feat(activities): peek at a card from the board

Let people read notes, postpone, and mark an activity done beside the card instead of opening the full page.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/web/src/components/pipeline/PipelineColumn.vue

@@ -26,8 +26,9 @@ const props = withDefaults(
     copy?: PipelineUiCopy;
     selectMode?: boolean;
     selectedIds?: Set<string>;
+    peekId?: string | null;
   }>(),
-  { copy: () => DEAL_BOARD_COPY, selectedIds: () => new Set() },
+  { copy: () => DEAL_BOARD_COPY, selectedIds: () => new Set(), peekId: null },
 );
 
 const emit = defineEmits<{
@@ -314,6 +315,7 @@ function onMenuClick({ key }: { key: string | number }) {
           :copy="copy"
           :select-mode="selectMode"
           :selected="selectedIds.has(deal.id)"
+          :peeking="peekId === deal.id"
           @drag-start="(d, e) => emit('dragStart', d, e)"
           @drag-end="clearDragUi(); emit('dragEnd')"
           @open="emit('openDeal', $event)"