classMap.set(item.class_name, item));
+  assignments.forEach((assignment) => {
+    if (!classMap.has(assignment.defect_class)) {
+      classMap.set(assignment.defect_class, {
+        class_name: assignment.defect_class,
+        display_name: assignment.defect_display_name,
+      });
+    }
+  });
+
+  return Array.from(classMap.values()).map((item) => {
+    const assignment = assignments.find(
+      (current) => current.defect_class === item.class_name,
+    );
+
+    return {
+      defectClass: item.class_name,
+      displayName: item.display_name,
+      selectedUserId: assignment?.assigned_to_user_id
+        ? String(assignment.assigned_to_user_id)
+        : '',
+      note: assignment?.note ?? '',
+      assignment: assignment ?? null,
+    };
+  });
+}
+
+function AssignmentStatusBadge({
+  status,
+}: {
+  status: AssignmentStatus | null | undefined;
+}) {
+  if (!status) return <Badge variant="outline">Unassigned</Badge>;
+
+  return (
+    <Badge variant="outline" className={statusStyles[status]}>
+      {formatStatus(status)}
+    </Badge>
+  );
+}
+
+function AssignmentReviewControls({
+  ticketId,
+  assignment,
+}: {
+  ticketId: string;
+  assignment: TicketAssignmentSummary;
+}) {
+  const [comment, setComment] = useState(assignment.review_comment ?? '');
+  const reviewMutation = useReviewAssignmentRepairMutation(
+    ticketId,
+    assignment.id,
+  );
+
+  useEffect(() => {
+    setComment(assignment.review_comment ?? '');
+  }, [assignment.review_comment]);
+
+  return (
+    <div className="space-y-2 rounded-md border bg-muted/15 p-3">
+      <Label className="text-xs">Review Comment</Label>
+      <Textarea
+        value={comment}
+        onChange={(event) => setComment(event.target.value)}
+        placeholder="Repair verified"
+        className="min-h-20 resize-none"
+        disabled={reviewMutation.isPending}
+      />
+      <div className="grid grid-cols-2 gap-2">
+        <Button
+          type="button"
+          size="sm"
+          disabled={!comment.trim() || reviewMutation.isPending}
+          onClick={() =>
+            reviewMutation.mutate({
+              action: 'approve',
+              comment: comment.trim(),
+            })
+          }
+        >
+          <Check className="size-4" />
+          Approve
+        </Button>
+        <Button
+          type="button"
+          size="sm"
+          variant="destructive"
+          disabled={!comment.trim() || reviewMutation.isPending}
+          onClick={() =>
+            reviewMutation.mutate({
+              action: 'reject',
+              comment: comment.trim(),
+            })
+          }
+        >
+          <X className="size-4" />
+          Reject
+        </Button>
+      </div>
+    </div>
+  );
+}
+
+function AssignmentProofSummary({
+  assignment,
+}: {
+  assignment: TicketAssignmentSummary;
+}) {
+  if (!assignment.repair_submitted_at && !assignment.review_comment) {
+    return null;
+  }
+
+  return (
+    <div className="grid gap-2 text-xs text-muted-foreground md:grid-cols-2">
+      {assignment.repair_submitted_at ? (
+        <div className="rounded-md border bg-muted/10 px-3 py-2">
+          <p className="font-medium text-foreground">Repair submitted</p>
+          <p>{assignment.repair_submitted_at}</p>
+          <p>
+            {assignment.repair_proof_video_url ? '1 video' : 'No video'} /{' '}
+            {assignment.repair_proof_image_urls.length} images
+          </p>
+        </div>
+      ) : null}
+      {assignment.review_comment ? (
+        <div className="rounded-md border bg-muted/10 px-3 py-2">
+          <p className="font-medium text-foreground">Review comment</p>
+          <p className="line-clamp-2">{assignment.review_comment}</p>
+        </div>
+      ) : null}
+    </div>
+  );
+}
+
+export function TicketAssignmentSheet({
+  ticket,
+  open,
+  onOpenChange,
+}: TicketAssignmentSheetProps) {
+  const sheetContentRef = useRef<HTMLDivElement | null>(null);
+  const fallbackClasses = useMemo(() => getFallbackClasses(ticket), [ticket]);
+  const defectClassesQuery = useTicketDefectClassesQuery(ticket.id, open);
+  const assignmentsQuery = useTicketAssignmentsQuery(ticket.id, open);
+  const replaceAssignmentsMutation = useReplaceTicketAssignmentsMutation(
+    ticket.id,
+  );
+  const [rows, setRows] = useState<AssignmentRowState[]>([]);
+
+  const defectClasses = defectClassesQuery.data?.defect_classes.length
+    ? defectClassesQuery.data.defect_classes
+    : fallbackClasses;
+  const assignments =
+    assignmentsQuery.data?.items ?? ticket.assignments ?? EMPTY_ASSIGNMENTS;
+  const coverage = ticket.coverage;
+  const isLoading = defectClassesQuery.isLoading || assignmentsQuery.isLoading;
+  const assignedRows = rows.filter((row) => row.selectedUserId);
+  const canSave =
+    assignedRows.length > 0 && !replaceAssignmentsMutation.isPending;
+
+  useEffect(() => {
+    if (!open) return;
+    setRows(buildRows(defectClasses, assignments));
+  }, [assignments, defectClasses, open]);
+
+  const updateRow = (
+    defectClass: string,
+    patch: Partial<Pick<AssignmentRowState, 'selectedUserId' | 'note'>>,
+  ) => {
+    setRows((current) =>
+      current.map((row) =>
+        row.defectClass === defectClass ? { ...row, ...patch } : row,
+      ),
+    );
+  };
+
+  const handleSave = async () => {
+    await replaceAssignmentsMutation.mutateAsync({
+      assignments: assignedRows.map((row) => ({
+        assigned_to_user_id: Number(row.selectedUserId),
+        defect_class: row.defectClass,
+        note: row.note.trim() || undefined,
+      })),
+      note: 'Updated ticket assignments',
+    });
+    onOpenChange(false);
+  };
+
+  return (
+    <Sheet open={open} onOpenChange={onOpenChange}>
+      <SheetContent
+        ref={sheetContentRef}
+        side="right"
+        className="flex h-full flex-col gap-0 p-0 sm:max-w-3xl lg:max-w-4xl"
+      >
+        <SheetHeader className="shrink-0 border-b px-6 py-4 pr-12">
+          <div className="flex flex-wrap items-center gap-2">
+            <SheetTitle className="text-lg leading-none font-semibold tracking-tight">
+              Manage Assignments
+            </SheetTitle>
+            {coverage ? (
+              <Badge
+                variant={coverage.is_fully_assigned ? 'default' : 'outline'}
+              >
+                {coverage.assigned_count}/{coverage.total_count} assigned
+              </Badge>
+            ) : null}
+          </div>
+          <SheetDescription className="text-sm">
+            Assign workers, submit repair evidence, and review each defect
+            class.
+          </SheetDescription>
+          {coverage?.unassigned_defect_classes.length ? (
+            <p className="text-xs text-muted-foreground">
+              Still needs a worker:{' '}
+              {coverage.unassigned_defect_classes.join(', ')}
+            </p>
+          ) : null}
+        </SheetHeader>
+
+        <div className="min-h-0 flex-1 overflow-y-auto px-6 py-4">
+          {isLoading && rows.length === 0 ? (
+            <div className="rounded-md border p-6 text-sm text-muted-foreground">
+              Loading assignments...
+            </div>
+          ) : (
+            <div className="space-y-3">
+              {rows.map((row) => {
+                const assignment = row.assignment;
+                const canSubmitRepair =
+                  assignment?.status === 'assigned' ||
+                  assignment?.status === 'rejected';
+                const canReview = assignment?.status === 'under_review';
+
+                return (
+                  <div
+                    key={row.defectClass}
+                    className="space-y-4 rounded-lg border bg-card p-4"
+                  >
+                    <div className="grid gap-3 lg:grid-cols-[minmax(140px,1fr)_minmax(220px,1.2fr)_120px]">
+                      <div className="space-y-1">
+                        <Label className="text-xs text-muted-foreground">
+                          Defect Class
+                        </Label>
+                        <p className="text-sm font-semibold">
+                          {row.displayName}
+                        </p>
+                      </div>
+
+                      <div className="space-y-1">
+                        <Label className="text-xs text-muted-foreground">
+                          Worker
+                        </Label>
+                        <PermissionGuard
+                          permissions={PERMISSIONS.TICKET.ASSIGN}
+                          fallback={
+                            <p className="rounded-md border px-3 py-2 text-sm">
+                              {assignment?.assigned_to_name ?? 'Unassigned'}
+                            </p>
+                          }
+                        >
+                          <AssignableWorkerSelect
+                            value={row.selectedUserId}
+                            onValueChange={(selectedUserId) =>
+                              updateRow(row.defectClass, { selectedUserId })
+                            }
+                            disabled={replaceAssignmentsMutation.isPending}
+                            portalContainer={sheetContentRef}
+                          />
+                        </PermissionGuard>
+                      </div>
+
+                      <div className="space-y-1">
+                        <Label className="text-xs text-muted-foreground">
+                          Status
+                        </Label>
+                        <div className="flex h-9 items-center">
+                          <AssignmentStatusBadge status={assignment?.status} />
+                        </div>
+                      </div>
+                    </div>
+
+                    <PermissionGuard permissions={PERMISSIONS.TICKET.ASSIGN}>
+                      <div className="space-y-1">
+                        <Label className="text-xs text-muted-foreground">
+                          Note
+                        </Label>
+                        <Textarea
+                          value={row.note}
+                          onChange={(event) =>
+                            updateRow(row.defectClass, {
+                              note: event.target.value,
+                            })
+                          }
+                          placeholder="Optional assignment note"
+                          className="min-h-20 resize-none"
+                          disabled={replaceAssignmentsMutation.isPending}
+                        />
+                      </div>
+                    </PermissionGuard>
+
+                    {assignment ? (
+                      <AssignmentProofSummary assignment={assignment} />
+                    ) : null}
+
+                    {assignment && canSubmitRepair ? (
+                      <PermissionGuard permissions={PERMISSIONS.TICKET.WORK}>
+                        <div className="space-y-3 rounded-md border bg-muted/10 p-3">
+                          <p className="flex items-center gap-2 text-sm font-medium">
+                            <Wrench className="size-4 text-primary" />
+                            Submit repair for {row.displayName}
+                          </p>
+                          <RepairEvidenceForm
+                            ticketId={ticket.id}
+                            assignmentId={assignment.id}
+                          />
+                        </div>
+                      </PermissionGuard>
+                    ) : null}
+
+                    {assignment && canReview ? (
+                      <PermissionGuard permissions={PERMISSIONS.TICKET.REVIEW}>
+                        <div className="space-y-3">
+                          <p className="flex items-center gap-2 text-sm font-medium">
+                            <ClipboardCheck className="size-4 text-primary" />
+                            Review repair for {row.displayName}
+                          </p>
+                          <AssignmentReviewControls
+                            ticketId={ticket.id}
+                            assignment={assignment}
+                          />
+                        </div>
+                      </PermissionGuard>
+                    ) : null}
+                  </div>
+                );
+              })}
+
+              {!rows.length ? (
+                <div className="rounded-md border border-dashed p-6 text-center text-sm text-muted-foreground">
+                  No defect classes are available for this ticket.
+                </div>
+              ) : null}
+            </div>
+          )}
+        </div>
+
+        <SheetFooter className="shrink-0 border-t px-6 py-4 sm:flex-row sm:justify-end">
+          <PermissionGuard permissions={PERMISSIONS.TICKET.ASSIGN}>
+            <Button type="button" disabled={!canSave} onClick={handleSave}>
+              {replaceAssignmentsMutation.isPending ? (
+                <Loader2 className="size-4 animate-spin" />
+              ) : (
+                <Send className="size-4" />
+              )}
+              Save Assignments
+            </Button>
+          </PermissionGuard>
+          <SheetClose asChild>
+            <Button
+              type="button"
+              variant="outline"
+              disabled={replaceAssignmentsMutation.isPending}
+            >
+              Cancel
+            </Button>
+          </SheetClose>
+        </SheetFooter>
+      </SheetContent>
+    </Sheet>
+  );
+}
diff --git a/src/app/(modules)/ticket/[ticketId]/components/repair-report/RepairReportPanel.tsx b/src/app/(modules)/ticket/[ticketId]/components/repair-report/RepairReportPanel.tsx
index b884944..3ae7383 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/repair-report/RepairReportPanel.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/repair-report/RepairReportPanel.tsx
@@ -1,13 +1,12 @@
 'use client';
 
-import { FileText, MessageSquareQuote, BadgeCheck  } from 'lucide-react';
+import { FileText, MessageSquareQuote } from 'lucide-react';
 
 import type { TicketDetail } from '@/types';
 
 import {
   EmptyPanel,
   formatRepairDate,
-  getPersonLabel,
 } from './repairReportUtils';
 
 function MetaLabel({ children }: { children: React.ReactNode }) {
@@ -34,9 +33,12 @@ function ReportField({
 }
 
 export function RepairReportPanel({ ticket }: { ticket: TicketDetail }) {
-  const repair = ticket.repair;
+  const repairs = (ticket.assignments ?? []).filter(
+    (assignment) => assignment.repair_submitted_at || assignment.repair_notes,
+  );
+  const firstRepair = repairs[0] ?? null;
 
-  if (!repair) {
+  if (!firstRepair) {
     return (
       <section className="space-y-4 rounded-xl border bg-card p-4 lg:p-6">
         <div className="flex items-center gap-2 border-b border-border pb-4">
@@ -60,37 +62,46 @@ export function RepairReportPanel({ ticket }: { ticket: TicketDetail }) {
           <FileText className="size-5 text-primary" />
           Repair Report
         </h3>
-        {repair.submitted_at ? (
+        {firstRepair.repair_submitted_at ? (
           <span className="text-xs text-muted-foreground italic">
-            Completed {formatRepairDate(repair.submitted_at)}
+            Completed {formatRepairDate(firstRepair.repair_submitted_at)}
           </span>
         ) : null}
       </div>
 
       <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
-        <ReportField label="Technician" value={getPersonLabel(ticket.worker)} />
+        <ReportField
+          label="Submitted Classes"
+          value={`${repairs.length} of ${(ticket.assignments ?? []).length}`}
+        />
+        <ReportField
+          label="Latest Contractor"
+          value={firstRepair.assigned_to_name ?? firstRepair.assigned_to_email}
+        />
         <ReportField
           label="Submitted At"
-          value={
-            repair.submitted_at ? formatRepairDate(repair.submitted_at) : null
-          }
+          value={formatRepairDate(firstRepair.repair_submitted_at)}
         />
       </div>
 
       <div className="space-y-2 pt-1">
         <MetaLabel>Repair Summary</MetaLabel>
-        {repair.notes?.trim() ? (
-          <>
-            <div className="rounded-lg border bg-muted/15 px-4 py-3">
-              <p className="text-sm leading-relaxed text-foreground/90">
-                {repair.notes}
-              </p>
-            </div>
-            {/* <div className="flex items-center gap-2 text-xs text-muted-foreground">
-              <BadgeCheck  className="size-3.5 text-primary" />
-              <span>Self-certified by {getPersonLabel(ticket.worker)}</span>
-            </div> */}
-          </>
+        {repairs.some((repair) => repair.repair_notes?.trim()) ? (
+          <div className="space-y-2">
+            {repairs.map((repair) => (
+              <div
+                key={repair.id}
+                className="rounded-lg border bg-muted/15 px-4 py-3"
+              >
+                <p className="text-xs font-medium text-muted-foreground">
+                  {repair.defect_display_name}
+                </p>
+                <p className="mt-1 text-sm leading-relaxed text-foreground/90">
+                  {repair.repair_notes || '-'}
+                </p>
+              </div>
+            ))}
+          </div>
         ) : (
           <EmptyPanel
             icon={MessageSquareQuote}
diff --git a/src/app/(modules)/ticket/[ticketId]/components/repair-report/RepairVideoComparison.tsx b/src/app/(modules)/ticket/[ticketId]/components/repair-report/RepairVideoComparison.tsx
index 60c8b07..ca4ee98 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/repair-report/RepairVideoComparison.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/repair-report/RepairVideoComparison.tsx
@@ -7,7 +7,10 @@ import type { TicketDetail } from '@/types';
 
 export function RepairVideoComparison({ ticket }: { ticket: TicketDetail }) {
   const originalVideoUrl = ticket.video?.url ?? null;
-  const repairVideoUrl = ticket.repair?.proof_video_url ?? null;
+  const repairedAssignment = (ticket.assignments ?? []).find(
+    (assignment) => assignment.repair_proof_video_url,
+  );
+  const repairVideoUrl = repairedAssignment?.repair_proof_video_url ?? null;
 
   return (
     <section className="space-y-4">
@@ -31,12 +34,12 @@ export function RepairVideoComparison({ ticket }: { ticket: TicketDetail }) {
           videoUrl={repairVideoUrl}
           meta="Contractor evidence video"
           emptyTitle={
-            ticket.repair
+            repairedAssignment
               ? 'No repair video uploaded'
               : 'No evidence submitted yet'
           }
           emptyDescription={
-            ticket.repair
+            repairedAssignment
               ? 'The assigned worker has not uploaded a repair video yet.'
               : 'Repair video will appear here once evidence is submitted.'
           }
diff --git a/src/app/(modules)/ticket/components/TicketColumns.tsx b/src/app/(modules)/ticket/components/TicketColumns.tsx
index d9ef6e8..8e1ed68 100644
--- a/src/app/(modules)/ticket/components/TicketColumns.tsx
+++ b/src/app/(modules)/ticket/components/TicketColumns.tsx
@@ -9,6 +9,17 @@ import { TicketStatusBadge } from './TicketStatusBadge';
 import { formatDate } from '@/utils/date';
 
 export function useTicketColumns(): ColumnDef<TicketListItem>[] {
+  const getAssignedNames = (ticket: TicketListItem) => {
+    const names = Array.from(
+      new Set(
+        (ticket.assignments ?? [])
+          .map((assignment) => assignment.assigned_to_name)
+          .filter(Boolean),
+      ),
+    );
+    return names.length ? names.join(', ') : 'N/A';
+  };
+
   return useMemo(
     () => [
       {
@@ -37,10 +48,19 @@ export function useTicketColumns(): ColumnDef<TicketListItem>[] {
         size: 120,
       },
       {
-        accessorKey: 'assigned_to_name',
-        header: 'Assigned To',
+        accessorKey: 'coverage',
+        header: 'Coverage',
+        size: 120,
+        cell: ({ row }) =>
+          row.original.coverage
+            ? `${row.original.coverage.assigned_count}/${row.original.coverage.total_count}`
+            : 'N/A',
+      },
+      {
+        accessorKey: 'assignments',
+        header: 'Contractors',
         size: 220,
-        cell: ({ row }) => row.original.assigned_to_name || 'N/A',
+        cell: ({ row }) => getAssignedNames(row.original),
       },
       {
         accessorKey: 'created_by_name',
diff --git a/src/app/(modules)/ticket/hooks/useTenantTicketTableEvents.ts b/src/app/(modules)/ticket/hooks/useTenantTicketTableEvents.ts
index ed7189b..996e47d 100644
--- a/src/app/(modules)/ticket/hooks/useTenantTicketTableEvents.ts
+++ b/src/app/(modules)/ticket/hooks/useTenantTicketTableEvents.ts
@@ -20,18 +20,19 @@ function patchTicketLists(
   event: TicketTableStatusEvent,
   params?: TicketListParams,
 ) {
-  if (!current || !event.id) return current;
+  const ticketId = event.id ?? event.ticket_id;
+  if (!current || !ticketId) return current;
 
   const nextRow = buildTicketListItem(event);
   const existingIndex = current.items.findIndex(
-    (ticket) => ticket.id === event.id,
+    (ticket) => ticket.id === ticketId,
   );
 
   if (existingIndex >= 0) {
     return {
       ...current,
       items: current.items.map((ticket) =>
-        ticket.id === event.id ? mergeTicketListItem(ticket, event) : ticket,
+        ticket.id === ticketId ? mergeTicketListItem(ticket, event) : ticket,
       ),
     };
   }
@@ -84,8 +85,9 @@ function getTicketListParams(queryKey: readonly unknown[]) {
 function buildTicketListItem(
   event: TicketTableStatusEvent,
 ): TicketListItem | null {
+  const ticketId = event.id ?? event.ticket_id;
   if (
-    !event.id ||
+    !ticketId ||
     !event.status ||
     event.detection_count === undefined ||
     !event.updated_at
@@ -94,11 +96,12 @@ function buildTicketListItem(
   }
 
   return {
-    id: event.id,
+    id: ticketId,
     chainage_id: event.chainage_id ?? null,
     chainage_name: event.chainage_name ?? null,
     status: event.status,
-    assigned_to_name: event.assigned_to_name ?? null,
+    assignments: event.assignments ?? [],
+    coverage: event.coverage ?? null,
     detection_count: event.detection_count,
     created_by_name: event.created_by_name ?? null,
     created_at: event.created_at ?? event.updated_at,
@@ -115,7 +118,8 @@ function mergeTicketListItem(
     chainage_id: event.chainage_id ?? current.chainage_id,
     chainage_name: event.chainage_name ?? current.chainage_name,
     status: event.status ?? current.status,
-    assigned_to_name: event.assigned_to_name ?? current.assigned_to_name,
+    assignments: event.assignments ?? current.assignments,
+    coverage: event.coverage ?? current.coverage,
     detection_count: event.detection_count ?? current.detection_count,
     created_by_name: event.created_by_name ?? current.created_by_name,
     created_at: event.created_at ?? current.created_at,
diff --git a/src/app/(modules)/ticket/hooks/useTicketDetailEvents.ts b/src/app/(modules)/ticket/hooks/useTicketDetailEvents.ts
index baf0510..d3ffaab 100644
--- a/src/app/(modules)/ticket/hooks/useTicketDetailEvents.ts
+++ b/src/app/(modules)/ticket/hooks/useTicketDetailEvents.ts
@@ -79,9 +79,9 @@ export function useTicketDetailEvents(
         });
         refetchTicket();
       },
-      error: (event: TicketStreamErrorEvent) => {
+      error: (event: TicketStreamErrorEvent | null) => {
         setErrorMessage(
-          event.message ?? 'Live ticket updates disconnected. Reconnecting...',
+          event?.message ?? 'Live ticket updates disconnected. Reconnecting...',
         );
       },
       heartbeat: () => undefined,
diff --git a/src/app/(modules)/ticket/hooks/useTicketQueries.ts b/src/app/(modules)/ticket/hooks/useTicketQueries.ts
index d53101a..7c66c64 100644
--- a/src/app/(modules)/ticket/hooks/useTicketQueries.ts
+++ b/src/app/(modules)/ticket/hooks/useTicketQueries.ts
@@ -6,10 +6,9 @@ import { toast } from 'sonner';
 
 import { ticketService } from '@/services/api';
 import type {
-  AssignTicketPayload,
   ReviewRepairPayload,
-  SubmitRepairPayload,
   SubmitRepairUploadPayload,
+  TicketAssignmentsPayload,
   TicketDetail,
   TicketListParams,
   TicketStatus,
@@ -71,6 +70,28 @@ export function useAssignableTicketUsersQuery(enabled: boolean) {
   });
 }
 
+export function useTicketDefectClassesQuery(
+  ticketId: string | undefined,
+  enabled: boolean,
+) {
+  return useQuery({
+    queryKey: ticketKeys.defectClasses(ticketId ?? ''),
+    queryFn: () => ticketService.getTicketDefectClasses(ticketId as string),
+    enabled: Boolean(enabled && ticketId),
+  });
+}
+
+export function useTicketAssignmentsQuery(
+  ticketId: string | undefined,
+  enabled: boolean,
+) {
+  return useQuery({
+    queryKey: ticketKeys.assignments(ticketId ?? ''),
+    queryFn: () => ticketService.getTicketAssignments(ticketId as string),
+    enabled: Boolean(enabled && ticketId),
+  });
+}
+
 function mergeTicketDetailResponse(
   current: TicketDetail | undefined,
   next: TicketDetail,
@@ -84,21 +105,24 @@ function mergeTicketDetailResponse(
   };
 }
 
-export function useAssignTicketMutation(ticketId: string) {
+export function useReplaceTicketAssignmentsMutation(ticketId: string) {
   const queryClient = useQueryClient();
 
   return useMutation({
-    mutationFn: (payload: AssignTicketPayload) =>
-      ticketService.assignTicket(ticketId, payload),
+    mutationFn: (payload: TicketAssignmentsPayload) =>
+      ticketService.replaceTicketAssignments(ticketId, payload),
     onSuccess: (ticket) => {
-      toast.success('Ticket assigned');
+      toast.success('Assignments saved');
       queryClient.setQueryData<TicketDetail>(
         ticketKeys.detail(ticketId),
         (current) => mergeTicketDetailResponse(current, ticket),
       );
+      queryClient.invalidateQueries({
+        queryKey: ticketKeys.assignments(ticketId),
+      });
       queryClient.invalidateQueries({ queryKey: ticketKeys.lists() });
     },
-    onError: () => toast.error('Failed to assign ticket'),
+    onError: () => toast.error('Failed to save assignments'),
   });
 }
 
@@ -119,48 +143,39 @@ export function useStartTicketMutation(ticketId: string) {
   });
 }
 
-export function useSubmitRepairMutation(ticketId: string) {
+export function useSubmitAssignmentRepairUploadMutation(
+  ticketId: string,
+  assignmentId: number,
+) {
   const queryClient = useQueryClient();
 
   return useMutation({
-    mutationFn: (payload: SubmitRepairPayload) =>
-      ticketService.submitRepair(ticketId, payload),
+    mutationFn: (payload: SubmitRepairUploadPayload) =>
+      ticketService.submitAssignmentRepairUpload(ticketId, assignmentId, payload),
     onSuccess: (ticket) => {
       toast.success('Repair submitted');
       queryClient.setQueryData<TicketDetail>(
         ticketKeys.detail(ticketId),
         (current) => mergeTicketDetailResponse(current, ticket),
       );
+      queryClient.invalidateQueries({
+        queryKey: ticketKeys.assignments(ticketId),
+      });
       queryClient.invalidateQueries({ queryKey: ticketKeys.lists() });
     },
     onError: () => toast.error('Failed to submit repair'),
   });
 }
 
-export function useSubmitRepairUploadMutation(ticketId: string) {
-  const queryClient = useQueryClient();
-
-  return useMutation({
-    mutationFn: (payload: SubmitRepairUploadPayload) =>
-      ticketService.submitRepairUpload(ticketId, payload),
-    onSuccess: (ticket) => {
-      toast.success('Repair evidence uploaded');
-      queryClient.setQueryData<TicketDetail>(
-        ticketKeys.detail(ticketId),
-        (current) => mergeTicketDetailResponse(current, ticket),
-      );
-      queryClient.invalidateQueries({ queryKey: ticketKeys.lists() });
-    },
-    onError: () => toast.error('Failed to upload repair evidence'),
-  });
-}
-
-export function useReviewRepairMutation(ticketId: string) {
+export function useReviewAssignmentRepairMutation(
+  ticketId: string,
+  assignmentId: number,
+) {
   const queryClient = useQueryClient();
 
   return useMutation({
     mutationFn: (payload: ReviewRepairPayload) =>
-      ticketService.reviewRepair(ticketId, payload),
+      ticketService.reviewRepair(ticketId, assignmentId, payload),
     onSuccess: (ticket, payload) => {
       toast.success(
         payload.action === 'approve' ? 'Repair approved' : 'Repair rejected',
@@ -169,6 +184,9 @@ export function useReviewRepairMutation(ticketId: string) {
         ticketKeys.detail(ticketId),
         (current) => mergeTicketDetailResponse(current, ticket),
       );
+      queryClient.invalidateQueries({
+        queryKey: ticketKeys.assignments(ticketId),
+      });
       queryClient.invalidateQueries({ queryKey: ticketKeys.lists() });
     },
     onError: () => toast.error('Failed to review repair'),
diff --git a/src/app/(modules)/ticket/queries/ticketKeys.ts b/src/app/(modules)/ticket/queries/ticketKeys.ts
index 6d8c458..be4fe8f 100644
--- a/src/app/(modules)/ticket/queries/ticketKeys.ts
+++ b/src/app/(modules)/ticket/queries/ticketKeys.ts
@@ -7,4 +7,8 @@ export const ticketKeys = {
   details: () => [...ticketKeys.all, 'detail'] as const,
   detail: (ticketId: string) => [...ticketKeys.details(), ticketId] as const,
   assignableUsers: () => [...ticketKeys.all, 'assignable-users'] as const,
+  defectClasses: (ticketId: string) =>
+    [...ticketKeys.detail(ticketId), 'defect-classes'] as const,
+  assignments: (ticketId: string) =>
+    [...ticketKeys.detail(ticketId), 'assignments'] as const,
 };
diff --git a/src/components/lookups/AssignableWorkerSelect.tsx b/src/components/lookups/AssignableWorkerSelect.tsx
index 1f95c52..971b8bb 100644
--- a/src/components/lookups/AssignableWorkerSelect.tsx
+++ b/src/components/lookups/AssignableWorkerSelect.tsx
@@ -21,6 +21,7 @@ export function AssignableWorkerSelect({
   value,
   onValueChange,
   disabled = false,
+  portalContainer,
 }: AssignableWorkerSelectProps) {
   const lookup = usePaginatedSelect<AssignableTicketUser>({
     selectedValue: value,
@@ -66,6 +67,7 @@ export function AssignableWorkerSelect({
       placeholder="Select contractor"
       searchPlaceholder="Search contractors"
       emptyMessage="No assignable contractors found."
+      portalContainer={portalContainer}
     />
   );
 }
diff --git a/src/components/lookups/AssignableWorkerSelect.types.ts b/src/components/lookups/AssignableWorkerSelect.types.ts
index 09dda04..313051d 100644
--- a/src/components/lookups/AssignableWorkerSelect.types.ts
+++ b/src/components/lookups/AssignableWorkerSelect.types.ts
@@ -1,5 +1,8 @@
+import type { RefObject } from 'react';
+
 export interface AssignableWorkerSelectProps {
   value: string;
   onValueChange: (value: string) => void;
   disabled?: boolean;
+  portalContainer?: RefObject<HTMLDivElement | null>;
 }
diff --git a/src/constants/apiRoutes.ts b/src/constants/apiRoutes.ts
index c9c6d14..ac0a4d0 100644
--- a/src/constants/apiRoutes.ts
+++ b/src/constants/apiRoutes.ts
@@ -55,12 +55,19 @@ export const API_ROUTES = {
   TICKETS: {
     BASE: '/biz/api/v1/tickets',
     DETAIL: (id: string) => `/biz/api/v1/tickets/${id}`,
-    ASSIGN: (id: string) => `/biz/api/v1/tickets/${id}/assign`,
+    DEFECT_CLASSES: (id: string) =>
+      `/biz/api/v1/tickets/${id}/defect-classes`,
+    ASSIGNMENTS: (id: string) => `/biz/api/v1/tickets/${id}/assignments`,
+    ASSIGNMENT_DETAIL: (ticketId: string, assignmentId: number) =>
+      `/biz/api/v1/tickets/${ticketId}/assignments/${assignmentId}`,
     START: (id: string) => `/biz/api/v1/tickets/${id}/start`,
-    SUBMIT_REPAIR: (id: string) => `/biz/api/v1/tickets/${id}/submit-repair`,
-    SUBMIT_REPAIR_UPLOAD: (id: string) =>
-      `/biz/api/v1/tickets/${id}/submit-repair/upload`,
-    REVIEW: (id: string) => `/biz/api/v1/tickets/${id}/review`,
+    SUBMIT_ASSIGNMENT_REPAIR_UPLOAD: (
+      ticketId: string,
+      assignmentId: number,
+    ) =>
+      `/biz/api/v1/tickets/${ticketId}/assignments/${assignmentId}/submit-repair/upload`,
+    REVIEW_ASSIGNMENT: (ticketId: string, assignmentId: number) =>
+      `/biz/api/v1/tickets/${ticketId}/assignments/${assignmentId}/review`,
     CLOSE: (id: string) => `/biz/api/v1/tickets/${id}/close`,
     DETAIL_EVENTS_TOKEN: (id: string) =>
       `/biz/api/v1/tickets/${id}/events/token`,
diff --git a/src/services/api/ticket.service.ts b/src/services/api/ticket.service.ts
index 6df5d56..8b40682 100644
--- a/src/services/api/ticket.service.ts
+++ b/src/services/api/ticket.service.ts
@@ -1,16 +1,19 @@
 import axiosClient from '../axios/axios';
 import { API_ROUTES } from '@/constants/apiRoutes';
 import type {
-  AssignTicketPayload,
   AssignableTicketUsersResponse,
   AssignableTicketUsersParams,
   ReviewRepairPayload,
   SseTokenResponse,
-  SubmitRepairPayload,
   SubmitRepairUploadPayload,
+  TicketAssignmentListResponse,
+  TicketAssignmentsPayload,
+  TicketAssignmentSummary,
+  TicketDefectClassesResponse,
   TicketDetail,
   TicketListParams,
   TicketListResponse,
+  UpdateTicketAssignmentPayload,
 } from '@/types';
 
 export const ticketService = {
@@ -54,17 +57,78 @@ export const ticketService = {
     return response.data;
   },
 
-  assignTicket: async (
+  getTicketDefectClasses: async (
     ticketId: string,
-    payload: AssignTicketPayload,
+  ): Promise<TicketDefectClassesResponse> => {
+    const response = await axiosClient.get<TicketDefectClassesResponse>(
+      API_ROUTES.TICKETS.DEFECT_CLASSES(ticketId),
+    );
+    return response.data;
+  },
+
+  getTicketAssignments: async (
+    ticketId: string,
+  ): Promise<TicketAssignmentListResponse> => {
+    const response = await axiosClient.get<TicketAssignmentListResponse>(
+      API_ROUTES.TICKETS.ASSIGNMENTS(ticketId),
+    );
+    return response.data;
+  },
+
+  getTicketAssignment: async (
+    ticketId: string,
+    assignmentId: number,
+  ): Promise<TicketAssignmentSummary> => {
+    const response = await axiosClient.get<TicketAssignmentSummary>(
+      API_ROUTES.TICKETS.ASSIGNMENT_DETAIL(ticketId, assignmentId),
+    );
+    return response.data;
+  },
+
+  addTicketAssignments: async (
+    ticketId: string,
+    payload: TicketAssignmentsPayload,
   ): Promise<TicketDetail> => {
     const response = await axiosClient.post<TicketDetail>(
-      API_ROUTES.TICKETS.ASSIGN(ticketId),
+      API_ROUTES.TICKETS.ASSIGNMENTS(ticketId),
       payload,
     );
     return response.data;
   },
 
+  replaceTicketAssignments: async (
+    ticketId: string,
+    payload: TicketAssignmentsPayload,
+  ): Promise<TicketDetail> => {
+    const response = await axiosClient.put<TicketDetail>(
+      API_ROUTES.TICKETS.ASSIGNMENTS(ticketId),
+      payload,
+    );
+    return response.data;
+  },
+
+  updateTicketAssignment: async (
+    ticketId: string,
+    assignmentId: number,
+    payload: UpdateTicketAssignmentPayload,
+  ): Promise<TicketDetail> => {
+    const response = await axiosClient.patch<TicketDetail>(
+      API_ROUTES.TICKETS.ASSIGNMENT_DETAIL(ticketId, assignmentId),
+      payload,
+    );
+    return response.data;
+  },
+
+  deleteTicketAssignment: async (
+    ticketId: string,
+    assignmentId: number,
+  ): Promise<TicketDetail> => {
+    const response = await axiosClient.delete<TicketDetail>(
+      API_ROUTES.TICKETS.ASSIGNMENT_DETAIL(ticketId, assignmentId),
+    );
+    return response.data;
+  },
+
   startTicket: async (ticketId: string): Promise<TicketDetail> => {
     const response = await axiosClient.post<TicketDetail>(
       API_ROUTES.TICKETS.START(ticketId),
@@ -72,19 +136,9 @@ export const ticketService = {
     return response.data;
   },
 
-  submitRepair: async (
-    ticketId: string,
-    payload: SubmitRepairPayload,
-  ): Promise<TicketDetail> => {
-    const response = await axiosClient.post<TicketDetail>(
-      API_ROUTES.TICKETS.SUBMIT_REPAIR(ticketId),
-      payload,
-    );
-    return response.data;
-  },
-
-  submitRepairUpload: async (
+  submitAssignmentRepairUpload: async (
     ticketId: string,
+    assignmentId: number,
     payload: SubmitRepairUploadPayload,
   ): Promise<TicketDetail> => {
     const formData = new FormData();
@@ -95,7 +149,10 @@ export const ticketService = {
     });
 
     const response = await axiosClient.post<TicketDetail>(
-      API_ROUTES.TICKETS.SUBMIT_REPAIR_UPLOAD(ticketId),
+      API_ROUTES.TICKETS.SUBMIT_ASSIGNMENT_REPAIR_UPLOAD(
+        ticketId,
+        assignmentId,
+      ),
       formData,
       {
         headers: {
@@ -108,10 +165,11 @@ export const ticketService = {
 
   reviewRepair: async (
     ticketId: string,
+    assignmentId: number,
     payload: ReviewRepairPayload,
   ): Promise<TicketDetail> => {
     const response = await axiosClient.post<TicketDetail>(
-      API_ROUTES.TICKETS.REVIEW(ticketId),
+      API_ROUTES.TICKETS.REVIEW_ASSIGNMENT(ticketId, assignmentId),
       payload,
     );
     return response.data;
diff --git a/src/services/axios/axios.ts b/src/services/axios/axios.ts
index b5820ea..fbcb5a8 100644
--- a/src/services/axios/axios.ts
+++ b/src/services/axios/axios.ts
@@ -8,7 +8,7 @@ const BASE_URL = ENV_CONSTANT.BASE_API_URL;
 const axiosClient = axios.create({
   baseURL: BASE_URL,
   headers: {
-    'Content-Type': 'application/json',
+    // 'Content-Type': 'application/json',
   },
 });
 
diff --git a/src/types/ticket/actions.ts b/src/types/ticket/actions.ts
index c10e381..f21dfa4 100644
--- a/src/types/ticket/actions.ts
+++ b/src/types/ticket/actions.ts
@@ -1,5 +1,11 @@
 import type { PaginationParams } from '../common';
 
+export type AssignmentStatus =
+  | 'assigned'
+  | 'under_review'
+  | 'approved'
+  | 'rejected';
+
 export interface AssignableTicketUser {
   id: number;
   name: string;
@@ -16,15 +22,70 @@ export interface AssignableTicketUsersResponse {
   total: number;
 }
 
-export interface AssignTicketPayload {
+export interface TicketDefectClass {
+  class_name: string;
+  display_name: string;
+}
+
+export interface TicketDefectClassesResponse {
+  ticket_id: string;
+  video_id: string;
+  defect_classes: TicketDefectClass[];
+}
+
+export interface TicketCoverage {
+  total_defect_classes: string[];
+  assigned_defect_classes: string[];
+  unassigned_defect_classes: string[];
+  is_fully_assigned: boolean;
+  assigned_count: number;
+  total_count: number;
+}
+
+export interface TicketAssignmentSummary {
+  id: number;
+  assigned_to_user_id: number;
+  assigned_to_email: string | null;
+  assigned_to_name: string | null;
+  defect_class: string;
+  defect_display_name: string;
+  status: AssignmentStatus;
+  note: string | null;
+  assigned_by_user_id: number | null;
+  assigned_by_name: string | null;
+  assigned_at: string | null;
+  repair_notes: string | null;
+  repair_proof_video_url: string | null;
+  repair_proof_image_urls: string[];
+  repair_submitted_at: string | null;
+  reviewed_by_user_id: number | null;
+  reviewed_by_name: string | null;
+  review_comment: string | null;
+  reviewed_at: string | null;
+}
+
+export interface TicketAssignmentListResponse {
+  items: TicketAssignmentSummary[];
+  total: number;
+}
+
+export interface TicketAssignmentInput {
   assigned_to_user_id: number;
   assigned_to_email?: string;
+  defect_class: string;
   note?: string;
 }
 
-export interface SubmitRepairPayload {
-  notes: string;
-  proof_path: string;
+export interface TicketAssignmentsPayload {
+  assignments: TicketAssignmentInput[];
+  note?: string;
+}
+
+export interface UpdateTicketAssignmentPayload {
+  assigned_to_user_id?: number;
+  assigned_to_email?: string;
+  defect_class?: string;
+  note?: string;
 }
 
 export interface SubmitRepairUploadPayload {
diff --git a/src/types/ticket/detail.ts b/src/types/ticket/detail.ts
index 74764df..dd90752 100644
--- a/src/types/ticket/detail.ts
+++ b/src/types/ticket/detail.ts
@@ -1,3 +1,4 @@
+import type { TicketAssignmentSummary, TicketCoverage } from './actions';
 import type { TicketStatus } from './status';
 
 export interface TicketActor {
@@ -32,26 +33,10 @@ export interface TicketVideo {
   thumbnail: string | null;
 }
 
-export interface TicketWorker extends TicketActor {
-  assigned_at: string | null;
-  assigned_by: TicketActor | null;
-}
-
-export interface TicketRepair {
-  notes: string | null;
-  proof_video_url: string | null;
-  proof_image_urls: string[];
-  submitted_at: string | null;
-}
-
-export interface TicketReviewer extends TicketActor {
-  review_comment: string | null;
-  reviewed_at: string | null;
-}
-
 export interface TicketAiResult {
   detection_count: number;
   completed_at: string | null;
+  available_defect_classes?: string[];
 }
 
 export interface TicketTenant {
@@ -68,13 +53,13 @@ export interface TicketDetail {
   id: string;
   video_id: string;
   chainage_id: string | null;
+  chainage_name?: string | null;
   status: TicketStatus;
   status_metadata: TicketStatusMetadata | null;
   video: TicketVideo | null;
   uploader: TicketActor | null;
-  worker: TicketWorker | null;
-  repair: TicketRepair | null;
-  reviewer: TicketReviewer | null;
+  assignments: TicketAssignmentSummary[];
+  coverage: TicketCoverage | null;
   ai_result: TicketAiResult | null;
   tenant: TicketTenant | null;
   timestamps: TicketTimestamps;
diff --git a/src/types/ticket/events.ts b/src/types/ticket/events.ts
index a16bab5..c02b9d4 100644
--- a/src/types/ticket/events.ts
+++ b/src/types/ticket/events.ts
@@ -1,4 +1,5 @@
 import type { TicketDetail } from './detail';
+import type { TicketAssignmentSummary, TicketCoverage } from './actions';
 import type { TicketStatus } from './status';
 
 export interface SseTokenResponse {
@@ -8,12 +9,15 @@ export interface SseTokenResponse {
 
 export type TicketTableStatusEvent = {
   type?: 'ticket_status';
-  kind?: 'created' | 'transitioned';
-  id: string;
+  kind?: 'created' | 'transitioned' | 'snapshot';
+  id?: string;
+  ticket_id?: string;
   chainage_id?: string | null;
   chainage_name?: string | null;
   status?: TicketStatus;
-  assigned_to_name?: string | null;
+  assignments?: TicketAssignmentSummary[];
+  coverage?: TicketCoverage | null;
+  assignment_summary?: Partial<Record<string, number>>;
   detection_count?: number;
   created_by_name?: string | null;
   created_at?: string;
diff --git a/src/types/ticket/list.ts b/src/types/ticket/list.ts
index 4b2ad4d..923f8df 100644
--- a/src/types/ticket/list.ts
+++ b/src/types/ticket/list.ts
@@ -1,4 +1,5 @@
 import type { PaginationParams } from '../common';
+import type { TicketAssignmentSummary, TicketCoverage } from './actions';
 import type { TicketStatus } from './status';
 
 export interface TicketListParams extends PaginationParams {
@@ -11,7 +12,8 @@ export interface TicketListItem {
   chainage_id: string | null;
   chainage_name: string | null;
   status: TicketStatus;
-  assigned_to_name: string | null;
+  assignments: TicketAssignmentSummary[];
+  coverage: TicketCoverage | null;
   detection_count: number;
   created_by_name: string | null;
   created_at: string;