diff --git a/apps/web/src/components/activities/RelatedActivitiesPanel.vue b/apps/web/src/components/activities/RelatedActivitiesPanel.vue
new file mode 100644
index 0000000..6f39329
--- /dev/null
+++ b/apps/web/src/components/activities/RelatedActivitiesPanel.vue
@@ -0,0 +1,393 @@
+<script setup lang="ts">
+import { computed, ref, watch } from 'vue';
+import { useRouter } from 'vue-router';
+import {
+  Alert as AAlert,
+  Avatar as AAvatar,
+  Button as AButton,
+  Card as ACard,
+  Collapse as ACollapse,
+  CollapsePanel as ACollapsePanel,
+  Divider as ADivider,
+  Empty as AEmpty,
+  Flex as AFlex,
+  Space as ASpace,
+  Spin as ASpin,
+  Tag as ATag,
+  Typography,
+  theme,
+} from 'ant-design-vue';
+import {
+  CalendarOutlined,
+  CheckCircleOutlined,
+  ClockCircleOutlined,
+  LeftOutlined,
+  PhoneOutlined,
+  PlusOutlined,
+  ScheduleOutlined,
+  TeamOutlined,
+  WarningOutlined,
+} from '@ant-design/icons-vue';
+import type { ActivityDto, ActivityStatus, ActivityType, PaginatedResponse } from '@mento/shared';
+import { ACTIVITY_TYPE_LABELS } from '@mento/shared';
+import { api } from '@/lib/api';
+import {
+  calendarDaysBetween,
+  formatClockFa,
+  formatJalaliDay,
+  startOfLocalDay,
+  toFaDigits,
+} from '@/lib/jalali';
+
+const { Text: ATypographyText, Title: ATypographyTitle, Paragraph: ATypographyParagraph } =
+  Typography;
+const { token } = theme.useToken();
+
+const STATUS_LABELS: Record<ActivityStatus, string> = {
+  open: 'باز',
+  done: 'انجام‌شده',
+  canceled: 'لغو شده',
+};
+
+const TYPE_ICONS: Record<ActivityType, typeof PhoneOutlined> = {
+  call: PhoneOutlined,
+  meeting: TeamOutlined,
+  task: CheckCircleOutlined,
+  note: ScheduleOutlined,
+};
+
+type DueTone = 'overdue' | 'today' | 'soon' | 'later' | 'none';
+
+const props = withDefaults(
+  defineProps<{
+    dealId: string;
+    personId?: string | null;
+    companyId?: string | null;
+    dealTitle?: string;
+  }>(),
+  {
+    personId: null,
+    companyId: null,
+    dealTitle: '',
+  },
+);
+
+const router = useRouter();
+
+const items = ref<ActivityDto[]>([]);
+const loading = ref(false);
+const error = ref('');
+const closedKeys = ref<string[]>([]);
+
+function sortByDue(a: ActivityDto, b: ActivityDto) {
+  const ta = a.dueAt ? new Date(a.dueAt).getTime() : Number.POSITIVE_INFINITY;
+  const tb = b.dueAt ? new Date(b.dueAt).getTime() : Number.POSITIVE_INFINITY;
+  if (Number.isNaN(ta) && Number.isNaN(tb)) return 0;
+  if (Number.isNaN(ta)) return 1;
+  if (Number.isNaN(tb)) return -1;
+  return ta - tb;
+}
+
+const planned = computed(() =>
+  items.value.filter((a) => a.status === 'open').slice().sort(sortByDue),
+);
+const closed = computed(() =>
+  items.value
+    .filter((a) => a.status !== 'open')
+    .slice()
+    .sort((a, b) => {
+      const ta = a.completedAt || a.updatedAt || a.dueAt || '';
+      const tb = b.completedAt || b.updatedAt || b.dueAt || '';
+      return tb.localeCompare(ta);
+    }),
+);
+
+function dueTone(dueAt: string | null): DueTone {
+  if (!dueAt) return 'none';
+  const due = new Date(dueAt);
+  if (Number.isNaN(due.getTime())) return 'none';
+  const days = calendarDaysBetween(startOfLocalDay(), startOfLocalDay(due));
+  if (days < 0) return 'overdue';
+  if (days === 0) return 'today';
+  if (days <= 2) return 'soon';
+  return 'later';
+}
+
+function dueLabel(dueAt: string | null) {
+  if (!dueAt) return 'بدون موعد';
+  const d = new Date(dueAt);
+  if (Number.isNaN(d.getTime())) return 'بدون موعد';
+  const tone = dueTone(dueAt);
+  if (tone === 'overdue') {
+    const days = Math.abs(calendarDaysBetween(startOfLocalDay(), startOfLocalDay(d)));
+    return days === 1 ? 'دیروز موعد داشت' : `${toFaDigits(days)} روز تأخیر`;
+  }
+  if (tone === 'today') return `امروز · ${formatClockFa(d)}`;
+  return `${formatJalaliDay(d)} · ${formatClockFa(d)}`;
+}
+
+function dueTagColor(tone: DueTone) {
+  if (tone === 'overdue') return 'error';
+  if (tone === 'today') return 'warning';
+  if (tone === 'soon') return 'processing';
+  return 'default';
+}
+
+function rowStyle(tone: DueTone, closedRow = false) {
+  const base = {
+    width: '100%',
+    padding: `${token.value.paddingSM}px ${token.value.padding}px`,
+    borderRadius: `${token.value.borderRadiusLG}px`,
+    border: `1px solid ${token.value.colorBorderSecondary}`,
+    background: token.value.colorBgContainer,
+    cursor: 'pointer' as const,
+    opacity: closedRow ? 0.78 : 1,
+  };
+  if (closedRow) {
+    return { ...base, background: token.value.colorFillAlter };
+  }
+  if (tone === 'overdue') {
+    return {
+      ...base,
+      borderColor: token.value.colorErrorBorder,
+      background: token.value.colorErrorBg,
+    };
+  }
+  if (tone === 'today') {
+    return {
+      ...base,
+      borderColor: token.value.colorWarningBorder,
+      background: token.value.colorWarningBg,
+    };
+  }
+  return base;
+}
+
+function avatarStyle(tone: DueTone) {
+  if (tone === 'overdue') {
+    return { backgroundColor: token.value.colorErrorBg, color: token.value.colorError };
+  }
+  if (tone === 'today') {
+    return { backgroundColor: token.value.colorWarningBg, color: token.value.colorWarning };
+  }
+  return {
+    backgroundColor: token.value.colorPrimaryBg,
+    color: token.value.colorPrimary,
+  };
+}
+
+function typeLabel(item: ActivityDto) {
+  const type = item.type as ActivityType;
+  return item.typeDef?.name || ACTIVITY_TYPE_LABELS[type];
+}
+
+function statusLabel(status: ActivityDto['status']) {
+  return STATUS_LABELS[status as ActivityStatus];
+}
+
+function typeIcon(type: ActivityDto['type']) {
+  return TYPE_ICONS[type as ActivityType];
+}
+
+function newActivityQuery() {
+  const query: Record<string, string> = { dealId: props.dealId };
+  if (props.personId) query.personId = props.personId;
+  if (props.companyId) query.companyId = props.companyId;
+  if (props.dealTitle.trim()) query.title = `پیگیری: ${props.dealTitle.trim()}`;
+  return query;
+}
+
+function goCreate() {
+  void router.push({ name: 'activity-new', query: newActivityQuery() });
+}
+
+function goDetail(id: string) {
+  void router.push({ name: 'activity-detail', params: { id } });
+}
+
+async function load() {
+  if (!props.dealId) return;
+  loading.value = true;
+  error.value = '';
+  try {
+    const { data } = await api.get<PaginatedResponse<ActivityDto>>('/activities', {
+      params: { filter: 'all', dealId: props.dealId, limit: 50 },
+    });
+    items.value = data.items ?? [];
+  } catch {
+    error.value = 'بارگذاری فعالیت‌های معامله ممکن نشد.';
+    items.value = [];
+  } finally {
+    loading.value = false;
+  }
+}
+
+watch(
+  () => props.dealId,
+  () => {
+    void load();
+  },
+  { immediate: true },
+);
+</script>
+
+<template>
+  <a-card :bordered="false">
+    <template #title>
+      <a-space :size="8">
+        <CalendarOutlined :style="{ color: token.colorPrimary }" />
+        <span>فعالیت‌های برنامه‌ریزی‌شده</span>
+        <a-tag v-if="planned.length" color="processing" :bordered="false">
+          {{ toFaDigits(planned.length) }} باز
+        </a-tag>
+      </a-space>
+    </template>
+    <template #extra>
+      <a-button type="primary" @click="goCreate">
+        <template #icon><PlusOutlined /></template>
+        افزودن فعالیت
+      </a-button>
+    </template>
+
+    <a-alert
+      v-if="error"
+      type="error"
+      show-icon
+      :message="error"
+      :style="{ marginBottom: `${token.margin}px` }"
+    />
+
+    <a-spin :spinning="loading">
+      <a-empty
+        v-if="!loading && !planned.length"
+        :image="AEmpty.PRESENTED_IMAGE_SIMPLE"
+        :style="{ paddingBlock: `${token.paddingLG}px` }"
+      >
+        <template #description>
+          <a-flex vertical align="center" :gap="token.marginXS">
+            <a-typography-title :level="5" :style="{ margin: 0 }">
+              هنوز فعالیتی برای این معامله نیست
+            </a-typography-title>
+            <a-typography-paragraph
+              type="secondary"
+              :style="{ margin: 0, maxWidth: '28rem', textAlign: 'center' }"
+            >
+              یک تماس، جلسه یا پیگیری زمان‌بندی کن تا معامله از دست نرود.
+            </a-typography-paragraph>
+          </a-flex>
+        </template>
+        <a-button type="primary" @click="goCreate">
+          <template #icon><PlusOutlined /></template>
+          افزودن اولین فعالیت
+        </a-button>
+      </a-empty>
+
+      <a-flex v-else-if="planned.length" vertical :gap="token.marginSM">
+        <a-flex
+          v-for="item in planned"
+          :key="item.id"
+          align="center"
+          justify="space-between"
+          :gap="token.marginSM"
+          wrap="wrap"
+          :style="rowStyle(dueTone(item.dueAt))"
+          role="button"
+          tabindex="0"
+          @click="goDetail(item.id)"
+          @keydown.enter="goDetail(item.id)"
+        >
+          <a-flex align="center" :gap="token.marginSM" :style="{ minWidth: 0, flex: '1 1 220px' }">
+            <a-avatar :size="40" :style="avatarStyle(dueTone(item.dueAt))">
+              <template #icon>
+                <WarningOutlined v-if="dueTone(item.dueAt) === 'overdue'" />
+                <ClockCircleOutlined v-else-if="dueTone(item.dueAt) === 'today'" />
+                <component :is="typeIcon(item.type)" v-else />
+              </template>
+            </a-avatar>
+            <a-flex vertical :gap="4" :style="{ minWidth: 0 }">
+              <a-typography-text strong :ellipsis="{ tooltip: item.title }">
+                {{ item.title }}
+              </a-typography-text>
+              <a-space :size="8" wrap>
+                <a-tag :bordered="false">{{ typeLabel(item) }}</a-tag>
+                <a-tag :color="dueTagColor(dueTone(item.dueAt))" :bordered="false">
+                  {{ dueLabel(item.dueAt) }}
+                </a-tag>
+                <a-typography-text v-if="item.assignee?.fullName" type="secondary">
+                  {{ item.assignee.fullName }}
+                </a-typography-text>
+              </a-space>
+            </a-flex>
+          </a-flex>
+          <LeftOutlined :style="{ color: token.colorTextQuaternary, flexShrink: 0 }" />
+        </a-flex>
+      </a-flex>
+
+      <template v-if="closed.length">
+        <a-divider v-if="planned.length" :style="{ margin: `${token.marginMD}px 0` }" />
+        <a-collapse
+          v-model:activeKey="closedKeys"
+          ghost
+          :bordered="false"
+          :style="{
+            background: 'transparent',
+            marginTop: planned.length ? 0 : `${token.marginSM}px`,
+          }"
+        >
+          <a-collapse-panel key="closed">
+            <template #header>
+              <a-typography-text type="secondary">
+                {{ toFaDigits(closed.length) }} فعالیت انجام‌شده یا لغو شده
+              </a-typography-text>
+            </template>
+            <a-flex vertical :gap="token.marginSM">
+              <a-flex
+                v-for="item in closed"
+                :key="item.id"
+                align="center"
+                justify="space-between"
+                :gap="token.marginSM"
+                wrap="wrap"
+                :style="rowStyle('none', true)"
+                role="button"
+                tabindex="0"
+                @click="goDetail(item.id)"
+                @keydown.enter="goDetail(item.id)"
+              >
+                <a-flex
+                  align="center"
+                  :gap="token.marginSM"
+                  :style="{ minWidth: 0, flex: '1 1 220px' }"
+                >
+                  <a-avatar
+                    :size="40"
+                    :style="{
+                      backgroundColor: token.colorFillSecondary,
+                      color: token.colorTextSecondary,
+                    }"
+                  >
+                    <template #icon>
+                      <component :is="typeIcon(item.type)" />
+                    </template>
+                  </a-avatar>
+                  <a-flex vertical :gap="4" :style="{ minWidth: 0 }">
+                    <a-typography-text :ellipsis="{ tooltip: item.title }">
+                      {{ item.title }}
+                    </a-typography-text>
+                    <a-space :size="8" wrap>
+                      <a-tag :bordered="false">{{ statusLabel(item.status) }}</a-tag>
+                      <a-typography-text type="secondary">
+                        {{ dueLabel(item.dueAt) }}
+                      </a-typography-text>
+                    </a-space>
+                  </a-flex>
+                </a-flex>
+                <LeftOutlined :style="{ color: token.colorTextQuaternary, flexShrink: 0 }" />
+              </a-flex>
+            </a-flex>
+          </a-collapse-panel>
+        </a-collapse>
+      </template>
+    </a-spin>
+  </a-card>
+</template>
diff --git a/apps/web/src/components/pipeline/DealCard.vue b/apps/web/src/components/pipeline/DealCard.vue
index a4bd9d9..556f7c4 100644
--- a/apps/web/src/components/pipeline/DealCard.vue
+++ b/apps/web/src/components/pipeline/DealCard.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { computed } from 'vue';
+import { computed, ref } from 'vue';
 import {
   CalendarOutlined,
   CheckOutlined,
@@ -18,6 +18,7 @@ import {
   Typography,
   theme,
 } from 'ant-design-vue';
+import DealQuickActivityPopover from '@/components/pipeline/DealQuickActivityPopover.vue';
 import { userAvatarSrc } from '@/lib/userAvatars';
 import type { ActivityPriority } from '@mento/shared';
 import type { PipelineAccent, PipelineDeal, PipelineUiCopy } from '@/lib/pipeline-board';
@@ -51,6 +52,11 @@ const emit = defineEmits<{
 const { Text: ATypographyText } = Typography;
 const { token } = theme.useToken();
 
+const activityOpen = ref(false);
+const highlighted = computed(
+  () => props.selected || props.peeking || activityOpen.value,
+);
+
 const showAmount = computed(
   () => !props.copy.hideAmount && props.deal.amount != null,
 );
@@ -103,11 +109,11 @@ const cardStyle = computed(() => ({
   transform: props.dragging ? 'scale(0.98)' : 'none',
   transition: 'opacity 180ms ease, transform 180ms ease, box-shadow 180ms ease',
   margin: 0,
-  position: props.peeking ? 'relative' : undefined,
-  zIndex: props.peeking ? 2 : undefined,
-  background: props.selected || props.peeking ? token.value.colorPrimaryBg : token.value.colorBgContainer,
-  borderColor: props.selected || props.peeking ? token.value.colorPrimary : token.value.colorBorderSecondary,
-  boxShadow: props.peeking
+  position: highlighted.value ? 'relative' : undefined,
+  zIndex: highlighted.value ? 2 : undefined,
+  background: highlighted.value ? token.value.colorPrimaryBg : token.value.colorBgContainer,
+  borderColor: highlighted.value ? token.value.colorPrimary : token.value.colorBorderSecondary,
+  boxShadow: highlighted.value
     ? `0 0 0 2px ${token.value.colorPrimary}`
     : props.dragging
       ? token.value.boxShadow
@@ -235,32 +241,44 @@ const cardStyle = computed(() => ({
             {{ deal.date }}
           </a-typography-text>
         </a-space>
-        <a-typography-text
-          v-if="showAmount"
-          strong
-          dir="ltr"
-          :style="{ margin: 0, whiteSpace: 'nowrap', flexShrink: 0 }"
-        >
-          {{ money.number }}
-          <a-typography-text type="secondary" :style="{ fontSize: `${token.fontSizeSM}px` }">
-            {{ money.unit }}
+        <a-space :size="4" align="center" :style="{ flexShrink: 0 }">
+          <a-typography-text
+            v-if="showAmount"
+            strong
+            dir="ltr"
+            :style="{ margin: 0, whiteSpace: 'nowrap' }"
+          >
+            {{ money.number }}
+            <a-typography-text type="secondary" :style="{ fontSize: `${token.fontSizeSM}px` }">
+              {{ money.unit }}
+            </a-typography-text>
           </a-typography-text>
-        </a-typography-text>
-        <a-button
-          v-if="copy.quickView && !selectMode"
-          type="text"
-          :aria-label="previewing ? 'بستن پیش‌نمایش' : 'پیش‌نمایش فعالیت'"
-          :aria-expanded="previewing"
-          :style="{ color: token.colorTextSecondary }"
-          @click.stop="emit('open', deal.id)"
-        >
-          <template #icon><i class="chev" aria-hidden="true" :style="chevronStyle" /></template>
-        </a-button>
-        <a-tooltip v-else-if="priorityFlag" :title="`اولویت: ${priorityFlag.label}`">
-          <span :style="{ display: 'inline-flex', flexShrink: 0, lineHeight: 1 }">
-            <FlagFilled :style="{ color: priorityFlag.color, fontSize: '16px' }" />
+          <a-button
+            v-if="copy.quickView && !selectMode"
+            type="text"
+            :aria-label="previewing ? 'بستن پیش‌نمایش' : 'پیش‌نمایش فعالیت'"
+            :aria-expanded="previewing"
+            :style="{ color: token.colorTextSecondary }"
+            @click.stop="emit('open', deal.id)"
+          >
+            <template #icon><i class="chev" aria-hidden="true" :style="chevronStyle" /></template>
+          </a-button>
+          <a-tooltip v-else-if="priorityFlag" :title="`اولویت: ${priorityFlag.label}`">
+            <span :style="{ display: 'inline-flex', flexShrink: 0, lineHeight: 1 }">
+              <FlagFilled :style="{ color: priorityFlag.color, fontSize: '16px' }" />
+            </span>
+          </a-tooltip>
+          <span
+            v-if="copy.quickActivity && !selectMode"
+            @click.stop
+            @mousedown.stop
+          >
+            <DealQuickActivityPopover
+              :deal="deal"
+              @update:open="activityOpen = $event"
+            />
           </span>
-        </a-tooltip>
+        </a-space>
       </a-flex>
     </a-flex>
   </a-card>
diff --git a/apps/web/src/components/pipeline/DealQuickActivityPopover.vue b/apps/web/src/components/pipeline/DealQuickActivityPopover.vue
new file mode 100644
index 0000000..033a8b6
--- /dev/null
+++ b/apps/web/src/components/pipeline/DealQuickActivityPopover.vue
@@ -0,0 +1,376 @@
+<script setup lang="ts">
+import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue';
+import { useRouter } from 'vue-router';
+import {
+  Alert as AAlert,
+  Button as AButton,
+  Col as ACol,
+  Divider as ADivider,
+  Flex as AFlex,
+  FormItem as AFormItem,
+  Input as AInput,
+  Row as ARow,
+  Select as ASelect,
+  Space as ASpace,
+  Tooltip as ATooltip,
+  Typography,
+  message,
+  theme,
+} from 'ant-design-vue';
+import { CalendarOutlined, CloseOutlined, FormOutlined } from '@ant-design/icons-vue';
+import type { ActivityDto, ActivityType, CreateActivityRequest } from '@mento/shared';
+import { ACTIVITY_TYPE_LABELS } from '@mento/shared';
+import JalaliDateInput from '@/components/JalaliDateInput.vue';
+import { api } from '@/lib/api';
+import { formatLocalDateInput } from '@/lib/jalali';
+import type { PipelineDeal } from '@/lib/pipeline-board';
+
+const { Title: ATypographyTitle, Link: ATypographyLink } = Typography;
+
+const props = defineProps<{
+  deal: PipelineDeal;
+  disabled?: boolean;
+}>();
+
+const emit = defineEmits<{
+  'update:open': [open: boolean];
+}>();
+
+const router = useRouter();
+const { token } = theme.useToken();
+
+const open = ref(false);
+const rendered = ref(false);
+const placed = ref(false);
+const panelEl = ref<HTMLElement | null>(null);
+const frame = ref({ left: 12, top: 12, width: 360, maxHeight: 480, shift: 88 });
+let hideTimer = 0;
+let reveal = false;
+const VIEW_PAD = 16;
+
+const saving = ref(false);
+const error = ref('');
+const title = ref('');
+const type = ref<ActivityType>('task');
+const dueDate = ref('');
+const dueTime = ref('');
+
+const typeOptions = computed(() =>
+  (Object.entries(ACTIVITY_TYPE_LABELS) as Array<[ActivityType, string]>)
+    .filter(([value]) => value !== 'note')
+    .map(([value, label]) => ({ value, label })),
+);
+
+const fieldItemStyle = computed(() => ({
+  marginBottom: 0,
+  width: '100%',
+}));
+
+function resetForm() {
+  title.value = `پیگیری: ${props.deal.title}`;
+  type.value = 'task';
+  dueDate.value = formatLocalDateInput(new Date());
+  dueTime.value = '';
+  error.value = '';
+}
+
+function cardEl() {
+  return document.querySelector<HTMLElement>(
+    `.ant-card[data-card-id="${CSS.escape(props.deal.id)}"]`,
+  );
+}
+
+function columnScroller(el: HTMLElement) {
+  let node = el.parentElement;
+  while (node) {
+    const style = getComputedStyle(node);
+    const scrolls = style.overflowY === 'auto' || style.overflowY === 'scroll';
+    if (scrolls && node.scrollHeight > node.clientHeight + 2) return node;
+    node = node.parentElement;
+  }
+  return null;
+}
+
+function panelExtent() {
+  const content = panelEl.value?.scrollHeight ?? 0;
+  return content > 80 ? content : 360;
+}
+
+function liftColumn(el: HTMLElement, cardTop: number, height: number, vh: number) {
+  const overflow = cardTop + height - (vh - VIEW_PAD);
+  if (overflow <= 8) return;
+  const scroller = columnScroller(el);
+  if (!scroller) return;
+  const room = scroller.scrollHeight - scroller.clientHeight - scroller.scrollTop;
+  const delta = Math.min(overflow, Math.max(0, room));
+  if (delta <= 8) return;
+  const motion = window.matchMedia('(prefers-reduced-motion: reduce)').matches ? 'auto' : 'smooth';
+  scroller.scrollBy({ top: delta, behavior: motion });
+}
+
+function measure() {
+  const el = cardEl();
+  if (!el) return;
+  let rect = el.getBoundingClientRect();
+  if (rect.width < 8) return;
+  const vw = window.innerWidth;
+  const vh = window.innerHeight;
+  const width = Math.min(360, vw - 24);
+  const gap = 10;
+  const side: 'left' | 'right' = rect.left >= vw - rect.right ? 'left' : 'right';
+  let left = side === 'left' ? rect.left - gap - width : rect.right + gap;
+  left = Math.max(12, Math.min(left, vw - width - 12));
+  const height = Math.min(panelExtent(), Math.max(200, vh - VIEW_PAD * 2));
+  if (reveal) {
+    reveal = false;
+    liftColumn(el, rect.top, height, vh);
+    rect = el.getBoundingClientRect();
+  }
+  let top = rect.top;
+  const maxTop = vh - VIEW_PAD - height;
+  if (top > maxTop) top = Math.max(VIEW_PAD, maxTop);
+  if (top < VIEW_PAD) top = VIEW_PAD;
+  const maxHeight = Math.max(200, vh - VIEW_PAD - top);
+  const travel = Math.min(100, Math.round(width * 0.28));
+  frame.value = { left, top, width, maxHeight, shift: side === 'left' ? travel : -travel };
+}
+
+const panelStyle = computed(() => ({
+  position: 'fixed' as const,
+  zIndex: 1050,
+  top: `${frame.value.top}px`,
+  left: `${frame.value.left}px`,
+  width: `${frame.value.width}px`,
+  maxHeight: `${frame.value.maxHeight}px`,
+  overflow: 'auto' as const,
+  boxSizing: 'border-box' as const,
+  padding: `${token.value.padding}px`,
+  background: token.value.colorBgElevated,
+  color: token.value.colorText,
+  border: `1px solid ${token.value.colorBorderSecondary}`,
+  borderRadius: `${token.value.borderRadiusLG}px`,
+  boxShadow: token.value.boxShadowSecondary,
+  transform: placed.value ? 'translate3d(0, 0, 0)' : `translate3d(${frame.value.shift}px, 0, 0)`,
+  opacity: placed.value ? 1 : 0,
+  transition: 'transform 220ms cubic-bezier(.2, .8, .2, 1), opacity 180ms ease',
+  pointerEvents: placed.value ? ('auto' as const) : ('none' as const),
+}));
+
+function setOpen(next: boolean) {
+  if (open.value === next) return;
+  open.value = next;
+  emit('update:open', next);
+}
+
+function toggleOpen() {
+  if (props.disabled) return;
+  setOpen(!open.value);
+}
+
+function close() {
+  setOpen(false);
+}
+
+function onViewport() {
+  if (open.value) measure();
+}
+
+function onPointerDown(event: PointerEvent) {
+  if (!open.value || !placed.value) return;
+  const target = event.target;
+  if (!(target instanceof Node)) return;
+  if (panelEl.value?.contains(target)) return;
+  if (
+    target instanceof Element &&
+    target.closest('.ant-select-dropdown, #jalali-picker, .layer')
+  ) {
+    return;
+  }
+  const card = cardEl();
+  if (card?.contains(target)) return;
+  close();
+}
+
+function onKey(event: KeyboardEvent) {
+  if (event.key === 'Escape' && open.value) close();
+}
+
+watch(open, async (isOpen) => {
+  if (!isOpen) {
+    placed.value = false;
+    window.clearTimeout(hideTimer);
+    hideTimer = window.setTimeout(() => {
+      if (!open.value) rendered.value = false;
+    }, 230);
+    return;
+  }
+  window.clearTimeout(hideTimer);
+  resetForm();
+  rendered.value = true;
+  reveal = true;
+  measure();
+  await nextTick();
+  measure();
+  requestAnimationFrame(() => {
+    requestAnimationFrame(() => {
+      if (open.value) {
+        placed.value = true;
+        void nextTick().then(() => measure());
+      }
+    });
+  });
+});
+
+onMounted(() => {
+  window.addEventListener('resize', onViewport);
+  window.addEventListener('scroll', onViewport, true);
+  document.addEventListener('pointerdown', onPointerDown, true);
+  document.addEventListener('keydown', onKey);
+});
+
+onBeforeUnmount(() => {
+  window.removeEventListener('resize', onViewport);
+  window.removeEventListener('scroll', onViewport, true);
+  document.removeEventListener('pointerdown', onPointerDown, true);
+  document.removeEventListener('keydown', onKey);
+  window.clearTimeout(hideTimer);
+});
+
+function dueAtIso(): string | null {
+  if (!dueDate.value) return null;
+  const time = dueTime.value.trim() || '10:30';
+  const due = new Date(`${dueDate.value}T${time}:00`);
+  return Number.isNaN(due.getTime()) ? null : due.toISOString();
+}
+
+function fullFormQuery() {
+  const query: Record<string, string> = { dealId: props.deal.id };
+  if (props.deal.personId) query.personId = props.deal.personId;
+  if (props.deal.companyId) query.companyId = props.deal.companyId;
+  if (title.value.trim()) query.title = title.value.trim();
+  if (type.value) query.type = type.value;
+  if (dueAtIso()) query.dueAt = dueAtIso()!;
+  return query;
+}
+
+function goFullForm() {
+  close();
+  void router.push({ name: 'activity-new', query: fullFormQuery() });
+}
+
+async function submit() {
+  error.value = '';
+  if (title.value.trim().length < 2) {
+    error.value = 'عنوان فعالیت را بنویسید.';
+    return;
+  }
+  const dueAt = dueAtIso();
+  if (!dueDate.value || !dueAt) {
+    error.value = 'تاریخ فعالیت را مشخص کنید.';
+    return;
+  }
+  const body: CreateActivityRequest = {
+    title: title.value.trim(),
+    type: type.value,
+    dueAt,
+    dealId: props.deal.id,
+    personId: props.deal.personId || null,
+    companyId: props.deal.companyId || null,
+    assigneeId: props.deal.ownerId || null,
+  };
+  saving.value = true;
+  try {
+    await api.post<ActivityDto>('/activities', body);
+    message.success('فعالیت ثبت شد');
+    close();
+  } catch {
+    error.value = 'ثبت فعالیت ناموفق بود.';
+  } finally {
+    saving.value = false;
+  }
+}
+</script>
+
+<template>
+  <a-tooltip title="افزودن فعالیت">
+    <a-button
+      type="text"
+      :disabled="disabled"
+      aria-label="افزودن فعالیت سریع"
+      :aria-expanded="open"
+      :style="{
+        color: open ? token.colorPrimary : token.colorTextSecondary,
+        width: '28px',
+        minWidth: '28px',
+        height: '28px',
+        padding: 0,
+      }"
+      @click.stop="toggleOpen"
+      @mousedown.stop
+      @dragstart.stop.prevent
+    >
+      <template #icon><CalendarOutlined /></template>
+    </a-button>
+  </a-tooltip>
+
+  <Teleport to="body">
+    <div
+      v-if="rendered"
+      ref="panelEl"
+      role="dialog"
+      dir="rtl"
+      :aria-label="`ایجاد فعالیت سریع برای ${deal.title}`"
+      :style="panelStyle"
+    >
+      <a-flex justify="space-between" align="center" :style="{ marginBottom: `${token.marginSM}px` }">
+        <a-typography-title :level="5" :style="{ margin: 0 }">ایجاد فعالیت سریع</a-typography-title>
+        <a-button type="text" aria-label="بستن" @click="close">
+          <template #icon><CloseOutlined /></template>
+        </a-button>
+      </a-flex>
+
+      <a-flex vertical :gap="token.marginSM">
+        <a-alert v-if="error" type="error" show-icon :message="error" />
+
+        <a-form-item label="عنوان" :style="fieldItemStyle">
+          <a-input v-model:value="title" placeholder="عنوان فعالیت" allow-clear />
+        </a-form-item>
+
+        <a-form-item label="نوع" :style="fieldItemStyle">
+          <a-select v-model:value="type" :options="typeOptions" style="width: 100%" />
+        </a-form-item>
+
+        <a-row :gutter="[12, 12]" align="top">
+          <a-col :span="12">
+            <a-form-item label="تاریخ" :style="fieldItemStyle">
+              <JalaliDateInput v-model="dueDate" placeholder="تاریخ" style="width: 100%" />
+            </a-form-item>
+          </a-col>
+          <a-col :span="12">
+            <a-form-item label="ساعت" :style="fieldItemStyle">
+              <JalaliDateInput
+                v-model="dueTime"
+                mode="time"
+                placeholder="اختیاری"
+                style="width: 100%"
+              />
+            </a-form-item>
+          </a-col>
+        </a-row>
+
+        <a-divider :style="{ margin: `${token.marginXS}px 0` }" />
+
+        <a-flex justify="space-between" align="center" wrap="wrap" :gap="8">
+          <a-typography-link @click="goFullForm">
+            <FormOutlined />
+            فرم کامل
+          </a-typography-link>
+          <a-space :size="8">
+            <a-button :disabled="saving" @click="close">انصراف</a-button>
+            <a-button type="primary" :loading="saving" @click="submit">ذخیره</a-button>
+          </a-space>
+        </a-flex>
+      </a-flex>
+    </div>
+  </Teleport>
+</template>
diff --git a/apps/web/src/lib/pipeline-board.ts b/apps/web/src/lib/pipeline-board.ts
index 7162445..c7b1923 100644
--- a/apps/web/src/lib/pipeline-board.ts
+++ b/apps/web/src/lib/pipeline-board.ts
@@ -20,6 +20,8 @@ export type PipelineDeal = {
   assigneeNames?: string[];
   ownerId?: string | null;
   assigneeIds?: string[];
+  personId?: string | null;
+  companyId?: string | null;
   /** متن‌های قابل جستجو (مشتری، شرکت، یادداشت، مسئولان …) */
   searchFields?: Array<string | null | undefined>;
   /** اولویت فعالیت؛ فقط روی کارت فعالیت نشان داده می‌شود */
@@ -36,6 +38,8 @@ export type PipelineUiCopy = {
   hideAmount?: boolean;
   /** کارت فعالیت: پرچم کنار عنوان و پنجرهٔ خلاصه به‌جای ورود مستقیم به جزئیات */
   quickView?: boolean;
+  /** گوشه کارت: ایجاد سریع فعالیت برای معامله */
+  quickActivity?: boolean;
 };
 
 export const DEAL_BOARD_COPY: PipelineUiCopy = {
@@ -45,6 +49,7 @@ export const DEAL_BOARD_COPY: PipelineUiCopy = {
   addItemAria: 'افزودن معامله به این مرحله',
   itemMenuAria: 'گزینه‌های معامله',
   listColTitle: 'معامله',
+  quickActivity: true,
 };
 
 export const PROJECT_BOARD_COPY: PipelineUiCopy = {
@@ -185,8 +190,8 @@ export function mapBoardToStages(
         expectedCloseAt: string | null;
         createdAt: string;
         promotedFromPriorAt: string | null;
-        person: { fullName: string } | null;
-        company: { name: string } | null;
+        person: { id?: string; fullName: string } | null;
+        company: { id?: string; name: string } | null;
         owner?: { id: string; fullName: string } | null;
         assignees?: Array<{ id: string; fullName: string }>;
       }>;
@@ -239,6 +244,8 @@ export function mapBoardToStages(
           assigneeNames,
           ownerId: deal.owner?.id ?? null,
           assigneeIds: (deal.assignees ?? []).map((a) => a.id),
+          personId: deal.person?.id ?? null,
+          companyId: deal.company?.id ?? null,
           searchFields: [
             deal.notes,
             deal.company?.name,
diff --git a/apps/web/src/views/ActivityFormView.vue b/apps/web/src/views/ActivityFormView.vue
index 77c76dc..8add5e6 100644
--- a/apps/web/src/views/ActivityFormView.vue
+++ b/apps/web/src/views/ActivityFormView.vue
@@ -544,6 +544,16 @@ async function load() {
         personId.value = incomingPerson;
       }
       leadId.value = typeof route.query.leadId === 'string' ? route.query.leadId : '';
+      const incomingDeal =
+        typeof route.query.dealId === 'string' ? route.query.dealId : '';
+      if (incomingDeal) {
+        dealId.value = incomingDeal;
+        const linkedDeal = deals.value.find((d) => d.id === incomingDeal);
+        if (linkedDeal?.person?.id && !personId.value) {
+          await ensurePersonLoaded(linkedDeal.person.id);
+          personId.value = linkedDeal.person.id;
+        }
+      }
       const incomingDef =
         typeof route.query.typeDefId === 'string'
           ? activityTypes.byId.value.get(route.query.typeDefId)
diff --git a/apps/web/src/views/DealFormView.vue b/apps/web/src/views/DealFormView.vue
index fde84b4..ba7dd38 100644
--- a/apps/web/src/views/DealFormView.vue
+++ b/apps/web/src/views/DealFormView.vue
@@ -45,6 +45,7 @@ import { toFaDigits } from '@/lib/jalali';
 import { currencySuffix, formatMoney } from '@/lib/money';
 import CustomFieldsSection from '@/components/CustomFieldsSection.vue';
 import EntityTimeline from '@/components/EntityTimeline.vue';
+import RelatedActivitiesPanel from '@/components/activities/RelatedActivitiesPanel.vue';
 import RelatedTasksPanel from '@/components/routines/RelatedTasksPanel.vue';
 import JalaliDateInput from '@/components/JalaliDateInput.vue';
 import MoneyInput from '@/components/MoneyInput.vue';
@@ -1014,6 +1015,14 @@ onMounted(load);
               </a-form-item>
             </a-card>
 
+            <RelatedActivitiesPanel
+              v-if="!isNew && id"
+              :style="{ marginTop: '16px' }"
+              :deal-id="id"
+              :person-id="personId || null"
+              :company-id="companyId || null"
+              :deal-title="title"
+            />
             <RelatedTasksPanel
               v-if="!isNew && id"
               :style="{ marginTop: '16px' }"