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/PipelineBoard.vue

@@ -21,8 +21,9 @@ 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<{
@@ -109,6 +110,7 @@ function submitAdd() {
         :copy="copy"
         :select-mode="selectMode"
         :selected-ids="selectedIds"
+        :peek-id="peekId"
         :is-first="index === 0"
         :is-last="index === stages.length - 1"
         @drag-start="(d, e) => emit('dragStart', d, e)"