feat(collections): bulk-add selected trip places to a list (#1081)

Add a "Save to collection" action to the trip place list's selection bar (next to
bulk category + delete): it opens a list picker and copies every selected place
into the chosen list in one request, instead of one-by-one from each place.

- Server: saveFromTripPlaces (one access check + one WS notify), POST
  places/from-trip-many; dedups by name/coords, skips missing ids, honours force.
- Client: saveFromTripMany api + SaveTripPlacesToListModal; the selection-bar
  button is gated on the collections addon being enabled.
- Copy count / skipped-duplicates toast; strings in all 22 locales.
- Service + controller tests for the bulk path.

client/src/components/Planner/PlacesSidebar.tsx

@@ -9,6 +9,7 @@ import { PlacesList } from './PlacesSidebarList'
 import { MobileDayPickerSheet } from './PlacesSidebarMobileDayPicker'
 import { ListImportModal } from './PlacesSidebarListImportModal'
 import { PlacesBulkCategoryModal } from './PlacesBulkCategoryModal'
+import SaveTripPlacesToListModal from '../Collections/SaveTripPlacesToListModal'
 
 const PlacesSidebar = React.memo(function PlacesSidebar(props: PlacesSidebarProps) {
   const S = usePlacesSidebar(props)
@@ -18,6 +19,7 @@ const PlacesSidebar = React.memo(function PlacesSidebar(props: PlacesSidebarProp
     fileImportOpen, setFileImportOpen, sidebarDropFile, setSidebarDropFile, tripId, pushUndo,
     ctxMenu, isMobile, pendingDeleteIds, setPendingDeleteIds, onBulkDeleteConfirm,
     categories, selectedIds, exitSelectMode, onBulkChangeCategory, categoryPickerOpen, setCategoryPickerOpen,
+    collectionsEnabled, saveToListOpen, setSaveToListOpen,
   } = S
   return (
     <div
@@ -61,6 +63,15 @@ const PlacesSidebar = React.memo(function PlacesSidebar(props: PlacesSidebarProp
           onPick={(catId) => { onBulkChangeCategory?.(Array.from(selectedIds), catId); setCategoryPickerOpen(false); exitSelectMode() }}
         />
       )}
+      {collectionsEnabled && (
+        <SaveTripPlacesToListModal
+          isOpen={saveToListOpen}
+          tripId={tripId}
+          placeIds={Array.from(selectedIds)}
+          onClose={() => setSaveToListOpen(false)}
+          onDone={exitSelectMode}
+        />
+      )}
       {isMobile && (
         <ConfirmDialog
           isOpen={!!pendingDeleteIds?.length}

client/src/components/Planner/PlacesSidebarSelectionBar.tsx

@@ -1,9 +1,9 @@
-import { Check, Tag, Trash2 } from 'lucide-react'
+import { Check, Tag, Trash2, Bookmark } from 'lucide-react'
 import Tooltip from '../shared/Tooltip'
 import type { SidebarState } from './usePlacesSidebar'
 
 export function PlacesSelectionBar(S: SidebarState) {
-  const { t, selectedIds, filtered, setSelectedIds, isMobile, setPendingDeleteIds, onBulkDeletePlaces, setCategoryPickerOpen } = S
+  const { t, selectedIds, filtered, setSelectedIds, isMobile, setPendingDeleteIds, onBulkDeletePlaces, setCategoryPickerOpen, collectionsEnabled, setSaveToListOpen } = S
   return (
     <div style={{
       margin: '6px 16px', padding: '5px 8px 5px 10px', borderRadius: 8,
@@ -49,6 +49,25 @@ export function PlacesSelectionBar(S: SidebarState) {
         <Tag size={13} strokeWidth={2} />
       </button>
       </Tooltip>
+      {collectionsEnabled && (
+        <Tooltip label={t('inspector.saveToCollection')} placement="bottom">
+        <button
+          onClick={() => { if (selectedIds.size === 0) return; setSaveToListOpen(true) }}
+          disabled={selectedIds.size === 0}
+          aria-label={t('inspector.saveToCollection')}
+          className={selectedIds.size > 0 ? 'bg-transparent text-content-muted' : 'bg-transparent text-content-faint'}
+          style={{
+            display: 'flex', alignItems: 'center', justifyContent: 'center',
+            width: 24, height: 24, borderRadius: 6, border: 'none',
+            cursor: selectedIds.size > 0 ? 'pointer' : 'default', padding: 0,
+          }}
+          onMouseEnter={e => { if (selectedIds.size > 0) e.currentTarget.style.background = 'var(--bg-hover)' }}
+          onMouseLeave={e => { e.currentTarget.style.background = 'transparent' }}
+        >
+          <Bookmark size={13} strokeWidth={2} />
+        </button>
+        </Tooltip>
+      )}
       <Tooltip label={t('places.deleteSelected')} placement="bottom">
       <button
         onClick={() => {

client/src/components/Planner/usePlacesSidebar.ts

@@ -153,6 +153,7 @@ export function usePlacesSidebar(props: PlacesSidebarProps) {
   const [selectedIds, setSelectedIds] = useState<Set<number>>(new Set())
   const [pendingDeleteIds, setPendingDeleteIds] = useState<number[] | null>(null)
   const [categoryPickerOpen, setCategoryPickerOpen] = useState(false)
+  const [saveToListOpen, setSaveToListOpen] = useState(false)
 
   const exitSelectMode = () => { setSelectMode(false); setSelectedIds(new Set()) }
 
@@ -266,6 +267,7 @@ export function usePlacesSidebar(props: PlacesSidebarProps) {
     search, setSearch, filter, setFilter, categoryFilters, setCategoryFiltersLocal,
     selectMode, setSelectMode, selectedIds, setSelectedIds, pendingDeleteIds, setPendingDeleteIds,
     categoryPickerOpen, setCategoryPickerOpen,
+    saveToListOpen, setSaveToListOpen, collectionsEnabled, tripId,
     exitSelectMode, toggleSelected, toggleCategoryFilter, dayPickerPlace, setDayPickerPlace,
     catDropOpen, setCatDropOpen, mobileShowDays, setMobileShowDays,
     hasTracks, plannedIds, filtered, registerPlaceRow, isAssignedToSelectedDay, inDaySet, openContextMenu,