feat(notifications): open comment, mention, assignment and uplift items where they happened

Comment and mention items open the work order on the Comments tab with the
comments they were raised for highlighted; a grouped assignment opens the
dispatcher's own open queue; uplift decisions open the work order's uplifts.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/app/(protected)/workorders/_components/detail/tabs/slide-over-comments-tab.tsx

@@ -1,13 +1,28 @@
-import { useState } from "react";
+import { useMemo, useState } from "react";
 import { Pencil } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { Text } from "@/components/ui/text";
 import type { WorkOrderComment } from "@/domain/work-orders/types/work-order";
+import { highlightedCommentIds } from "@/domain/work-orders/utils/comment-highlight";
 import { isOwnWorkOrderComment } from "@/domain/work-orders/utils/comment-ownership";
 import {
   getAvatarColorFromName,
   getInitialsFromName,
 } from "@/domain/work-orders/utils/dispatcher-avatar-color";
+import type { CommentHighlight } from "@/domain/work-orders/utils/work-order-deep-link";
+
+const HIGHLIGHTED_COMMENT_STYLE = {
+  background: "var(--color-primary-tint)",
+  borderLeft: "2px solid var(--color-primary)",
+  paddingLeft: 8,
+} as const;
+
+// Brings the first comment a notification pointed at into view when it mounts.
+function scrollIntoViewOnMount(node: HTMLDivElement | null): void {
+  if (node != null && typeof node.scrollIntoView === "function") {
+    node.scrollIntoView({ block: "nearest" });
+  }
+}
 
 function formatCommentTime(value: string): string {
   if (!value) return "";
@@ -140,6 +155,8 @@ type SlideOverCommentsTabProps = {
   isReadOnly: boolean;
   isPending: boolean;
   currentUserId?: string | number;
+  /** Set when a comment or mention notification opened this tab. */
+  highlight?: CommentHighlight | null;
   isUpdatePending?: boolean;
   onSubmit: (text: string, options?: { onSuccess?: () => void }) => void;
   onUpdateComment?: (
@@ -154,10 +171,16 @@ export function SlideOverCommentsTab({
   isReadOnly,
   isPending,
   currentUserId,
+  highlight,
   isUpdatePending = false,
   onSubmit,
   onUpdateComment,
 }: SlideOverCommentsTabProps) {
+  const highlightedIds = useMemo(
+    () => highlightedCommentIds(comments, highlight, currentUserId),
+    [comments, highlight, currentUserId],
+  );
+  const firstHighlightedId = comments.find((comment) => highlightedIds.has(String(comment.id)))?.id;
   const [commentText, setCommentText] = useState("");
   const [editingCommentId, setEditingCommentId] = useState<string | number | null>(null);
   const [draftText, setDraftText] = useState("");
@@ -238,12 +261,19 @@ export function SlideOverCommentsTab({
               Boolean(onUpdateComment) &&
               isOwnWorkOrderComment(comment, currentUserId);
             const isEditing = editingCommentId === comment.id;
+            const isHighlighted = highlightedIds.has(String(comment.id));
 
             return (
               <div
                 key={String(comment.id)}
-                style={{ borderBottom: "1px solid var(--color-bg-muted)" }}
+                ref={comment.id === firstHighlightedId ? scrollIntoViewOnMount : undefined}
+                data-highlighted={isHighlighted}
+                style={{
+                  borderBottom: "1px solid var(--color-bg-muted)",
+                  ...(isHighlighted ? HIGHLIGHTED_COMMENT_STYLE : {}),
+                }}
               >
+                {isHighlighted && <span className="sr-only">New for you: </span>}
                 <SlideOverCommentItem
                   comment={comment}
                   canEdit={canEdit}

src/app/(protected)/workorders/_components/detail/work-order-slide-over-tabs.tsx

@@ -11,6 +11,7 @@ import type {
 } from "@/domain/work-orders/types/work-order";
 import type { WorkOrderTableRow } from "@/domain/work-orders/types/work-order-table-row";
 import { resolveSlideOverAvetaRequired } from "@/domain/work-orders/utils/resolve-slide-over-aveta-required";
+import type { CommentHighlight } from "@/domain/work-orders/utils/work-order-deep-link";
 import type { useWorkOrderSlideOver, SlideOverTab } from "./use-work-order-slide-over";
 import { WorkOrderSlideOverTabPanel } from "./work-order-slide-over-tab-panel";
 
@@ -25,6 +26,7 @@ type WorkOrderSlideOverTabsProps = {
   vendors: VendorDropdownItem[];
   pmTypes: string[];
   allOrders: WorkOrderTableRow[];
+  commentHighlight?: CommentHighlight | null;
   onDuplicateFound?: (existing: WorkOrderTableRow) => void;
   onOpenCompletionDoc: () => void;
   onRequestComplete?: () => void;
@@ -39,6 +41,7 @@ export function WorkOrderSlideOverTabs({
   vendors,
   pmTypes,
   allOrders,
+  commentHighlight,
   onDuplicateFound,
   onOpenCompletionDoc,
   onRequestComplete,
@@ -82,6 +85,7 @@ export function WorkOrderSlideOverTabs({
               isReadOnly={state.isCommentsReadOnly}
               isPending={state.commentMutation.isPending}
               currentUserId={state.user?.id}
+              highlight={commentHighlight}
               isUpdatePending={state.updateCommentMutation.isPending}
               onSubmit={(text, options) => state.commentMutation.mutate({ text }, options)}
               onUpdateComment={(commentId, text, options) =>

src/app/(protected)/workorders/_components/detail/work-order-slide-over.tsx

@@ -11,6 +11,7 @@ import type {
   WorkOrderTablePatch,
   WorkOrderTableRow,
 } from "@/domain/work-orders/types/work-order-table-row";
+import type { CommentHighlight } from "@/domain/work-orders/utils/work-order-deep-link";
 import { useWorkOrderSlideOver, type SlideOverTab } from "./use-work-order-slide-over";
 import { WorkOrderSlideOverTabNav } from "./work-order-slide-over-tab-nav";
 import { WorkOrderSlideOverTabs } from "./work-order-slide-over-tabs";
@@ -36,6 +37,8 @@ type WorkOrderSlideOverProps = {
   onClose: () => void;
   saving?: boolean;
   initialTab?: SlideOverTab;
+  /** Comments a notification opened the slide-over for; highlighted on the Comments tab. */
+  commentHighlight?: CommentHighlight | null;
 };
 
 export function WorkOrderSlideOver({
@@ -54,6 +57,7 @@ export function WorkOrderSlideOver({
   onClose,
   saving,
   initialTab,
+  commentHighlight,
 }: WorkOrderSlideOverProps) {
   const state = useWorkOrderSlideOver({ row, editMode, onSave, onClose, saving, initialTab });
   const { infoSource, activeDraft } = state;
@@ -87,6 +91,7 @@ export function WorkOrderSlideOver({
             vendors={vendors}
             pmTypes={pmTypes}
             allOrders={allOrders}
+            commentHighlight={commentHighlight}
             onDuplicateFound={onDuplicateFound}
             onOpenCompletionDoc={() => onOpenCompletionDoc(infoSource)}
             onRequestComplete={() => onRequestComplete?.(infoSource)}

src/app/(protected)/workorders/_components/list/work-orders-list-page-panels.tsx

@@ -52,6 +52,7 @@ export function WorkOrdersListPagePanels({ page }: WorkOrdersListPagePanelsProps
         row={page.activeSlideOverRow}
         editMode={page.slideOverEdit}
         initialTab={page.slideOverTab}
+        commentHighlight={page.slideOverHighlight}
         users={users}
         sites={locations}
         vendors={vendors}

src/app/(protected)/workorders/_hooks/use-work-order-deep-link.ts

@@ -4,27 +4,54 @@ import type { SlideOverTab } from "@/app/(protected)/workorders/_components/deta
 import type { WorkOrderTableRow } from "@/domain/work-orders/types/work-order-table-row";
 import { useWorkOrderBoardDetail } from "@/domain/work-orders/use-cases/use-work-order-detail";
 import {
+  type CommentHighlight,
+  type WorkOrderDeepLinkTab,
   parseWorkOrderDeepLink,
   withoutWorkOrderDeepLink,
 } from "@/domain/work-orders/utils/work-order-deep-link";
 
-type OpenSlideOver = (row: WorkOrderTableRow, edit: boolean, tab: SlideOverTab) => void;
+export type WorkOrderDeepLinkHandlers = {
+  onOpenSlideOver: (
+    row: WorkOrderTableRow,
+    edit: boolean,
+    tab: SlideOverTab,
+    highlight: CommentHighlight | null,
+  ) => void;
+  /** The uplifts surface is the dialog the board's Uplift column opens. */
+  onOpenUplifts: (row: WorkOrderTableRow) => void;
+};
+
+function openLink(
+  handlers: WorkOrderDeepLinkHandlers,
+  row: WorkOrderTableRow,
+  tab: WorkOrderDeepLinkTab,
+  highlight: CommentHighlight | null,
+): void {
+  if (tab === "uplifts") {
+    handlers.onOpenUplifts(row);
+    return;
+  }
+  handlers.onOpenSlideOver(row, false, tab, highlight);
+}
 
 /**
- * Opens `?wo=<id>&tab=<tab>` in the slide-over once that work order's detail loads, whatever week
+ * Opens `?wo=<id>&tab=<tab>` once that work order's detail loads, whatever week the board is
- * the board is showing, then removes the params so closing the slide-over does not reopen it.
+ * showing, then removes the params so closing does not reopen it. `tab=uplifts` opens the
+ * uplifts dialog; every other tab opens the slide-over.
  */
-export function useWorkOrderDeepLink(onOpen: OpenSlideOver): void {
+export function useWorkOrderDeepLink(handlers: WorkOrderDeepLinkHandlers): void {
   const [searchParams, setSearchParams] = useSearchParams();
   const link = parseWorkOrderDeepLink(searchParams);
   const workOrderId = link?.workOrderId;
   const tab = link?.tab ?? "info";
+  const since = link?.highlight?.since;
+  const mentions = link?.highlight?.mentions ?? false;
   const { data, error } = useWorkOrderBoardDetail(workOrderId, workOrderId != null);
-  const onOpenRef = useRef(onOpen);
+  const handlersRef = useRef(handlers);
 
   useEffect(() => {
-    onOpenRef.current = onOpen;
+    handlersRef.current = handlers;
-  }, [onOpen]);
+  }, [handlers]);
 
   useEffect(() => {
     if (workOrderId == null) {
@@ -35,8 +62,8 @@ export function useWorkOrderDeepLink(onOpen: OpenSlideOver): void {
       return;
     }
     if (loaded) {
-      onOpenRef.current(data.info, false, tab);
+      openLink(handlersRef.current, data.info, tab, since == null ? null : { since, mentions });
     }
     setSearchParams(withoutWorkOrderDeepLink(searchParams), { replace: true });
-  }, [workOrderId, tab, data, error, searchParams, setSearchParams]);
+  }, [workOrderId, tab, since, mentions, data, error, searchParams, setSearchParams]);
 }

src/app/(protected)/workorders/_hooks/use-work-orders-list-page.ts

@@ -10,6 +10,7 @@ import {
 import { useWorkOrderUsers } from "@/domain/work-orders/use-cases/use-work-orders-list";
 import { useWorkOrderTableMutations } from "@/domain/work-orders/use-cases/use-work-order-table-mutations";
 import { shouldCompleteAfterCompletionDoc } from "@/domain/work-orders/utils/completion-doc-auto-complete";
+import type { CommentHighlight } from "@/domain/work-orders/utils/work-order-deep-link";
 import {
   patchWorkOrderAsCanceled,
   patchWorkOrderAsCompleted,
@@ -18,11 +19,36 @@ import { guardDialogClose } from "@/lib/dialog-guard";
 import { useWorkOrdersListFilters } from "./use-work-orders-list-filters";
 import { useWorkOrdersTableData } from "./use-work-orders-table-data";
 
+function useSlideOverState() {
+  const [row, setRow] = useState<WorkOrderTableRow | null>(null);
+  const [edit, setEdit] = useState(false);
+  const [tab, setTab] = useState<SlideOverTab>("info");
+  const [highlight, setHighlight] = useState<CommentHighlight | null>(null);
+
+  const open = (
+    next: WorkOrderTableRow,
+    nextEdit = false,
+    nextTab: SlideOverTab = "info",
+    nextHighlight: CommentHighlight | null = null,
+  ) => {
+    setRow(next);
+    setEdit(nextEdit);
+    setTab(nextTab);
+    setHighlight(nextHighlight);
+  };
+
+  const close = () => {
+    setRow(null);
+    setEdit(false);
+    setHighlight(null);
+  };
+
+  return { row, edit, tab, highlight, open, close };
+}
+
 export function useWorkOrdersListPage() {
   const [wizardOpen, setWizardOpen] = useState(false);
-  const [slideOverRow, setSlideOverRow] = useState<WorkOrderTableRow | null>(null);
+  const slideOver = useSlideOverState();
-  const [slideOverEdit, setSlideOverEdit] = useState(false);
-  const [slideOverTab, setSlideOverTab] = useState<SlideOverTab>("info");
   const [confirmCancel, setConfirmCancel] = useState<WorkOrderTableRow | null>(null);
   const [confirmComplete, setConfirmComplete] = useState<WorkOrderTableRow | null>(null);
   const [docRow, setDocRow] = useState<WorkOrderTableRow | null>(null);
@@ -56,6 +82,7 @@ export function useWorkOrdersListPage() {
     [vendors],
   );
 
+  const slideOverRow = slideOver.row;
   const activeSlideOverRow = useMemo(() => {
     if (!slideOverRow) return null;
     return tableData.rows.find((row) => row.id === slideOverRow.id) ?? slideOverRow;
@@ -76,19 +103,8 @@ export function useWorkOrdersListPage() {
     return tableData.rows.find((row) => row.id === upliftsRow.id) ?? upliftsRow;
   }, [upliftsRow, tableData.rows]);
 
-  const handleOpenSlideOver = (
-    row: WorkOrderTableRow,
-    edit = false,
-    tab: SlideOverTab = "info",
-  ) => {
-    setSlideOverRow(row);
-    setSlideOverEdit(edit);
-    setSlideOverTab(tab);
-  };
-
   const handleCloseSlideOver = () => {
-    setSlideOverRow(null);
+    slideOver.close();
-    setSlideOverEdit(false);
     tableData.setSelectedId(null);
   };
 
@@ -136,8 +152,9 @@ export function useWorkOrdersListPage() {
   return {
     wizardOpen,
     setWizardOpen,
-    slideOverEdit,
+    slideOverEdit: slideOver.edit,
-    slideOverTab,
+    slideOverTab: slideOver.tab,
+    slideOverHighlight: slideOver.highlight,
     confirmCancel,
     setConfirmCancel,
     confirmComplete,
@@ -163,7 +180,7 @@ export function useWorkOrdersListPage() {
     activeDocRow,
     activeMediaRow,
     activeUpliftsRow,
-    handleOpenSlideOver,
+    handleOpenSlideOver: slideOver.open,
     handleCloseSlideOver,
     handleConfirmCancel,
     handleConfirmComplete,

src/app/(protected)/workorders/index.tsx

@@ -28,7 +28,10 @@ export default function WorkOrdersListPage() {
   const page = useWorkOrdersListPage();
   const { filters, tableData } = page;
   const fromDashboard = useDashboardDrilldownFilters(filters.applyAdvancedFilters);
-  useWorkOrderDeepLink(page.handleOpenSlideOver);
+  useWorkOrderDeepLink({
+    onOpenSlideOver: page.handleOpenSlideOver,
+    onOpenUplifts: page.setUpliftsRow,
+  });
 
   return (
     <Box className="flex h-full flex-col overflow-hidden p-2.5">

src/components/notifications/notification-row.tsx

@@ -1,11 +1,14 @@
+import { createElement } from "react";
 import type { LucideIcon } from "lucide-react";
 import {
   AlertTriangle,
   Bell,
+  CircleDollarSign,
   Clock,
   Inbox,
   MessageSquare,
   ShieldAlert,
+  UserPlus,
   Wrench,
   X,
 } from "lucide-react";
@@ -25,6 +28,24 @@ const REASON_ICONS: Record<string, LucideIcon> = {
   "vendor-conflict": Wrench,
 };
 
+const ICON_PROPS = {
+  size: 15,
+  "aria-hidden": true,
+  className: "shrink-0",
+  style: { color: "var(--color-text-muted)", marginTop: 2 },
+} as const;
+
+// Recent activity mixes comments, assignments and uplift decisions; where the row leads tells them apart.
+function ItemIcon({ item }: { item: NotificationItem }) {
+  if (item.reason === "activity" && item.target.tab === "uplifts") {
+    return <CircleDollarSign {...ICON_PROPS} />;
+  }
+  if (item.reason === "activity" && item.target.tab !== "comments") {
+    return <UserPlus {...ICON_PROPS} />;
+  }
+  return createElement(REASON_ICONS[item.reason] ?? Bell, ICON_PROPS);
+}
+
 type NotificationRowProps = {
   item: NotificationItem;
   unread: boolean;
@@ -33,8 +54,6 @@ type NotificationRowProps = {
 };
 
 export function NotificationRow({ item, unread, onOpen, onDismiss }: NotificationRowProps) {
-  const Icon = REASON_ICONS[item.reason] ?? Bell;
-
   return (
     <li
       className="group flex items-start gap-2.5 transition-colors hover:bg-[var(--color-bg-muted)]"
@@ -61,12 +80,7 @@ export function NotificationRow({ item, unread, onOpen, onDismiss }: Notificatio
             background: unread ? "var(--color-primary)" : "transparent",
           }}
         />
-        <Icon
+        <ItemIcon item={item} />
-          size={15}
-          aria-hidden
-          className="shrink-0"
-          style={{ color: "var(--color-text-muted)", marginTop: 2 }}
-        />
         <Text
           as="span"
           variant="description"

src/components/notifications/use-notification-center.ts

@@ -8,9 +8,11 @@ import {
   isDismissable,
   visibleNotificationSections,
 } from "@/domain/notifications/utils/visible-notification-sections";
+import { useAuthContext } from "@/providers/auth-context";
 
 export function useNotificationCenter(onNavigate?: () => void) {
   const navigate = useNavigate();
+  const { user } = useAuthContext();
   const feed = useNotificationFeed();
   const { dismissedIds, readIds, dismiss, markRead } = useNotificationSession();
 
@@ -26,7 +28,7 @@ export function useNotificationCenter(onNavigate?: () => void) {
 
   const open = (item: NotificationItem) => {
     markRead([item.id]);
-    const url = notificationTargetUrl(item.target);
+    const url = notificationTargetUrl(item, user?.id);
     if (url == null) return;
     onNavigate?.();
     navigate(url);

src/domain/notifications/utils/notification-target-url.ts

@@ -2,7 +2,7 @@ import {
   OPEN_WIZARD_STATUSES,
   workOrderDrilldownUrl,
 } from "@/domain/dashboard/utils/work-order-drilldown-links";
-import type { NotificationTarget } from "@/domain/notifications/types/notification-feed";
+import type { NotificationItem } from "@/domain/notifications/types/notification-feed";
 import { ASSIGNEE_FILTER_UNASSIGNED } from "@/domain/work-orders/types/work-order-list";
 import {
   UNASSIGNED_QUEUE_DATE_FROM,
@@ -10,22 +10,44 @@ import {
 } from "@/domain/work-orders/utils/board-query-params";
 import { workOrderDeepLinkUrl } from "@/domain/work-orders/utils/work-order-deep-link";
 
-/** Every open, unassigned work order in any week, through the existing Work Orders filter params. */
+const COMMENT_REASONS = new Set(["mentions", "activity"]);
-export function unassignedQueueUrl(): string {
+
+/** Every open work order held by `dispatcher`, in any week, through the Work Orders filter params. */
+function openQueueUrl(dispatcher: string): string {
   const search = new URLSearchParams();
   search.set("dateFrom", UNASSIGNED_QUEUE_DATE_FROM);
   search.set("dateTo", UNASSIGNED_QUEUE_DATE_TO);
-  search.set("dispatchers", ASSIGNEE_FILTER_UNASSIGNED);
+  search.set("dispatchers", dispatcher);
   search.set("statuses", OPEN_WIZARD_STATUSES.join(","));
   return workOrderDrilldownUrl(search);
 }
 
-export function notificationTargetUrl(target: NotificationTarget): string | null {
+export function unassignedQueueUrl(): string {
+  return openQueueUrl(ASSIGNEE_FILTER_UNASSIGNED);
+}
+
+/**
+ * Where a feed item leads. Queues open the Work Orders board filtered; work-order items open the
+ * slide-over on their tab, and comment or mention items also carry which comments to highlight.
+ */
+export function notificationTargetUrl(
+  item: Pick<NotificationItem, "reason" | "triggeredAt" | "target">,
+  currentUserId?: string | number | null,
+): string | null {
+  const { target } = item;
   if (target.kind === "queue") {
-    return target.queue === "unassigned" ? unassignedQueueUrl() : null;
+    if (target.queue === "unassigned") return unassignedQueueUrl();
+    if (target.queue === "assigned-to-me" && currentUserId != null && currentUserId !== "") {
+      return openQueueUrl(String(currentUserId));
+    }
+    return null;
   }
   if (target.workOrderId == null) {
     return null;
   }
-  return workOrderDeepLinkUrl(target.workOrderId, target.tab);
+  const highlight =
+    target.tab === "comments" && COMMENT_REASONS.has(item.reason)
+      ? { since: item.triggeredAt, mentions: item.reason === "mentions" }
+      : null;
+  return workOrderDeepLinkUrl(target.workOrderId, target.tab, highlight);
 }

src/domain/work-orders/utils/comment-highlight.ts

@@ -0,0 +1,39 @@
+import type { WorkOrderComment } from "@/domain/work-orders/types/work-order-detail";
+import { isOwnWorkOrderComment } from "@/domain/work-orders/utils/comment-ownership";
+import { extractMentionIds } from "@/domain/work-orders/utils/comment-mentions";
+import type { CommentHighlight } from "@/domain/work-orders/utils/work-order-deep-link";
+
+/**
+ * Ids of the comments a notification was raised for. The feed starts a comment item at its first
+ * unanswered comment and a mention item at the mentioning comment, so this is every comment by
+ * someone else from that moment on, split the same way the feed splits them: comments that
+ * mention the user belong to Mentions, the rest to Recent activity.
+ */
+// Board comment times arrive as UTC without a zone designator; read them as UTC, not local time.
+function parseUtc(value: string): number {
+  return Date.parse(/(Z|[+-]\d{2}:?\d{2})$/i.test(value) ? value : `${value}Z`);
+}
+
+export function highlightedCommentIds(
+  comments: WorkOrderComment[],
+  highlight: CommentHighlight | null | undefined,
+  currentUserId: string | number | null | undefined,
+): Set<string> {
+  const ids = new Set<string>();
+  const since = highlight == null ? Number.NaN : parseUtc(highlight.since);
+  if (highlight == null || Number.isNaN(since) || currentUserId == null || currentUserId === "") {
+    return ids;
+  }
+  const userId = String(currentUserId);
+  for (const comment of comments) {
+    const createdAt = parseUtc(comment.createdDate);
+    if (Number.isNaN(createdAt) || createdAt < since || isOwnWorkOrderComment(comment, userId)) {
+      continue;
+    }
+    const mentionsUser = extractMentionIds(comment.commenttext ?? "").includes(userId);
+    if (mentionsUser === highlight.mentions) {
+      ids.add(String(comment.id));
+    }
+  }
+  return ids;
+}

src/domain/work-orders/utils/work-order-deep-link.ts

@@ -2,6 +2,10 @@ import { WORK_ORDERS_ROUTE } from "@/domain/dashboard/utils/work-order-drilldown
 
 const WORK_ORDER_PARAM = "wo";
 const TAB_PARAM = "tab";
+const SINCE_PARAM = "since";
+const FOCUS_PARAM = "focus";
+const MENTIONS_FOCUS = "mentions";
+const COMMENTS_FOCUS = "comments";
 
 export const WORK_ORDER_DEEP_LINK_TABS = [
   "info",
@@ -9,40 +13,80 @@ export const WORK_ORDER_DEEP_LINK_TABS = [
   "audit",
   "completion",
   "extras",
+  "uplifts",
 ] as const;
 
 export type WorkOrderDeepLinkTab = (typeof WORK_ORDER_DEEP_LINK_TABS)[number];
 
+/**
+ * The comments a notification was raised for: everything by someone else from `since` on,
+ * either the ones that mention the user or the ones that do not.
+ */
+export type CommentHighlight = {
+  since: string;
+  mentions: boolean;
+};
+
 export type WorkOrderDeepLink = {
   workOrderId: string;
   tab: WorkOrderDeepLinkTab;
+  highlight: CommentHighlight | null;
 };
 
 function isDeepLinkTab(value: string | null): value is WorkOrderDeepLinkTab {
   return WORK_ORDER_DEEP_LINK_TABS.some((tab) => tab === value);
 }
 
-/** `/workorders?wo=<id>&tab=<tab>` opens that work order's slide-over on the given tab. */
+/**
-export function workOrderDeepLinkUrl(workOrderId: string | number, tab?: string | null): string {
+ * `/workorders?wo=<id>&tab=<tab>` opens that work order's slide-over on the given tab; `uplifts`
+ * opens its uplifts dialog. A Comments link can also carry the comments to highlight.
+ */
+export function workOrderDeepLinkUrl(
+  workOrderId: string | number,
+  tab?: string | null,
+  highlight?: CommentHighlight | null,
+): string {
   const search = new URLSearchParams({ [WORK_ORDER_PARAM]: String(workOrderId) });
   if (isDeepLinkTab(tab ?? null)) {
     search.set(TAB_PARAM, String(tab));
   }
+  if (tab === "comments" && highlight != null) {
+    search.set(SINCE_PARAM, highlight.since);
+    search.set(FOCUS_PARAM, highlight.mentions ? MENTIONS_FOCUS : COMMENTS_FOCUS);
+  }
   return `${WORK_ORDERS_ROUTE}?${search.toString()}`;
 }
 
+function parseHighlight(
+  params: URLSearchParams,
+  tab: WorkOrderDeepLinkTab,
+): CommentHighlight | null {
+  const since = params.get(SINCE_PARAM) ?? "";
+  const focus = params.get(FOCUS_PARAM);
+  if (tab !== "comments" || Number.isNaN(Date.parse(since))) {
+    return null;
+  }
+  if (focus !== MENTIONS_FOCUS && focus !== COMMENTS_FOCUS) {
+    return null;
+  }
+  return { since, mentions: focus === MENTIONS_FOCUS };
+}
+
 export function parseWorkOrderDeepLink(params: URLSearchParams): WorkOrderDeepLink | null {
   const workOrderId = (params.get(WORK_ORDER_PARAM) ?? "").trim();
   if (!/^\d+$/.test(workOrderId)) {
     return null;
   }
-  const tab = params.get(TAB_PARAM);
+  const requested = params.get(TAB_PARAM);
-  return { workOrderId, tab: isDeepLinkTab(tab) ? tab : "info" };
+  const tab = isDeepLinkTab(requested) ? requested : "info";
+  return { workOrderId, tab, highlight: parseHighlight(params, tab) };
 }
 
 export function withoutWorkOrderDeepLink(params: URLSearchParams): URLSearchParams {
   const next = new URLSearchParams(params);
   next.delete(WORK_ORDER_PARAM);
   next.delete(TAB_PARAM);
+  next.delete(SINCE_PARAM);
+  next.delete(FOCUS_PARAM);
   return next;
 }

src/test/app/(protected)/workorders/slide-over-comment-highlight.test.tsx

@@ -0,0 +1,95 @@
+import { screen } from "@testing-library/react";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { SlideOverCommentsTab } from "@/app/(protected)/workorders/_components/detail/tabs/slide-over-comments-tab";
+import type { WorkOrderComment } from "@/domain/work-orders/types/work-order-detail";
+import type { CommentHighlight } from "@/domain/work-orders/utils/work-order-deep-link";
+import { renderWithProviders } from "@/test/test-utils";
+
+const ME = "dispatcher-me";
+
+function comment(
+  id: number,
+  authorId: string,
+  createdDate: string,
+  text: string,
+): WorkOrderComment {
+  return {
+    id,
+    createdDate,
+    commenttext: text,
+    commentType: "General",
+    userName: authorId === ME ? "Me Myself" : "Omar Diaz",
+    authorId,
+    commenter: null,
+    recordType: "WorkOrder",
+  };
+}
+
+// Board comment times arrive without a zone designator and are UTC.
+const thread = [
+  comment(1, "omar", "2026-09-18T08:00:00", "Earlier note, already seen"),
+  comment(2, "omar", "2026-09-18T09:30:00", "Vendor is running late"),
+  comment(3, ME, "2026-09-18T09:40:00", "My own comment"),
+  comment(4, "omar", "2026-09-18T10:00:00", "Can you check this @[dispatcher-me:Me Myself]"),
+  comment(5, "omar", "2026-09-18T10:05:00", "Arrived on site"),
+];
+
+function renderTab(highlight: CommentHighlight | null) {
+  renderWithProviders(
+    <SlideOverCommentsTab
+      comments={thread}
+      isReadOnly={false}
+      isPending={false}
+      currentUserId={ME}
+      highlight={highlight}
+      onSubmit={vi.fn()}
+    />,
+    { withAuth: false },
+  );
+}
+
+function highlightedTexts(): string[] {
+  return Array.from(document.querySelectorAll('[data-highlighted="true"]')).map(
+    (row) => row.querySelector("p")?.textContent ?? "",
+  );
+}
+
+describe("comments opened from a notification", () => {
+  const originalScroll = Element.prototype.scrollIntoView;
+
+  afterEach(() => {
+    Element.prototype.scrollIntoView = originalScroll;
+  });
+
+  it("highlights the new comments by others that a comment notification covers", () => {
+    const scroll = vi.fn();
+    Element.prototype.scrollIntoView = scroll;
+
+    renderTab({ since: "2026-09-18T09:30:00Z", mentions: false });
+
+    expect(highlightedTexts()).toEqual(["Vendor is running late", "Arrived on site"]);
+    expect(screen.getAllByText("New for you:", { exact: false })).toHaveLength(2);
+    expect(scroll).toHaveBeenCalledTimes(1);
+    expect(scroll).toHaveBeenCalledWith({ block: "nearest" });
+  });
+
+  it("highlights only the mentioning comment for a mention notification", () => {
+    renderTab({ since: "2026-09-18T10:00:00Z", mentions: true });
+
+    expect(highlightedTexts()).toEqual(["Can you check this @[dispatcher-me:Me Myself]"]);
+  });
+
+  it("never highlights the user's own comments", () => {
+    renderTab({ since: "2026-09-18T00:00:00Z", mentions: false });
+
+    expect(highlightedTexts()).not.toContain("My own comment");
+    expect(highlightedTexts()).toHaveLength(3);
+  });
+
+  it("highlights nothing when the tab was opened without a notification", () => {
+    renderTab(null);
+
+    expect(highlightedTexts()).toEqual([]);
+    expect(screen.queryByText("New for you:", { exact: false })).not.toBeInTheDocument();
+  });
+});

src/test/app/(protected)/workorders/use-work-order-deep-link.test.tsx

@@ -32,53 +32,87 @@ describe("work order deep link", () => {
     detailState.requestedIds = [];
   });
 
-  it("opens the linked work order on the requested tab and clears the link", async () => {
+  function handlers() {
-    const onOpen = vi.fn();
+    return { onOpenSlideOver: vi.fn(), onOpenUplifts: vi.fn() };
-    const { result } = renderHook(
+  }
+
+  function renderLink(route: string, open: ReturnType<typeof handlers>) {
+    return renderHook(
       () => {
-        useWorkOrderDeepLink(onOpen);
+        useWorkOrderDeepLink(open);
         return useLocation();
       },
-      { wrapper: wrapper("/workorders?wo=42&tab=extras") },
+      { wrapper: wrapper(route) },
     );
+  }
+
+  it("opens the linked work order on the requested tab and clears the link", async () => {
+    const open = handlers();
+    const { result } = renderLink("/workorders?wo=42&tab=extras", open);
 
     await waitFor(() => expect(result.current.search).toBe(""));
     expect(detailState.requestedIds).toContain("42");
-    expect(onOpen).toHaveBeenCalledTimes(1);
+    expect(open.onOpenSlideOver).toHaveBeenCalledTimes(1);
-    expect(onOpen).toHaveBeenCalledWith({ id: 42, woNumber: "1042" }, false, "extras");
+    expect(open.onOpenSlideOver).toHaveBeenCalledWith(
+      { id: 42, woNumber: "1042" },
+      false,
+      "extras",
+      null,
+    );
+    expect(open.onOpenUplifts).not.toHaveBeenCalled();
   });
 
   it("falls back to the info tab for an unknown tab", async () => {
-    const onOpen = vi.fn();
+    const open = handlers();
-    renderHook(() => useWorkOrderDeepLink(onOpen), {
+    renderLink("/workorders?wo=42&tab=nope", open);
-      wrapper: wrapper("/workorders?wo=42&tab=nope"),
-    });
 
-    await waitFor(() => expect(onOpen).toHaveBeenCalledWith(expect.anything(), false, "info"));
+    await waitFor(() =>
+      expect(open.onOpenSlideOver).toHaveBeenCalledWith(expect.anything(), false, "info", null),
+    );
+  });
+
+  it("opens the Comments tab with the comments a notification points at", async () => {
+    const open = handlers();
+    const { result } = renderLink(
+      "/workorders?wo=42&tab=comments&since=2026-09-18T09%3A30%3A00Z&focus=mentions",
+      open,
+    );
+
+    await waitFor(() => expect(result.current.search).toBe(""));
+    expect(open.onOpenSlideOver).toHaveBeenCalledTimes(1);
+    expect(open.onOpenSlideOver).toHaveBeenCalledWith(expect.anything(), false, "comments", {
+      since: "2026-09-18T09:30:00Z",
+      mentions: true,
+    });
+  });
+
+  it("opens the uplifts dialog for an uplifts link instead of the slide-over", async () => {
+    const open = handlers();
+    const { result } = renderLink("/workorders?wo=42&tab=uplifts", open);
+
+    await waitFor(() => expect(result.current.search).toBe(""));
+    expect(open.onOpenUplifts).toHaveBeenCalledTimes(1);
+    expect(open.onOpenUplifts).toHaveBeenCalledWith({ id: 42, woNumber: "1042" });
+    expect(open.onOpenSlideOver).not.toHaveBeenCalled();
   });
 
   it("clears the link without opening anything when the work order cannot load", async () => {
     detailState.data = undefined;
     detailState.error = new Error("not found");
-    const onOpen = vi.fn();
+    const open = handlers();
-    const { result } = renderHook(
+    const { result } = renderLink("/workorders?wo=42", open);
-      () => {
-        useWorkOrderDeepLink(onOpen);
-        return useLocation();
-      },
-      { wrapper: wrapper("/workorders?wo=42") },
-    );
 
     await waitFor(() => expect(result.current.search).toBe(""));
-    expect(onOpen).not.toHaveBeenCalled();
+    expect(open.onOpenSlideOver).not.toHaveBeenCalled();
+    expect(open.onOpenUplifts).not.toHaveBeenCalled();
   });
 
   it("ignores a board URL without a work order link", () => {
-    const onOpen = vi.fn();
+    const open = handlers();
-    renderHook(() => useWorkOrderDeepLink(onOpen), { wrapper: wrapper("/workorders?tab=extras") });
+    renderHook(() => useWorkOrderDeepLink(open), { wrapper: wrapper("/workorders?tab=extras") });
 
     expect(detailState.requestedIds.every((id) => id == null)).toBe(true);
-    expect(onOpen).not.toHaveBeenCalled();
+    expect(open.onOpenSlideOver).not.toHaveBeenCalled();
   });
 });
 

src/test/components/notifications/notification-center.test.tsx

@@ -12,6 +12,11 @@ const apiGet = vi.hoisted(() => vi.fn());
 
 vi.mock("@/api/api", () => ({ apiGet }));
 
+vi.mock("@/providers/auth-context", async (importOriginal) => ({
+  ...(await importOriginal<typeof import("@/providers/auth-context")>()),
+  useAuthContext: () => ({ user: { id: "dispatcher-me" } }),
+}));
+
 type ItemInput = {
   id: string;
   reason: string;

src/test/components/notifications/notification-event-items.test.tsx

@@ -0,0 +1,183 @@
+import { screen, waitFor, within } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { useLocation } from "react-router";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import { NotificationBell } from "@/components/notifications/notification-bell";
+import { NotificationSessionProvider } from "@/domain/notifications/session/notification-session-provider";
+import { renderWithProviders } from "@/test/test-utils";
+
+const apiGet = vi.hoisted(() => vi.fn());
+
+vi.mock("@/api/api", () => ({ apiGet }));
+
+vi.mock("@/providers/auth-context", async (importOriginal) => ({
+  ...(await importOriginal<typeof import("@/providers/auth-context")>()),
+  useAuthContext: () => ({ user: { id: "dispatcher-me" } }),
+}));
+
+type Target = { kind: "workOrder" | "queue"; workOrderId?: number; tab?: string; queue?: string };
+
+function item(
+  id: string,
+  reason: string,
+  severity: string,
+  title: string,
+  target: Target,
+  extra = {},
+) {
+  return {
+    id,
+    reason,
+    severity,
+    rowType: "dismissable",
+    title,
+    count: 1,
+    triggeredAt: "2026-09-18T12:00:00Z",
+    target,
+    workOrders: [],
+    ...extra,
+  };
+}
+
+const mention = item("mention-501", "mentions", "High", "Omar Diaz mentioned you on WO #1011", {
+  kind: "workOrder",
+  workOrderId: 11,
+  tab: "comments",
+});
+
+const comments = item(
+  "comments-12-505",
+  "activity",
+  "Medium",
+  "2 new comments on WO #1012",
+  { kind: "workOrder", workOrderId: 12, tab: "comments" },
+  { triggeredAt: "2026-09-18T09:30:00Z" },
+);
+
+const assignedGroup = item(
+  "new-assigned-group-30",
+  "activity",
+  "Low",
+  "3 new work orders assigned to you",
+  { kind: "queue", queue: "assigned-to-me" },
+  { count: 3 },
+);
+
+const assignedOne = item("new-assigned-40", "activity", "Low", "WO #1040 was assigned to you", {
+  kind: "workOrder",
+  workOrderId: 40,
+  tab: "info",
+});
+
+const upliftRejected = item(
+  "uplift-rejected-9",
+  "activity",
+  "High",
+  "Your $400.00 uplift on WO #1020 was rejected: “Quote does not match”",
+  { kind: "workOrder", workOrderId: 20, tab: "uplifts" },
+);
+
+const feed = {
+  generatedAt: "2026-09-18T16:00:00Z",
+  sections: [
+    { reason: "mentions", label: "Mentions", severity: "High", count: 1, items: [mention] },
+    {
+      reason: "activity",
+      label: "Recent activity",
+      severity: "High",
+      count: 6,
+      items: [upliftRejected, comments, assignedOne, assignedGroup],
+    },
+  ],
+};
+
+function LocationProbe() {
+  const location = useLocation();
+  return <output aria-label="Current location">{`${location.pathname}${location.search}`}</output>;
+}
+
+async function openItem(title: RegExp) {
+  const user = userEvent.setup();
+  renderWithProviders(
+    <NotificationSessionProvider>
+      <NotificationBell />
+      <LocationProbe />
+    </NotificationSessionProvider>,
+    { withAuth: false },
+  );
+  await user.click(await screen.findByRole("button", { name: /^Notifications, \d+ unread$/ }));
+  const panel = await screen.findByRole("dialog");
+  await user.click(within(panel).getByRole("button", { name: title }));
+  await waitFor(() => expect(screen.queryByRole("dialog")).not.toBeInTheDocument());
+  const location = screen.getByRole("status", { name: "Current location" }).textContent ?? "";
+  return new URL(location, "http://localhost");
+}
+
+describe("event notifications in the Notification Center", () => {
+  beforeEach(() => {
+    apiGet.mockReset();
+    apiGet.mockResolvedValue(feed);
+  });
+
+  it("lists mentions, comments, assignments and uplift decisions in their sections", async () => {
+    const user = userEvent.setup();
+    renderWithProviders(
+      <NotificationSessionProvider>
+        <NotificationBell />
+      </NotificationSessionProvider>,
+      { withAuth: false },
+    );
+
+    await user.click(await screen.findByRole("button", { name: "Notifications, 5 unread" }));
+    const panel = await screen.findByRole("dialog");
+    const mentions = within(panel).getByRole("region", { name: "Mentions, 1" });
+    expect(within(mentions).getByText(mention.title)).toBeInTheDocument();
+    const activity = within(panel).getByRole("region", { name: "Recent activity, 6" });
+    for (const row of [upliftRejected, comments, assignedOne, assignedGroup]) {
+      expect(within(activity).getByText(row.title)).toBeInTheDocument();
+    }
+  });
+
+  it("opens a comment item on the Comments tab with the comments to highlight", async () => {
+    const url = await openItem(/2 new comments on WO #1012/);
+
+    expect(url.pathname).toBe("/workorders");
+    expect(url.searchParams.get("wo")).toBe("12");
+    expect(url.searchParams.get("tab")).toBe("comments");
+    expect(url.searchParams.get("since")).toBe("2026-09-18T09:30:00Z");
+    expect(url.searchParams.get("focus")).toBe("comments");
+  });
+
+  it("opens a mention on the Comments tab focused on the mentioning comment", async () => {
+    const url = await openItem(/Omar Diaz mentioned you on WO #1011/);
+
+    expect(url.searchParams.get("wo")).toBe("11");
+    expect(url.searchParams.get("tab")).toBe("comments");
+    expect(url.searchParams.get("since")).toBe("2026-09-18T12:00:00Z");
+    expect(url.searchParams.get("focus")).toBe("mentions");
+  });
+
+  it("opens a grouped assignment as the signed-in dispatcher's open queue", async () => {
+    const url = await openItem(/3 new work orders assigned to you/);
+
+    expect(url.pathname).toBe("/workorders");
+    expect(url.searchParams.get("dispatchers")).toBe("dispatcher-me");
+    expect(url.searchParams.get("dateFrom")).toBe("1970-01-01");
+    expect(url.searchParams.get("dateTo")).toBe("2099-12-31");
+    expect(url.searchParams.get("statuses")).toBeTruthy();
+    expect(url.searchParams.get("wo")).toBeNull();
+  });
+
+  it("opens a single assignment straight on the work order, with no highlight", async () => {
+    const url = await openItem(/WO #1040 was assigned to you/);
+
+    expect(`${url.pathname}${url.search}`).toBe("/workorders?wo=40&tab=info");
+  });
+
+  it("opens an uplift decision on the work order's uplifts", async () => {
+    const url = await openItem(/uplift on WO #1020 was rejected/);
+
+    expect(`${url.pathname}${url.search}`).toBe("/workorders?wo=20&tab=uplifts");
+  });
+});