feat(collections): select toolbar — select-all, move/duplicate to another list (#1081)

- The select toggle now sits at the right of the filter row (same height as the
  status/category dropdowns) instead of the top toolbar.
- Select mode gains a "select all / deselect all" toggle and shows even with
  nothing selected yet.
- Selected places can be moved or duplicated into another of your lists via a
  target-list picker (move re-points collection_id; duplicate re-saves the place
  data, carrying description / category / notes / etc.).
- New strings across all 22 locales.

client/src/components/Collections/CollectionFilterBar.tsx

@@ -1,5 +1,5 @@
 import React, { useEffect, useRef, useState } from 'react'
-import { ChevronDown, Check, Layers, Tag } from 'lucide-react'
+import { ChevronDown, Check, Layers, Tag, CheckSquare } from 'lucide-react'
 import type { StatusFilter } from '../../store/collectionStore'
 import type { TranslationFn } from '../../types'
 import { getCategoryIcon } from '../shared/categoryIcons'
@@ -69,6 +69,9 @@ interface CollectionFilterBarProps {
   categoryOptions: CategoryOption[]
   onStatusFilter: (f: StatusFilter) => void
   onCategoryFilter: (f: number | 'all') => void
+  showSelect: boolean
+  selectMode: boolean
+  onToggleSelect: () => void
   t: TranslationFn
 }
 
@@ -78,7 +81,8 @@ interface CollectionFilterBarProps {
  * Custom compact dropdowns so they barely take any space.
  */
 export default function CollectionFilterBar({
-  statusFilter, counts, categoryFilter, categoryOptions, onStatusFilter, onCategoryFilter, t,
+  statusFilter, counts, categoryFilter, categoryOptions, onStatusFilter, onCategoryFilter,
+  showSelect, selectMode, onToggleSelect, t,
 }: CollectionFilterBarProps): React.ReactElement {
   const statusOpts: Opt[] = [
     { key: 'all', label: t('common.all'), count: counts.all },
@@ -103,6 +107,11 @@ export default function CollectionFilterBar({
       {categoryOptions.length > 0 && (
         <Dropdown current={categoryFilter} options={catOpts} onSelect={k => onCategoryFilter(k as number | 'all')} lead={<Tag size={13} />} />
       )}
+      {showSelect && (
+        <button type="button" onClick={onToggleSelect} className={`col-filter-btn col-filter-select${selectMode ? ' open' : ''}`} aria-pressed={selectMode}>
+          <CheckSquare size={14} /> <span className="col-filter-lbl">{t('collections.select')}</span>
+        </button>
+      )}
     </div>
   )
 }

client/src/components/Collections/MoveToListModal.tsx

@@ -0,0 +1,90 @@
+import React, { useMemo, useState } from 'react'
+import { Search, ArrowRight, Copy, Loader2, Bookmark } from 'lucide-react'
+import Modal from '../shared/Modal'
+import type { Collection } from '@trek/shared'
+import type { TranslationFn } from '../../types'
+
+interface MoveToListModalProps {
+  mode: 'move' | 'copy'
+  /** Candidate target lists (owned, excluding the current one). */
+  lists: Collection[]
+  /** Number of selected places. */
+  count: number
+  onPick: (targetId: number) => Promise<void> | void
+  onClose: () => void
+  t: TranslationFn
+}
+
+/**
+ * Target-list picker for moving or duplicating the selected places into another
+ * of the user's lists. `mode` only changes the wording + the trailing icon; the
+ * action itself is the parent's onPick.
+ */
+export default function MoveToListModal({ mode, lists, count, onPick, onClose, t }: MoveToListModalProps): React.ReactElement {
+  const [search, setSearch] = useState('')
+  const [busy, setBusy] = useState<number | null>(null)
+
+  const filtered = useMemo(() => {
+    const q = search.trim().toLowerCase()
+    return q ? lists.filter(l => l.name.toLowerCase().includes(q)) : lists
+  }, [lists, search])
+
+  const pick = async (id: number) => {
+    if (busy != null) return
+    setBusy(id)
+    try { await onPick(id) } finally { setBusy(null) }
+  }
+
+  const Trailing = mode === 'move' ? ArrowRight : Copy
+
+  return (
+    <Modal
+      isOpen
+      onClose={onClose}
+      title={mode === 'move' ? t('collections.moveToListTitle', { count }) : t('collections.duplicateToListTitle', { count })}
+      size="sm"
+    >
+      <div className="flex flex-col gap-3">
+        {lists.length > 3 && (
+          <div className="relative">
+            <Search size={14} className="absolute left-2.5 top-1/2 -translate-y-1/2 text-content-faint" />
+            <input
+              autoFocus
+              value={search}
+              onChange={e => setSearch(e.target.value)}
+              placeholder={t('collections.copyToTripSearch')}
+              className="w-full pl-8 pr-3 py-2 rounded-lg border border-edge bg-surface-input text-content text-[13px] outline-none focus:border-accent"
+            />
+          </div>
+        )}
+        {filtered.length === 0 ? (
+          <p className="text-center text-[13px] text-content-faint py-8">{t('collections.noOtherLists')}</p>
+        ) : (
+          <div className="flex flex-col gap-1 max-h-[50vh] overflow-y-auto -mx-1 px-1">
+            {filtered.map(list => {
+              const isBusy = busy === list.id
+              return (
+                <button
+                  key={list.id}
+                  type="button"
+                  onClick={() => pick(list.id)}
+                  disabled={busy != null}
+                  className="flex items-center gap-3 px-3 py-2.5 rounded-xl border border-edge bg-surface-card text-left hover:bg-surface-hover transition-colors disabled:opacity-60"
+                >
+                  <span className="w-9 h-9 min-w-[36px] rounded-lg flex items-center justify-center shrink-0 text-white" style={{ background: list.color || '#6366f1' }}>
+                    <Bookmark size={15} />
+                  </span>
+                  <span className="flex-1 min-w-0">
+                    <span className="block text-[13px] font-semibold text-content truncate">{list.name}</span>
+                    <span className="block text-[11.5px] text-content-faint">{t('collections.placeCount', { count: list.place_count ?? 0 })}</span>
+                  </span>
+                  {isBusy ? <Loader2 size={15} className="animate-spin text-content-faint shrink-0" /> : <Trailing size={15} className="text-content-faint shrink-0" />}
+                </button>
+              )
+            })}
+          </div>
+        )}
+      </div>
+    </Modal>
+  )
+}