diff --git a/client/src/api/authUrl.ts b/client/src/api/authUrl.ts
index cebd2f921..53c9935dc 100644
--- a/client/src/api/authUrl.ts
+++ b/client/src/api/authUrl.ts
@@ -50,7 +50,7 @@ export async function fetchImageAsBlob(url: string): Promise<string> {
     }
     if (active < MAX_CONCURRENT) {
       active++
-      run()
+      void run()
     } else {
       queue.push(run)
     }
diff --git a/client/src/api/websocket.ts b/client/src/api/websocket.ts
index 0f5974648..6a27abe5c 100644
--- a/client/src/api/websocket.ts
+++ b/client/src/api/websocket.ts
@@ -93,7 +93,7 @@ function scheduleReconnect(): void {
   reconnectTimer = setTimeout(() => {
     reconnectTimer = null
     if (shouldReconnect) {
-      connectInternal(true)
+      void connectInternal(true)
     }
   }, reconnectDelay)
   reconnectDelay = Math.min(reconnectDelay * 2, MAX_RECONNECT_DELAY)
@@ -141,7 +141,7 @@ async function connectInternal(_isReconnect = false): Promise<void> {
         // Flush queued mutations first so local writes land before server read-back.
         // If the hook fails, still refetch to keep the UI correct.
         if (preReconnectHook) {
-          preReconnectHook().catch(console.error).then(doRefetch)
+          void preReconnectHook().catch(console.error).then(doRefetch)
         } else {
           doRefetch()
         }
@@ -170,7 +170,7 @@ export function connect(): void {
     clearTimeout(reconnectTimer)
     reconnectTimer = null
   }
-  connectInternal(false)
+  void connectInternal(false)
 }
 
 export function disconnect(): void {
diff --git a/client/src/components/Admin/AddonManager.tsx b/client/src/components/Admin/AddonManager.tsx
index 5a9a2d5b5..9f556753e 100644
--- a/client/src/components/Admin/AddonManager.tsx
+++ b/client/src/components/Admin/AddonManager.tsx
@@ -114,7 +114,7 @@ export default function AddonManager({ bagTrackingEnabled, onToggleBagTracking,
   const [loading, setLoading] = useState(true)
 
   useEffect(() => {
-    loadAddons().finally(() => setLoading(false))
+    void loadAddons().finally(() => setLoading(false))
   }, [])
 
   const loadAddons = async () => {
@@ -410,7 +410,7 @@ function LlmParsingConfig({ addon }: { addon: Addon }) {
 
   // Load installed models when the local provider is active.
   useEffect(() => {
-    if (provider === 'local') loadModels()
+    if (provider === 'local') void loadModels()
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [provider])
 
diff --git a/client/src/components/Admin/BackupPanel.tsx b/client/src/components/Admin/BackupPanel.tsx
index 28ce06181..90b6896bc 100644
--- a/client/src/components/Admin/BackupPanel.tsx
+++ b/client/src/components/Admin/BackupPanel.tsx
@@ -73,7 +73,7 @@ export default function BackupPanel() {
     } catch {}
   }
 
-  useEffect(() => { loadBackups(); loadAutoSettings() }, [])
+  useEffect(() => { void loadBackups(); void loadAutoSettings() }, [])
 
   const handleCreate = async () => {
     setIsCreating(true)
diff --git a/client/src/components/Admin/CategoryManager.tsx b/client/src/components/Admin/CategoryManager.tsx
index db20979ac..67b072eb3 100644
--- a/client/src/components/Admin/CategoryManager.tsx
+++ b/client/src/components/Admin/CategoryManager.tsx
@@ -25,7 +25,7 @@ export default function CategoryManager() {
   const toast = useToast()
   const { t } = useTranslation()
 
-  useEffect(() => { loadCategories() }, [])
+  useEffect(() => { void loadCategories() }, [])
 
   const loadCategories = async () => {
     setIsLoading(true)
diff --git a/client/src/components/Admin/DefaultUserSettingsTab.tsx b/client/src/components/Admin/DefaultUserSettingsTab.tsx
index e235ab767..7a15ccd6c 100644
--- a/client/src/components/Admin/DefaultUserSettingsTab.tsx
+++ b/client/src/components/Admin/DefaultUserSettingsTab.tsx
@@ -218,7 +218,7 @@ export default function DefaultUserSettingsTab(): React.ReactElement {
       setMapboxStyle(nextStyle)
       patch[styleSettingKey(nextProvider)] = nextStyle
     }
-    save(patch)
+    void save(patch)
   }
 
   return (
@@ -320,7 +320,7 @@ export default function DefaultUserSettingsTab(): React.ReactElement {
         </label>
         <CustomSelect
           value={defaults.default_currency || ''}
-          onChange={(value: string) => { if (value) save({ default_currency: value }) }}
+          onChange={(value: string) => { if (value) void save({ default_currency: value }) }}
           placeholder={t('settings.currency')}
           searchable
           options={currenciesWith(defaults.default_currency).map(c => ({ value: c, label: SYMBOLS[c] ? `${c}  ${SYMBOLS[c]}` : c }))}
@@ -356,7 +356,7 @@ export default function DefaultUserSettingsTab(): React.ReactElement {
         </label>
         <CustomSelect
           value={mapTileUrl}
-          onChange={(value: string) => { if (value) { setMapTileUrl(value); save({ map_tile_url: value }) } }}
+          onChange={(value: string) => { if (value) { setMapTileUrl(value); void save({ map_tile_url: value }) } }}
           placeholder={t('settings.mapTemplatePlaceholder.select')}
           options={MAP_PRESETS.map(p => ({ value: p.url, label: p.name }))}
           size="sm"
@@ -473,7 +473,7 @@ export default function DefaultUserSettingsTab(): React.ReactElement {
               </label>
               <CustomSelect
                 value={mapboxStyle}
-                onChange={(value: string) => { if (value) { setMapboxStyle(value); save({ [styleKey]: value }) } }}
+                onChange={(value: string) => { if (value) { setMapboxStyle(value); void save({ [styleKey]: value }) } }}
                 placeholder={t('admin.defaultSettings.mapboxStylePlaceholder')}
                 options={glStylePresets.map(p => ({ value: p.url, label: p.name }))}
                 size="sm"
@@ -486,7 +486,7 @@ export default function DefaultUserSettingsTab(): React.ReactElement {
                 onBlur={() => {
                   const nextStyle = normalizeStyleForProvider(mapProvider, mapboxStyle)
                   setMapboxStyle(nextStyle)
-                  save({ [styleKey]: nextStyle })
+                  void save({ [styleKey]: nextStyle })
                 }}
                 placeholder={defaultStyleForProvider(mapProvider)}
                 className="w-full px-3 py-2 border border-slate-300 rounded-lg text-sm focus:ring-2 focus:ring-slate-400 focus:border-transparent"
diff --git a/client/src/components/Admin/GitHubPanel.tsx b/client/src/components/Admin/GitHubPanel.tsx
index fb54eb708..90ad9b570 100644
--- a/client/src/components/Admin/GitHubPanel.tsx
+++ b/client/src/components/Admin/GitHubPanel.tsx
@@ -53,7 +53,7 @@ export default function GitHubPanel({ isPrerelease = false }: { isPrerelease?: b
 
   useEffect(() => {
     setLoading(true);
-    fetchReleases(1).finally(() => setLoading(false));
+    void fetchReleases(1).finally(() => setLoading(false));
   }, []);
 
   const handleLoadMore = async () => {
diff --git a/client/src/components/Admin/PackingTemplateManager.tsx b/client/src/components/Admin/PackingTemplateManager.tsx
index df4197d77..3be66bbc3 100644
--- a/client/src/components/Admin/PackingTemplateManager.tsx
+++ b/client/src/components/Admin/PackingTemplateManager.tsx
@@ -46,7 +46,7 @@ export default function PackingTemplateManager() {
   const toast = useToast()
   const { t } = useTranslation()
 
-  useEffect(() => { loadTemplates() }, [])
+  useEffect(() => { void loadTemplates() }, [])
 
   const loadTemplates = async () => {
     setIsLoading(true)
@@ -178,7 +178,7 @@ export default function PackingTemplateManager() {
         <div className="px-5 py-3 border-b border-slate-100 flex items-center gap-3">
           <Package size={16} className="text-slate-400 flex-shrink-0" />
           <input autoFocus value={createName} onChange={e => setCreateName(e.target.value)}
-            onKeyDown={e => { if (e.key === 'Enter') handleCreateTemplate(); if (e.key === 'Escape') setShowCreate(false) }}
+            onKeyDown={e => { if (e.key === 'Enter') void handleCreateTemplate(); if (e.key === 'Escape') setShowCreate(false) }}
             placeholder={t('admin.packingTemplates.namePlaceholder')} className={inputStyle} />
           <button type="button" onClick={handleCreateTemplate} className={`${btnIcon} text-slate-600 hover:text-slate-900`}><Check size={16} /></button>
           <button type="button" onClick={() => setShowCreate(false)} className={`${btnIcon} text-slate-400 hover:text-slate-600`}><X size={16} /></button>
@@ -203,7 +203,7 @@ export default function PackingTemplateManager() {
                 {editingTemplate === tmpl.id ? (
                   <input autoFocus value={editTemplateName} onChange={e => setEditTemplateName(e.target.value)}
                     onBlur={() => handleRenameTemplate(tmpl.id)}
-                    onKeyDown={e => { if (e.key === 'Enter') handleRenameTemplate(tmpl.id); if (e.key === 'Escape') setEditingTemplate(null) }}
+                    onKeyDown={e => { if (e.key === 'Enter') void handleRenameTemplate(tmpl.id); if (e.key === 'Escape') setEditingTemplate(null) }}
                     className="flex-1 px-2 py-0.5 border border-slate-300 rounded text-sm" />
                 ) : (
                   <button type="button" onClick={() => toggleExpand(tmpl.id)} className="flex-1 text-left bg-transparent border-0 p-0 text-sm font-medium text-slate-700 cursor-pointer">{tmpl.name}</button>
@@ -230,7 +230,7 @@ export default function PackingTemplateManager() {
                             <>
                               <input autoFocus value={editCatName} onChange={e => setEditCatName(e.target.value)}
                                 onBlur={() => handleRenameCategory(cat.id)}
-                                onKeyDown={e => { if (e.key === 'Enter') handleRenameCategory(cat.id); if (e.key === 'Escape') setEditingCatId(null) }}
+                                onKeyDown={e => { if (e.key === 'Enter') void handleRenameCategory(cat.id); if (e.key === 'Escape') setEditingCatId(null) }}
                                 className="flex-1 px-2 py-0.5 border border-slate-300 rounded text-sm font-semibold" />
                             </>
                           ) : (
@@ -253,7 +253,7 @@ export default function PackingTemplateManager() {
                                 {editingItemId === item.id ? (
                                   <>
                                     <input autoFocus value={editItemName} onChange={e => setEditItemName(e.target.value)}
-                                      onKeyDown={e => { if (e.key === 'Enter') handleRenameItem(item.id); if (e.key === 'Escape') setEditingItemId(null) }}
+                                      onKeyDown={e => { if (e.key === 'Enter') void handleRenameItem(item.id); if (e.key === 'Escape') setEditingItemId(null) }}
                                       className="flex-1 px-2 py-1 border border-slate-200 rounded-lg text-sm" />
                                     <button type="button" onClick={() => handleRenameItem(item.id)} className="p-1 text-slate-600 hover:text-slate-900"><Check size={13} /></button>
                                     <button type="button" onClick={() => setEditingItemId(null)} className="p-1 text-slate-400"><X size={13} /></button>
@@ -277,7 +277,7 @@ export default function PackingTemplateManager() {
                             {addingItemToCatId === cat.id && (
                               <div className="flex items-center gap-2 px-4 py-2">
                                 <input ref={addItemRef} value={newItemName} onChange={e => setNewItemName(e.target.value)}
-                                  onKeyDown={e => { if (e.key === 'Enter' && newItemName.trim()) handleAddItem(cat.id); if (e.key === 'Escape') { setAddingItemToCatId(null); setNewItemName('') } }}
+                                  onKeyDown={e => { if (e.key === 'Enter' && newItemName.trim()) void handleAddItem(cat.id); if (e.key === 'Escape') { setAddingItemToCatId(null); setNewItemName('') } }}
                                   placeholder={t('admin.packingTemplates.itemName')}
                                   className="flex-1 px-2 py-1 border border-slate-200 rounded-lg text-sm" />
                                 <button type="button" onClick={() => handleAddItem(cat.id)} disabled={!newItemName.trim()}
@@ -296,7 +296,7 @@ export default function PackingTemplateManager() {
                   {addingCategory ? (
                     <div className="flex items-center gap-2">
                       <input autoFocus value={newCatName} onChange={e => setNewCatName(e.target.value)}
-                        onKeyDown={e => { if (e.key === 'Enter') handleAddCategory(); if (e.key === 'Escape') { setAddingCategory(false); setNewCatName('') } }}
+                        onKeyDown={e => { if (e.key === 'Enter') void handleAddCategory(); if (e.key === 'Escape') { setAddingCategory(false); setNewCatName('') } }}
                         placeholder={t('admin.packingTemplates.categoryName')}
                         className="flex-1 px-3 py-2 border border-slate-200 rounded-lg text-sm" />
                       <button type="button" onClick={handleAddCategory} className={`${btnIcon} text-slate-600 hover:text-slate-900`}><Check size={15} /></button>
diff --git a/client/src/components/Admin/PermissionsPanel.tsx b/client/src/components/Admin/PermissionsPanel.tsx
index 6b2b149b7..f0d32b7da 100644
--- a/client/src/components/Admin/PermissionsPanel.tsx
+++ b/client/src/components/Admin/PermissionsPanel.tsx
@@ -38,7 +38,7 @@ export default function PermissionsPanel(): React.ReactElement {
   const [dirty, setDirty] = useState(false)
 
   useEffect(() => {
-    loadPermissions()
+    void loadPermissions()
   }, [])
 
   const loadPermissions = async () => {
diff --git a/client/src/components/Budget/BudgetPanelCategoryTable.tsx b/client/src/components/Budget/BudgetPanelCategoryTable.tsx
index e68346e48..7ac16aef7 100644
--- a/client/src/components/Budget/BudgetPanelCategoryTable.tsx
+++ b/client/src/components/Budget/BudgetPanelCategoryTable.tsx
@@ -79,7 +79,7 @@ export default function BudgetCategoryTable({ cat, grouped, categoryColor, canEd
                     const toIdx = newOrder.indexOf(cat)
                     newOrder.splice(fromIdx, 1)
                     newOrder.splice(toIdx, 0, dragCat)
-                    reorderBudgetCategories(tripId, newOrder)
+                    void reorderBudgetCategories(tripId, newOrder)
                   }
                   setDragCat(null); setDragOverCat(null)
                 }}
@@ -103,8 +103,8 @@ export default function BudgetCategoryTable({ cat, grouped, categoryColor, canEd
                         autoFocus
                         value={editingCat.value}
                         onChange={e => setEditingCat({ ...editingCat, value: e.target.value })}
-                        onBlur={() => { handleRenameCategory(cat, editingCat.value); setEditingCat(null) }}
-                        onKeyDown={e => { if (e.key === 'Enter') { handleRenameCategory(cat, editingCat.value); setEditingCat(null) } if (e.key === 'Escape') setEditingCat(null) }}
+                        onBlur={() => { void handleRenameCategory(cat, editingCat.value); setEditingCat(null) }}
+                        onKeyDown={e => { if (e.key === 'Enter') { void handleRenameCategory(cat, editingCat.value); setEditingCat(null) } if (e.key === 'Escape') setEditingCat(null) }}
                         style={{ fontWeight: 600, fontSize: 'calc(13px * var(--fs-scale-body, 1))', background: 'rgba(255,255,255,0.15)', border: 'none', borderRadius: 4, color: '#fff', padding: '1px 6px', outline: 'none', fontFamily: 'inherit', width: '100%' }}
                       />
                     ) : (
@@ -180,7 +180,7 @@ export default function BudgetCategoryTable({ cat, grouped, categoryColor, canEd
                                 const toIdx = ids.indexOf(item.id)
                                 ids.splice(fromIdx, 1)
                                 ids.splice(toIdx, 0, dragItem)
-                                reorderBudgetItems(tripId, ids)
+                                void reorderBudgetItems(tripId, ids)
                                 setDragItem(null); setDragOverItem(null); setDragItemCat(null)
                               }
                             }}
diff --git a/client/src/components/Collab/CollabNotesAuthedImg.tsx b/client/src/components/Collab/CollabNotesAuthedImg.tsx
index 799eb9820..e5386f51d 100644
--- a/client/src/components/Collab/CollabNotesAuthedImg.tsx
+++ b/client/src/components/Collab/CollabNotesAuthedImg.tsx
@@ -4,7 +4,7 @@ import { getAuthUrl } from '../../api/authUrl'
 export function AuthedImg({ src, style, onClick, onMouseEnter, onMouseLeave, alt }: { src: string; style?: React.CSSProperties; onClick?: () => void; onMouseEnter?: React.MouseEventHandler<HTMLElement>; onMouseLeave?: React.MouseEventHandler<HTMLElement>; alt?: string }) {
   const [authSrc, setAuthSrc] = useState('')
   useEffect(() => {
-    getAuthUrl(src, 'download').then(setAuthSrc)
+    void getAuthUrl(src, 'download').then(setAuthSrc)
   }, [src])
   if (!authSrc) return null
   // A clickable thumbnail gets a real button around the image so it is
diff --git a/client/src/components/Collab/CollabNotesCard.tsx b/client/src/components/Collab/CollabNotesCard.tsx
index 3c625cf75..ce64c0bfd 100644
--- a/client/src/components/Collab/CollabNotesCard.tsx
+++ b/client/src/components/Collab/CollabNotesCard.tsx
@@ -53,7 +53,7 @@ export function NoteCard({ note, canEdit, onUpdate, onDelete, onEdit, onView, on
   const menu = useContextMenu()
 
   const handleTogglePin = useCallback(() => {
-    onUpdate(note.id, { pinned: !note.pinned })
+    void onUpdate(note.id, { pinned: !note.pinned })
   }, [note.id, note.pinned, onUpdate])
 
   const handleDelete = useCallback(() => {
diff --git a/client/src/components/Collab/CollabNotesFilePreviewPortal.tsx b/client/src/components/Collab/CollabNotesFilePreviewPortal.tsx
index 49cda7ee1..e88407ff8 100644
--- a/client/src/components/Collab/CollabNotesFilePreviewPortal.tsx
+++ b/client/src/components/Collab/CollabNotesFilePreviewPortal.tsx
@@ -25,7 +25,7 @@ export function FilePreviewPortal({ file, onClose }: FilePreviewPortalProps) {
   useEffect(() => {
     setAuthUrl('')
     if (!rawUrl) return
-    getAuthUrl(rawUrl, 'download').then(setAuthUrl)
+    void getAuthUrl(rawUrl, 'download').then(setAuthUrl)
   }, [rawUrl])
 
   const isImage = !!file?.mime_type?.startsWith('image/')
diff --git a/client/src/components/Collections/AddPlaceToCollectionModal.tsx b/client/src/components/Collections/AddPlaceToCollectionModal.tsx
index 230207e00..2955fb184 100644
--- a/client/src/components/Collections/AddPlaceToCollectionModal.tsx
+++ b/client/src/components/Collections/AddPlaceToCollectionModal.tsx
@@ -205,7 +205,7 @@ export default function AddPlaceToCollectionModal({ isOpen, collectionId, collec
                 type="text"
                 value={query}
                 onChange={e => { setQuery(e.target.value); setNoResults(false) }}
-                onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); search() } }}
+                onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); void search() } }}
                 aria-label={t('collections.addPlaceSearch')}
                 placeholder={t('collections.addPlaceSearch')}
                 className={`${INPUT} pl-8`}
diff --git a/client/src/components/Collections/LabelManager.tsx b/client/src/components/Collections/LabelManager.tsx
index a122e1da7..56fd53430 100644
--- a/client/src/components/Collections/LabelManager.tsx
+++ b/client/src/components/Collections/LabelManager.tsx
@@ -150,7 +150,7 @@ export default function LabelManager({ isOpen, labels, onCreate, onUpdate, onDel
             <input
               value={newName}
               onChange={e => setNewName(e.target.value)}
-              onKeyDown={e => { if (e.key === 'Enter') add() }}
+              onKeyDown={e => { if (e.key === 'Enter') void add() }}
               maxLength={60}
               placeholder={t('collections.labels.namePlaceholder')}
               className={`${INPUT} flex-1`}
diff --git a/client/src/components/Collections/ListEditorModal.tsx b/client/src/components/Collections/ListEditorModal.tsx
index 415614c82..ca57fff5b 100644
--- a/client/src/components/Collections/ListEditorModal.tsx
+++ b/client/src/components/Collections/ListEditorModal.tsx
@@ -219,7 +219,7 @@ export default function ListEditorModal({ target, onClose, onCreated, onRequestD
           <input
             value={coverQuery}
             onChange={e => setCoverQuery(e.target.value)}
-            onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); searchCover() } }}
+            onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); void searchCover() } }}
             aria-label={t('dashboard.unsplashSearchPlaceholder')}
             placeholder={t('dashboard.unsplashSearchPlaceholder')}
             className={`${INPUT} flex-1`}
diff --git a/client/src/components/Collections/MSaveToCollectionSheet.tsx b/client/src/components/Collections/MSaveToCollectionSheet.tsx
index 8afd008b0..9d99d6924 100644
--- a/client/src/components/Collections/MSaveToCollectionSheet.tsx
+++ b/client/src/components/Collections/MSaveToCollectionSheet.tsx
@@ -56,7 +56,7 @@ export default function MSaveToCollectionSheet() {
     let cancelled = false
     setLoading(true)
     setMembership(null)
-    Promise.all([
+    void Promise.all([
       collectionsApi.list().catch(() => ({ collections: [], incomingInvites: [] })),
       membershipQuery
         ? collectionsApi.membership(membershipQuery).catch(() => ({ saved: false, lists: [] as CollectionMembership['lists'] }))
diff --git a/client/src/components/Collections/SaveToCollectionModal.tsx b/client/src/components/Collections/SaveToCollectionModal.tsx
index 6dbcfcce4..2f1d686cf 100644
--- a/client/src/components/Collections/SaveToCollectionModal.tsx
+++ b/client/src/components/Collections/SaveToCollectionModal.tsx
@@ -59,7 +59,7 @@ export default function SaveToCollectionModal(): React.ReactElement | null {
     let cancelled = false
     setLoading(true)
     setMembership(null)
-    Promise.all([collectionsApi.list().catch(() => ({ collections: [], incomingInvites: [] })), membershipQuery ? collectionsApi.membership(membershipQuery).catch(() => ({ saved: false, lists: [] as CollectionMembership['lists'] })) : Promise.resolve({ saved: false, lists: [] as CollectionMembership['lists'] })])
+    void Promise.all([collectionsApi.list().catch(() => ({ collections: [], incomingInvites: [] })), membershipQuery ? collectionsApi.membership(membershipQuery).catch(() => ({ saved: false, lists: [] as CollectionMembership['lists'] })) : Promise.resolve({ saved: false, lists: [] as CollectionMembership['lists'] })])
       .then(([listRes, m]) => {
         if (cancelled) return
         setLists(listRes.collections)
diff --git a/client/src/components/Dashboard/CollectionsWidget.tsx b/client/src/components/Dashboard/CollectionsWidget.tsx
index ea8963c2f..7ed605957 100644
--- a/client/src/components/Dashboard/CollectionsWidget.tsx
+++ b/client/src/components/Dashboard/CollectionsWidget.tsx
@@ -21,7 +21,7 @@ export default function CollectionsWidget({ onOpen }: { onOpen: () => void }): R
 
   useEffect(() => {
     let cancelled = false
-    ;(async () => {
+    ;void (async () => {
       try {
         const data = await collectionsApi.list()
         if (!cancelled) setLists(data.collections)
diff --git a/client/src/components/Files/FileManagerAssignModal.tsx b/client/src/components/Files/FileManagerAssignModal.tsx
index a2a41cfa2..326467bfa 100644
--- a/client/src/components/Files/FileManagerAssignModal.tsx
+++ b/client/src/components/Files/FileManagerAssignModal.tsx
@@ -36,7 +36,7 @@ export function AssignModal(S: FileManagerState) {
               const val = e.target.value.trim()
               const file = files.find(f => f.id === assignFileId)
               if (file && val !== (file.description || '')) {
-                handleAssign(file.id, { description: val } as any)
+                void handleAssign(file.id, { description: val } as any)
               }
             }}
             onKeyDown={e => { if (e.key === 'Enter') (e.target as HTMLInputElement).blur() }}
diff --git a/client/src/components/Files/FileManagerAuthedImg.tsx b/client/src/components/Files/FileManagerAuthedImg.tsx
index bdc883909..0a64d6b9f 100644
--- a/client/src/components/Files/FileManagerAuthedImg.tsx
+++ b/client/src/components/Files/FileManagerAuthedImg.tsx
@@ -5,7 +5,7 @@ import { getAuthUrl } from '../../api/authUrl'
 export function AuthedImg({ src, style }: { src: string; style?: React.CSSProperties }) {
   const [authSrc, setAuthSrc] = useState('')
   useEffect(() => {
-    getAuthUrl(src, 'download').then(setAuthSrc)
+    void getAuthUrl(src, 'download').then(setAuthSrc)
   }, [src])
   return authSrc ? <img src={authSrc} alt="" style={style} /> : null
 }
diff --git a/client/src/components/Files/FileManagerImageLightbox.tsx b/client/src/components/Files/FileManagerImageLightbox.tsx
index 26156e5a4..e66b6dee4 100644
--- a/client/src/components/Files/FileManagerImageLightbox.tsx
+++ b/client/src/components/Files/FileManagerImageLightbox.tsx
@@ -168,7 +168,7 @@ function ThumbImg({ file, active, onClick }: { file: TripFile & { url: string };
   useEffect(() => {
     if (!visible || fileIsVideo) return
     let current = true
-    getAuthUrl(file.url, 'download').then(u => { if (current) setSrc(u) })
+    void getAuthUrl(file.url, 'download').then(u => { if (current) setSrc(u) })
     return () => { current = false }
   }, [file.url, fileIsVideo, visible])
 
diff --git a/client/src/components/Files/useFileManager.ts b/client/src/components/Files/useFileManager.ts
index 590a8702f..28f50db37 100644
--- a/client/src/components/Files/useFileManager.ts
+++ b/client/src/components/Files/useFileManager.ts
@@ -64,7 +64,7 @@ export function useFileManager({ files = [], onUpload, onDelete, onUpdate, place
 
   // onUpdate doubles as the "files changed" signal towards the parent; the arguments carry no payload.
   const refreshFiles = useCallback(async () => {
-    if (onUpdate) onUpdate(0, {} as any)
+    if (onUpdate) void onUpdate(0, {} as any)
   }, [onUpdate])
 
   const handleStar = async (fileId: number) => {
@@ -185,7 +185,7 @@ export function useFileManager({ files = [], onUpload, onDelete, onUpdate, place
 
   useEffect(() => {
     if (previewFile) {
-      getAuthUrl(previewFile.url, 'download').then(setPreviewFileUrl)
+      void getAuthUrl(previewFile.url, 'download').then(setPreviewFileUrl)
     } else {
       setPreviewFileUrl('')
     }
diff --git a/client/src/components/Journey/JourneyDetailPageEntryEditor.tsx b/client/src/components/Journey/JourneyDetailPageEntryEditor.tsx
index 3321c9fc5..8d0a7fa5b 100644
--- a/client/src/components/Journey/JourneyDetailPageEntryEditor.tsx
+++ b/client/src/components/Journey/JourneyDetailPageEntryEditor.tsx
@@ -232,7 +232,7 @@ export function EntryEditor({ entry, journeyId, tripDates, galleryPhotos, trips,
     // The discovery is not tied to the open tab, so the result is applied even if
     // the user left the tab meanwhile — dropping it would leave providersLoading
     // stuck and block every later run of this effect.
-    ;(async () => {
+    ;void (async () => {
       try {
         const addonsData = await addonsApi.enabled()
         const enabled = (addonsData.addons || []).filter((a: any) => a.type === 'photo_provider' && a.enabled)
diff --git a/client/src/components/Journey/JourneyDetailPageProviderPicker.tsx b/client/src/components/Journey/JourneyDetailPageProviderPicker.tsx
index 681460e99..435e5af3a 100644
--- a/client/src/components/Journey/JourneyDetailPageProviderPicker.tsx
+++ b/client/src/components/Journey/JourneyDetailPageProviderPicker.tsx
@@ -184,18 +184,18 @@ export function ProviderPicker({
   // load on mount / filter change
   useEffect(() => {
     if (filter === 'day' && initialDate) {
-      searchPhotos(initialDate, initialDate);
+      void searchPhotos(initialDate, initialDate);
     } else if (filter === 'trip' && tripRange.from && tripRange.to) {
-      searchPhotos(tripRange.from, tripRange.to);
+      void searchPhotos(tripRange.from, tripRange.to);
     } else if (filter === 'all') {
-      searchPhotos('', '');
+      void searchPhotos('', '');
     } else if (filter === 'album' && albums.length === 0) {
-      loadAlbums();
+      void loadAlbums();
     }
   }, [filter]);
 
   const handleCustomSearch = () => {
-    if (customFrom && customTo) searchPhotos(customFrom, customTo);
+    if (customFrom && customTo) void searchPhotos(customFrom, customTo);
   };
 
   // Sorted here rather than in the two fetches above. contextLocation is live
@@ -224,7 +224,7 @@ export function ProviderPicker({
 
   const loadMorePhotos = () => {
     if (loadingMore || !canLoadMore) return;
-    searchPhotos(searchFrom, searchTo, searchPage + 1, true);
+    void searchPhotos(searchFrom, searchTo, searchPage + 1, true);
   };
 
   const selectionEntry = (asset: PickerAsset | undefined): SelectedAsset => ({
@@ -462,7 +462,7 @@ export function ProviderPicker({
                       onClick={() => {
                         setSelectedAlbum(a.id);
                         setSelectedAlbumPassphrase(a.passphrase);
-                        loadAlbumPhotos(a);
+                        void loadAlbumPhotos(a);
                       }}
                       className={`flex-shrink-0 rounded-lg border px-2.5 py-1 text-[11px] font-medium whitespace-nowrap ${
                         selectedAlbum === a.id
diff --git a/client/src/components/Journey/JourneyDetailPageSettingsDialog.tsx b/client/src/components/Journey/JourneyDetailPageSettingsDialog.tsx
index c22542ff6..f723e4228 100644
--- a/client/src/components/Journey/JourneyDetailPageSettingsDialog.tsx
+++ b/client/src/components/Journey/JourneyDetailPageSettingsDialog.tsx
@@ -308,7 +308,7 @@ export function JourneySettingsDialog({ journey, onClose, onSaved, onOpenInvite,
                   </span>
                   <ToggleSwitch
                     on={!!journey.show_trip_tracks}
-                    onToggle={() => { if (!savingTracks) handleTracksToggle() }}
+                    onToggle={() => { if (!savingTracks) void handleTracksToggle() }}
                     label={t('journey.settings.showTripTracks')}
                   />
                 </div>
@@ -345,7 +345,7 @@ export function JourneySettingsDialog({ journey, onClose, onSaved, onOpenInvite,
                     <span className="min-w-0 flex-1 text-content" style={fs(13, 'body')}>{label}</span>
                     <ToggleSwitch
                       on={journey[field] !== 0}
-                      onToggle={() => { if (savingField === null) handleFieldToggle(field) }}
+                      onToggle={() => { if (savingField === null) void handleFieldToggle(field) }}
                       label={label}
                     />
                   </div>
diff --git a/client/src/components/Layout/OfflineBanner.tsx b/client/src/components/Layout/OfflineBanner.tsx
index bdb89e9b8..1fe915c17 100644
--- a/client/src/components/Layout/OfflineBanner.tsx
+++ b/client/src/components/Layout/OfflineBanner.tsx
@@ -41,7 +41,7 @@ export default function OfflineBanner(): React.ReactElement | null {
         setConflictCount(conflicts)
       }
     }
-    poll()
+    void poll()
     const id = setInterval(poll, POLL_MS)
     return () => { cancelled = true; clearInterval(id) }
   }, [])
diff --git a/client/src/components/Packing/PackingListPanelBagModal.tsx b/client/src/components/Packing/PackingListPanelBagModal.tsx
index ee44623c9..355a680d8 100644
--- a/client/src/components/Packing/PackingListPanelBagModal.tsx
+++ b/client/src/components/Packing/PackingListPanelBagModal.tsx
@@ -78,7 +78,7 @@ export function BagModal(S: PackingState) {
         {canEdit && (showAddBag ? (
           <div style={{ display: 'flex', gap: 6, marginTop: 14 }}>
             <input autoFocus value={newBagName} onChange={e => setNewBagName(e.target.value)}
-              onKeyDown={e => { if (e.key === 'Enter') handleCreateBag(); if (e.key === 'Escape') { setShowAddBag(false); setNewBagName('') } }}
+              onKeyDown={e => { if (e.key === 'Enter') void handleCreateBag(); if (e.key === 'Escape') { setShowAddBag(false); setNewBagName('') } }}
               placeholder={t('packing.bagName')}
               style={{ flex: 1, padding: '8px 12px', borderRadius: 10, border: '1px solid var(--border-primary)', fontSize: 'calc(13px * var(--fs-scale-body, 1))', fontFamily: 'inherit', outline: 'none' }} />
             <button type="button" onClick={handleCreateBag} disabled={!newBagName.trim()}
diff --git a/client/src/components/Packing/PackingListPanelBagSidebar.tsx b/client/src/components/Packing/PackingListPanelBagSidebar.tsx
index 466c492db..2054e586c 100644
--- a/client/src/components/Packing/PackingListPanelBagSidebar.tsx
+++ b/client/src/components/Packing/PackingListPanelBagSidebar.tsx
@@ -55,7 +55,7 @@ export function BagSidebar(S: PackingState) {
           <div ref={composerRef} style={{ ...COMPOSER, margin: '10px 10px 0', padding: '4px 4px 4px 10px' }}>
             <span aria-hidden style={{ width: 10, height: 10, borderRadius: '50%', border: '1.5px dashed var(--text-faint)', flexShrink: 0 }} />
             <input autoFocus value={newBagName} onChange={e => setNewBagName(e.target.value)}
-              onKeyDown={e => { if (e.key === 'Enter') handleCreateBag(); if (e.key === 'Escape') closeComposer() }}
+              onKeyDown={e => { if (e.key === 'Enter') void handleCreateBag(); if (e.key === 'Escape') closeComposer() }}
               placeholder={t('packing.bagName')}
               style={{ flex: 1, minWidth: 0, padding: '5px 0', border: 'none', fontSize: 'calc(12.5px * var(--fs-scale-body, 1))', fontWeight: 500, fontFamily: 'inherit', outline: 'none', color: 'var(--text-primary)', background: 'transparent' }} />
             <button type="button" onClick={handleCreateBag} disabled={!newBagName.trim()} aria-label={t('common.add')} style={composerConfirm(!!newBagName.trim())}>
diff --git a/client/src/components/Planner/PlaceFormModal.tsx b/client/src/components/Planner/PlaceFormModal.tsx
index 58ce9bc24..f3c06c6a8 100644
--- a/client/src/components/Planner/PlaceFormModal.tsx
+++ b/client/src/components/Planner/PlaceFormModal.tsx
@@ -634,10 +634,10 @@ function usePlaceFormModal(props: PlaceFormModalProps) {
       } else if (e.key === 'Enter') {
         e.preventDefault()
         if (acHighlight >= 0) {
-          handleSelectSuggestion(acSuggestions[acHighlight])
+          void handleSelectSuggestion(acSuggestions[acHighlight])
         } else {
           setAcSuggestions([])
-          handleMapsSearch()
+          void handleMapsSearch()
         }
       } else if (e.key === 'Escape') {
         // Spent on the list: the dialog leaves an Escape that was already
@@ -648,7 +648,7 @@ function usePlaceFormModal(props: PlaceFormModalProps) {
       }
     } else if (e.key === 'Enter') {
       e.preventDefault()
-      handleMapsSearch()
+      void handleMapsSearch()
     }
   }
 
@@ -1056,7 +1056,7 @@ export default function PlaceFormModal(props: PlaceFormModalProps) {
                   <Tooltip label={t('common.search')}>
                     <button
                       type="button"
-                      onClick={() => { setAcSuggestions([]); handleMapsSearch() }}
+                      onClick={() => { setAcSuggestions([]); void handleMapsSearch() }}
                       disabled={isSearchingMaps}
                       aria-label={t('common.search')}
                       className={`${SIDE_BUTTON} bg-accent text-accent-text hover:opacity-90`}
diff --git a/client/src/components/Planner/PlacesSidebarListImportModal.tsx b/client/src/components/Planner/PlacesSidebarListImportModal.tsx
index a1aaa3641..8dd8fdaaf 100644
--- a/client/src/components/Planner/PlacesSidebarListImportModal.tsx
+++ b/client/src/components/Planner/PlacesSidebarListImportModal.tsx
@@ -79,7 +79,7 @@ export function ListImportModal(S: SidebarState) {
           type="text"
           value={listImportUrl}
           onChange={e => setListImportUrl(e.target.value)}
-          onKeyDown={e => { if (e.key === 'Enter' && !listImportLoading) handleListImport() }}
+          onKeyDown={e => { if (e.key === 'Enter' && !listImportLoading) void handleListImport() }}
           placeholder={google ? 'https://maps.app.goo.gl/...' : 'https://naver.me/...'}
           autoFocus
           className={INPUT}
diff --git a/client/src/components/Planner/ReservationModal.tsx b/client/src/components/Planner/ReservationModal.tsx
index cf11e4c3b..755dbeb3a 100644
--- a/client/src/components/Planner/ReservationModal.tsx
+++ b/client/src/components/Planner/ReservationModal.tsx
@@ -332,8 +332,8 @@ export function ReservationModal({ isOpen, onClose, onSave, reservation, days, p
     }
   }
 
-  const handleCreateExpense = () => { expenseIntentRef.current = { create: true }; handleSubmit() }
-  const handleEditExpense = (item: BudgetItem) => { expenseIntentRef.current = { editItem: item }; handleSubmit() }
+  const handleCreateExpense = () => { expenseIntentRef.current = { create: true }; void handleSubmit() }
+  const handleEditExpense = (item: BudgetItem) => { expenseIntentRef.current = { editItem: item }; void handleSubmit() }
   const handleRemoveExpense = async (item: BudgetItem) => {
     try { await deleteBudgetItem(Number(tripId), item.id) } catch { toast.error(t('common.unknownError')) }
   }
diff --git a/client/src/components/Planner/TransportModal.tsx b/client/src/components/Planner/TransportModal.tsx
index 98bbebeaa..8aed3a65a 100644
--- a/client/src/components/Planner/TransportModal.tsx
+++ b/client/src/components/Planner/TransportModal.tsx
@@ -648,8 +648,8 @@ export function TransportModal({ isOpen, onClose, onSave, reservation, days, sel
     }
   }
 
-  const handleCreateExpense = () => { expenseIntentRef.current = { create: true }; handleSubmit() }
-  const handleEditExpense = (item: BudgetItem) => { expenseIntentRef.current = { editItem: item }; handleSubmit() }
+  const handleCreateExpense = () => { expenseIntentRef.current = { create: true }; void handleSubmit() }
+  const handleEditExpense = (item: BudgetItem) => { expenseIntentRef.current = { editItem: item }; void handleSubmit() }
   const handleRemoveExpense = async (item: BudgetItem) => {
     try { await deleteBudgetItem(Number(tripId), item.id) } catch { toast.error(t('common.unknownError')) }
   }
diff --git a/client/src/components/Settings/ApiKeysSection.tsx b/client/src/components/Settings/ApiKeysSection.tsx
index fb0ea005f..6e25010f3 100644
--- a/client/src/components/Settings/ApiKeysSection.tsx
+++ b/client/src/components/Settings/ApiKeysSection.tsx
@@ -306,7 +306,7 @@ export default function ApiKeysSection(): React.ReactElement {
                 {t('settings.apiKeys.modal.name')}
               </label>
               <input id="api-key-name" type="text" value={newName} onChange={e => setNewName(e.target.value)}
-                onKeyDown={e => { if (e.key === 'Enter') handleCreate() }}
+                onKeyDown={e => { if (e.key === 'Enter') void handleCreate() }}
                 placeholder={t('settings.apiKeys.modal.namePlaceholder')}
                 maxLength={100}
                 className="w-full rounded-lg border px-3 py-2.5 text-body focus:outline-none focus:ring-2 ring-accent border-edge bg-surface-input text-content"
@@ -343,7 +343,7 @@ export default function ApiKeysSection(): React.ReactElement {
       <ConfirmDialog
         isOpen={deleteId !== null}
         onClose={() => setDeleteId(null)}
-        onConfirm={() => { if (deleteId !== null) handleDelete(deleteId) }}
+        onConfirm={() => { if (deleteId !== null) void handleDelete(deleteId) }}
         title={t('settings.apiKeys.deleteTitle')}
         message={t('settings.apiKeys.deleteMessage')}
         confirmLabel={t('settings.apiKeys.deleteTitle')}
diff --git a/client/src/components/Settings/IntegrationsTab.tsx b/client/src/components/Settings/IntegrationsTab.tsx
index 4310717a9..83f6b31bf 100644
--- a/client/src/components/Settings/IntegrationsTab.tsx
+++ b/client/src/components/Settings/IntegrationsTab.tsx
@@ -234,7 +234,7 @@ function useIntegrations() {
   }
 
   const handleCopy = (text: string, key: string) => {
-    navigator.clipboard.writeText(text).then(() => {
+    void navigator.clipboard.writeText(text).then(() => {
       setCopiedKey(key)
       if (copyTimerRef.current) clearTimeout(copyTimerRef.current)
       copyTimerRef.current = setTimeout(() => setCopiedKey(null), 2000)
diff --git a/client/src/components/Settings/PasskeysSection.tsx b/client/src/components/Settings/PasskeysSection.tsx
index a6db0329b..77d0fb405 100644
--- a/client/src/components/Settings/PasskeysSection.tsx
+++ b/client/src/components/Settings/PasskeysSection.tsx
@@ -138,7 +138,7 @@ export default function PasskeysSection({ demoMode }: { demoMode?: boolean }): R
                         type="text"
                         value={renameVal}
                         onChange={e => setRenameVal(e.target.value)}
-                        onKeyDown={e => { if (e.key === 'Enter') handleRename(c.id); if (e.key === 'Escape') setRenamingId(null) }}
+                        onKeyDown={e => { if (e.key === 'Enter') void handleRename(c.id); if (e.key === 'Escape') setRenamingId(null) }}
                         className="flex-1 px-2 py-1 border border-slate-300 rounded text-sm"
                       />
                       <button type="button" onClick={() => handleRename(c.id)} className="p-1 text-emerald-600" aria-label={t('common.save')}><Check size={16} /></button>
diff --git a/client/src/components/Todo/TodoListPanel.tsx b/client/src/components/Todo/TodoListPanel.tsx
index f2cef6dd2..d69377337 100644
--- a/client/src/components/Todo/TodoListPanel.tsx
+++ b/client/src/components/Todo/TodoListPanel.tsx
@@ -485,7 +485,7 @@ function NewTaskPane({ tripId, categories, members, defaultCategory, onCreated,
 
       <div style={FORM_BODY}>
         <input autoFocus value={name} onChange={e => setName(e.target.value)}
-          onKeyDown={e => { if (e.key === 'Enter' && name.trim()) create() }}
+          onKeyDown={e => { if (e.key === 'Enter' && name.trim()) void create() }}
           style={{ ...taskInputStyle, fontSize: 'calc(15px * var(--fs-scale-subtitle, 1))', fontWeight: 600 }}
           placeholder={t('todo.namePlaceholder')} />
         <TodoTaskFields values={fields} onChange={patch => setFields(f => ({ ...f, ...patch }))} categories={categories} members={members} />
diff --git a/client/src/components/Trips/TripFormModal.tsx b/client/src/components/Trips/TripFormModal.tsx
index de7224c30..83198335f 100644
--- a/client/src/components/Trips/TripFormModal.tsx
+++ b/client/src/components/Trips/TripFormModal.tsx
@@ -258,7 +258,7 @@ export default function TripFormModal({ isOpen, onClose, onSave, trip, onCoverUp
     setPendingUnsplashUrl(null)
     if (isEditing && trip?.id) {
       // Existing trip: upload immediately
-      uploadCoverNow(normalized)
+      void uploadCoverNow(normalized)
     } else {
       // New trip: stage for upload after creation
       setPendingCoverFile(normalized)
@@ -269,7 +269,7 @@ export default function TripFormModal({ isOpen, onClose, onSave, trip, onCoverUp
   }
 
   const handleCoverChange = (e: React.ChangeEvent<HTMLInputElement>) => {
-    handleCoverSelect(e.target.files?.[0])
+    void handleCoverSelect(e.target.files?.[0])
     e.target.value = ''
   }
 
@@ -361,7 +361,7 @@ export default function TripFormModal({ isOpen, onClose, onSave, trip, onCoverUp
       if (item.type.startsWith('image/')) {
         e.preventDefault()
         const file = item.getAsFile()
-        if (file) handleCoverSelect(file)
+        if (file) void handleCoverSelect(file)
         return
       }
     }
@@ -488,7 +488,7 @@ export default function TripFormModal({ isOpen, onClose, onSave, trip, onCoverUp
             <button type="button" onClick={() => fileRef.current?.click()} disabled={uploadingCover}
               onDragOver={e => { e.preventDefault(); setCoverDragActive(true) }}
               onDragLeave={() => setCoverDragActive(false)}
-              onDrop={e => { e.preventDefault(); setCoverDragActive(false); const file = e.dataTransfer.files?.[0]; if (file?.type.startsWith('image/')) handleCoverSelect(file) }}
+              onDrop={e => { e.preventDefault(); setCoverDragActive(false); const file = e.dataTransfer.files?.[0]; if (file?.type.startsWith('image/')) void handleCoverSelect(file) }}
               className={`w-full h-[130px] px-4 border-2 border-dashed rounded-xl flex items-center justify-center gap-1.5 text-body transition-colors ${
                 coverDragActive
                   ? 'border-accent bg-accent-subtle text-content'
@@ -502,7 +502,7 @@ export default function TripFormModal({ isOpen, onClose, onSave, trip, onCoverUp
               type="text"
               value={coverSearchQuery}
               onChange={e => setCoverSearchQuery(e.target.value)}
-              onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); handleCoverSearch() } }}
+              onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); void handleCoverSearch() } }}
               placeholder={t('dashboard.unsplashSearchPlaceholder')}
               className={inputCls}
             />
diff --git a/client/src/components/Vacay/VacayCalendar.tsx b/client/src/components/Vacay/VacayCalendar.tsx
index b974b9913..ca7fc384d 100644
--- a/client/src/components/Vacay/VacayCalendar.tsx
+++ b/client/src/components/Vacay/VacayCalendar.tsx
@@ -31,7 +31,7 @@ export default function VacayCalendar() {
 
   useEffect(() => {
     let cancelled = false
-    ;(async () => {
+    ;void (async () => {
       try {
         const data = await tripsApi.list()
         const dates = new Set<string>()
diff --git a/client/src/components/Vacay/VacayPersons.tsx b/client/src/components/Vacay/VacayPersons.tsx
index 33389b556..75454c71e 100644
--- a/client/src/components/Vacay/VacayPersons.tsx
+++ b/client/src/components/Vacay/VacayPersons.tsx
@@ -73,7 +73,7 @@ export default function VacayPersons() {
     <div className="vg-card rounded-[22px]" style={{ padding: '14px 18px' }}>
       <div className="flex items-center justify-between mb-2">
         <span style={{ fontSize: 11, fontWeight: 600, textTransform: 'uppercase', letterSpacing: '0.14em', color: 'var(--vg-ink3)' }}>{t('vacay.persons')}</span>
-        <button type="button" onClick={() => { setShowInvite(true); loadAvailable() }}
+        <button type="button" onClick={() => { setShowInvite(true); void loadAvailable() }}
           className="w-7 h-7 rounded-lg flex items-center justify-center transition-colors"
           style={{ color: 'var(--vg-ink3)' }}>
           <UserPlus size={15} />
diff --git a/client/src/components/Vacay/VacaySharedCalendars.tsx b/client/src/components/Vacay/VacaySharedCalendars.tsx
index 1edf0151c..454774eda 100644
--- a/client/src/components/Vacay/VacaySharedCalendars.tsx
+++ b/client/src/components/Vacay/VacaySharedCalendars.tsx
@@ -64,7 +64,7 @@ export default function VacaySharedCalendars() {
     <div className="vg-card rounded-[22px]" style={{ padding: '14px 18px' }}>
       <div className="flex items-center justify-between mb-2">
         <span style={{ fontSize: 11, fontWeight: 600, textTransform: 'uppercase', letterSpacing: '0.14em', color: 'var(--vg-ink3)' }}>{t('vacay.sharedCalendars')}</span>
-        <button type="button" onClick={() => { setShowShare(true); loadAvailable() }}
+        <button type="button" onClick={() => { setShowShare(true); void loadAvailable() }}
           className="w-7 h-7 rounded-lg flex items-center justify-center transition-colors"
           style={{ color: 'var(--vg-ink3)' }}
           title={t('vacay.shareCalendar')}>
diff --git a/client/src/components/Vacay/VacayStats.tsx b/client/src/components/Vacay/VacayStats.tsx
index 7a6c51a0b..3c401aaa2 100644
--- a/client/src/components/Vacay/VacayStats.tsx
+++ b/client/src/components/Vacay/VacayStats.tsx
@@ -118,7 +118,7 @@ function StatCard({ stat: s, isMe, canEdit, selectedYear, isShiftedYear, onSave,
     setEditing(false)
     const days = Number.parseInt(String(localDays))
     if (!Number.isNaN(days) && days >= 0 && days <= 365 && days !== s.vacation_days) {
-      onSave(selectedYear, days, s.user_id)
+      void onSave(selectedYear, days, s.user_id)
     }
   }
 
diff --git a/client/src/components/shared/SlidingTabs.tsx b/client/src/components/shared/SlidingTabs.tsx
index fab79e72b..c737b9f63 100644
--- a/client/src/components/shared/SlidingTabs.tsx
+++ b/client/src/components/shared/SlidingTabs.tsx
@@ -61,7 +61,7 @@ export function SlidingTabs<T extends string>({
     // Re-measure once web fonts settle — on a reload the first measure runs against
     // fallback-font metrics, so the (bold) active label reflows and the pill drifts.
     let cancelled = false
-    document.fonts?.ready?.then(() => {
+    void document.fonts?.ready?.then(() => {
       if (!cancelled) measure()
     })
 
diff --git a/client/src/hooks/useExchangeRates.ts b/client/src/hooks/useExchangeRates.ts
index c8e1ddd17..e78bc77fd 100644
--- a/client/src/hooks/useExchangeRates.ts
+++ b/client/src/hooks/useExchangeRates.ts
@@ -240,7 +240,7 @@ function useRatesFor(base: string | null): Record<string, number> | null {
     if (cached) setRates(cached.rates)
     if (cached && Date.now() - cached.ts < TTL_MS) return
     let cancelled = false
-    fetchExchangeRates(base).then(r => {
+    void fetchExchangeRates(base).then(r => {
       if (!cancelled && r) setRates(r)
     })
     return () => { cancelled = true }
diff --git a/client/src/main.tsx b/client/src/main.tsx
index 0b2a9f575..f190c8b68 100644
--- a/client/src/main.tsx
+++ b/client/src/main.tsx
@@ -38,10 +38,10 @@ import ErrorBoundary, { RootErrorFallback } from './components/shared/ErrorBound
 import { installGlobalErrorHandlers } from './utils/globalErrorHandlers'
 import { schedulePrecacheRepair } from './utils/serviceWorkerShell'
 
-maybeInstallTouchDragPolyfill()
+void maybeInstallTouchDragPolyfill()
 startConnectivityProbe()
 // Keep offline data (map tiles, file blobs, IndexedDB) exempt from eviction.
-requestPersistentStorage()
+void requestPersistentStorage()
 // Event handlers and async code never reach a boundary; this is where they land.
 installGlobalErrorHandlers()
 // A page the precache keeps under a stylesheet's or a script's name would be
diff --git a/client/src/mobile/screens/admin/MAdminAddonManager.tsx b/client/src/mobile/screens/admin/MAdminAddonManager.tsx
index ee35b87ff..ff1b9608a 100644
--- a/client/src/mobile/screens/admin/MAdminAddonManager.tsx
+++ b/client/src/mobile/screens/admin/MAdminAddonManager.tsx
@@ -97,7 +97,7 @@ export default function MAdminAddonManager({ bagTrackingEnabled, onToggleBagTrac
   const [loading, setLoading] = useState(true)
 
   useEffect(() => {
-    loadAddons().finally(() => setLoading(false))
+    void loadAddons().finally(() => setLoading(false))
   }, [])
 
   const loadAddons = async () => {
@@ -430,7 +430,7 @@ function LlmParsingConfig({ addon }: { addon: Addon }) {
 
   // Load installed models when the local provider is active.
   useEffect(() => {
-    if (provider === 'local') loadModels()
+    if (provider === 'local') void loadModels()
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [provider])
 
diff --git a/client/src/mobile/screens/admin/MAdminBackupPanel.tsx b/client/src/mobile/screens/admin/MAdminBackupPanel.tsx
index ce2478f44..0bbd96853 100644
--- a/client/src/mobile/screens/admin/MAdminBackupPanel.tsx
+++ b/client/src/mobile/screens/admin/MAdminBackupPanel.tsx
@@ -91,7 +91,7 @@ export default function MAdminBackupPanel() {
     } catch {}
   }
 
-  useEffect(() => { loadBackups(); loadAutoSettings() }, [])
+  useEffect(() => { void loadBackups(); void loadAutoSettings() }, [])
 
   const handleCreate = async () => {
     setIsCreating(true)
diff --git a/client/src/mobile/screens/admin/MAdminCategoryManager.tsx b/client/src/mobile/screens/admin/MAdminCategoryManager.tsx
index 5aa270229..856d73cac 100644
--- a/client/src/mobile/screens/admin/MAdminCategoryManager.tsx
+++ b/client/src/mobile/screens/admin/MAdminCategoryManager.tsx
@@ -29,7 +29,7 @@ export default function MAdminCategoryManager() {
   const toast = useToast()
   const { t } = useTranslation()
 
-  useEffect(() => { loadCategories() }, [])
+  useEffect(() => { void loadCategories() }, [])
 
   const loadCategories = async () => {
     setIsLoading(true)
diff --git a/client/src/mobile/screens/admin/MAdminDefaultUserSettings.tsx b/client/src/mobile/screens/admin/MAdminDefaultUserSettings.tsx
index 5ecc71bde..e20703d81 100644
--- a/client/src/mobile/screens/admin/MAdminDefaultUserSettings.tsx
+++ b/client/src/mobile/screens/admin/MAdminDefaultUserSettings.tsx
@@ -184,7 +184,7 @@ export default function MAdminDefaultUserSettings(): React.ReactElement {
       setMapboxStyle(nextStyle)
       patch[styleSettingKey(nextProvider)] = nextStyle
     }
-    save(patch)
+    void save(patch)
   }
 
   // No active value when the setting is unset → segmented shows no pill, matching
@@ -391,7 +391,7 @@ export default function MAdminDefaultUserSettings(): React.ReactElement {
                   onBlur={() => {
                     const nextStyle = normalizeStyleForProvider(mapProvider, mapboxStyle)
                     setMapboxStyle(nextStyle)
-                    save({ [styleKey]: nextStyle })
+                    void save({ [styleKey]: nextStyle })
                   }}
                   placeholder={defaultStyleForProvider(mapProvider)}
                 />
@@ -433,7 +433,7 @@ export default function MAdminDefaultUserSettings(): React.ReactElement {
         onClose={() => setCurrencyOpen(false)}
         title={t('settings.currency')}
         value={defaults.default_currency || ''}
-        onSelect={(value) => { if (value) save({ default_currency: value }) }}
+        onSelect={(value) => { if (value) void save({ default_currency: value }) }}
         options={currenciesWith(defaults.default_currency).map((c) => ({ value: c, label: SYMBOLS[c] ? `${c}  ${SYMBOLS[c]}` : c }))}
       />
 
@@ -442,7 +442,7 @@ export default function MAdminDefaultUserSettings(): React.ReactElement {
         onClose={() => setPresetOpen(false)}
         title={t('settings.mapTemplate')}
         value={mapTileUrl}
-        onSelect={(value) => { if (value) { setMapTileUrl(value); save({ map_tile_url: value }) } }}
+        onSelect={(value) => { if (value) { setMapTileUrl(value); void save({ map_tile_url: value }) } }}
         options={MAP_PRESETS.map((p) => ({ value: p.url, label: p.name }))}
       />
 
@@ -451,7 +451,7 @@ export default function MAdminDefaultUserSettings(): React.ReactElement {
         onClose={() => setStyleOpen(false)}
         title={t('admin.defaultSettings.mapboxStyle')}
         value={mapboxStyle}
-        onSelect={(value) => { if (value) { setMapboxStyle(value); save({ [styleKey]: value }) } }}
+        onSelect={(value) => { if (value) { setMapboxStyle(value); void save({ [styleKey]: value }) } }}
         options={glStylePresets.map((p) => ({ value: p.url, label: p.name }))}
       />
     </div>
diff --git a/client/src/mobile/screens/admin/MAdminGitHubPanel.tsx b/client/src/mobile/screens/admin/MAdminGitHubPanel.tsx
index 3c9e2d0ee..b78e17c80 100644
--- a/client/src/mobile/screens/admin/MAdminGitHubPanel.tsx
+++ b/client/src/mobile/screens/admin/MAdminGitHubPanel.tsx
@@ -77,7 +77,7 @@ export default function MAdminGitHubPanel({ isPrerelease = false }: { isPrerelea
 
   useEffect(() => {
     setLoading(true)
-    loadFrom(1, false).finally(() => setLoading(false))
+    void loadFrom(1, false).finally(() => setLoading(false))
   }, [])
 
   const handleLoadMore = async () => {
diff --git a/client/src/mobile/screens/admin/MAdminPackingTemplateManager.tsx b/client/src/mobile/screens/admin/MAdminPackingTemplateManager.tsx
index 406f26da7..f58c09d33 100644
--- a/client/src/mobile/screens/admin/MAdminPackingTemplateManager.tsx
+++ b/client/src/mobile/screens/admin/MAdminPackingTemplateManager.tsx
@@ -84,7 +84,7 @@ export default function MAdminPackingTemplateManager() {
   const toast = useToast()
   const { t } = useTranslation()
 
-  useEffect(() => { loadTemplates() }, [])
+  useEffect(() => { void loadTemplates() }, [])
 
   const loadTemplates = async () => {
     setIsLoading(true)
@@ -216,7 +216,7 @@ export default function MAdminPackingTemplateManager() {
               autoFocus
               value={createName}
               onChange={e => setCreateName(e.target.value)}
-              onKeyDown={e => { if (e.key === 'Enter') handleCreateTemplate(); if (e.key === 'Escape') setShowCreate(false) }}
+              onKeyDown={e => { if (e.key === 'Enter') void handleCreateTemplate(); if (e.key === 'Escape') setShowCreate(false) }}
               placeholder={t('admin.packingTemplates.namePlaceholder')}
             />
           </div>
@@ -254,7 +254,7 @@ export default function MAdminPackingTemplateManager() {
                       value={editTemplateName}
                       onChange={e => setEditTemplateName(e.target.value)}
                       onBlur={() => handleRenameTemplate(tmpl.id)}
-                      onKeyDown={e => { if (e.key === 'Enter') handleRenameTemplate(tmpl.id); if (e.key === 'Escape') setEditingTemplate(null) }}
+                      onKeyDown={e => { if (e.key === 'Enter') void handleRenameTemplate(tmpl.id); if (e.key === 'Escape') setEditingTemplate(null) }}
                     />
                   </div>
                 ) : (
@@ -292,7 +292,7 @@ export default function MAdminPackingTemplateManager() {
                                 value={editCatName}
                                 onChange={e => setEditCatName(e.target.value)}
                                 onBlur={() => handleRenameCategory(cat.id)}
-                                onKeyDown={e => { if (e.key === 'Enter') handleRenameCategory(cat.id); if (e.key === 'Escape') setEditingCatId(null) }}
+                                onKeyDown={e => { if (e.key === 'Enter') void handleRenameCategory(cat.id); if (e.key === 'Escape') setEditingCatId(null) }}
                               />
                             </div>
                           ) : (
@@ -329,7 +329,7 @@ export default function MAdminPackingTemplateManager() {
                                         autoFocus
                                         value={editItemName}
                                         onChange={e => setEditItemName(e.target.value)}
-                                        onKeyDown={e => { if (e.key === 'Enter') handleRenameItem(item.id); if (e.key === 'Escape') setEditingItemId(null) }}
+                                        onKeyDown={e => { if (e.key === 'Enter') void handleRenameItem(item.id); if (e.key === 'Escape') setEditingItemId(null) }}
                                       />
                                     </div>
                                     <PkIconBtn size={28} variant="accent" ariaLabel={t('common.save')} onClick={() => handleRenameItem(item.id)}><Check size={13} /></PkIconBtn>
@@ -361,7 +361,7 @@ export default function MAdminPackingTemplateManager() {
                                   ref={addItemRef}
                                   value={newItemName}
                                   onChange={e => setNewItemName(e.target.value)}
-                                  onKeyDown={e => { if (e.key === 'Enter' && newItemName.trim()) handleAddItem(cat.id); if (e.key === 'Escape') { setAddingItemToCatId(null); setNewItemName('') } }}
+                                  onKeyDown={e => { if (e.key === 'Enter' && newItemName.trim()) void handleAddItem(cat.id); if (e.key === 'Escape') { setAddingItemToCatId(null); setNewItemName('') } }}
                                   placeholder={t('admin.packingTemplates.itemName')}
                                   className={inlineFieldCls}
                                 />
@@ -383,7 +383,7 @@ export default function MAdminPackingTemplateManager() {
                           autoFocus
                           value={newCatName}
                           onChange={e => setNewCatName(e.target.value)}
-                          onKeyDown={e => { if (e.key === 'Enter') handleAddCategory(); if (e.key === 'Escape') { setAddingCategory(false); setNewCatName('') } }}
+                          onKeyDown={e => { if (e.key === 'Enter') void handleAddCategory(); if (e.key === 'Escape') { setAddingCategory(false); setNewCatName('') } }}
                           placeholder={t('admin.packingTemplates.categoryName')}
                         />
                       </div>
diff --git a/client/src/mobile/screens/admin/MAdminPermissionsPanel.tsx b/client/src/mobile/screens/admin/MAdminPermissionsPanel.tsx
index fff021a89..4a6a98299 100644
--- a/client/src/mobile/screens/admin/MAdminPermissionsPanel.tsx
+++ b/client/src/mobile/screens/admin/MAdminPermissionsPanel.tsx
@@ -38,7 +38,7 @@ export default function MAdminPermissionsPanel(): React.ReactElement {
   const [dirty, setDirty] = useState(false)
 
   useEffect(() => {
-    loadPermissions()
+    void loadPermissions()
   }, [])
 
   const loadPermissions = async () => {
diff --git a/client/src/mobile/screens/admin/MAdminSheets.tsx b/client/src/mobile/screens/admin/MAdminSheets.tsx
index e3e743d6d..10460d7d4 100644
--- a/client/src/mobile/screens/admin/MAdminSheets.tsx
+++ b/client/src/mobile/screens/admin/MAdminSheets.tsx
@@ -178,7 +178,7 @@ export default function MAdminSheets({ admin, t }: MAdminSheetsProps) {
                     onClick={() => {
                       const user = editingUser
                       setEditingUser(null)
-                      handleDeleteUser(user)
+                      void handleDeleteUser(user)
                     }}
                   >
                     <Trash2 size={12} strokeWidth={2.2} />
diff --git a/client/src/mobile/screens/atlas/MAtlasBucketSheet.tsx b/client/src/mobile/screens/atlas/MAtlasBucketSheet.tsx
index 7eb6ea80a..15ad2865e 100644
--- a/client/src/mobile/screens/atlas/MAtlasBucketSheet.tsx
+++ b/client/src/mobile/screens/atlas/MAtlasBucketSheet.tsx
@@ -152,8 +152,8 @@ export default function MAtlasBucketSheet({ atlas, open, onClose }: MAtlasBucket
                   }}
                   onKeyDown={(e) => {
                     if (e.key !== 'Enter') return
-                    if (bucketForm.name) handleAddBucketItem()
-                    else handleBucketPoiSearch()
+                    if (bucketForm.name) void handleAddBucketItem()
+                    else void handleBucketPoiSearch()
                   }}
                   placeholder={t('atlas.bucketNamePlaceholder')}
                   className={`${inputCls} min-w-0 flex-1`}
diff --git a/client/src/mobile/screens/collections/MCollAddSheet.tsx b/client/src/mobile/screens/collections/MCollAddSheet.tsx
index e2ce4a006..1141a59e2 100644
--- a/client/src/mobile/screens/collections/MCollAddSheet.tsx
+++ b/client/src/mobile/screens/collections/MCollAddSheet.tsx
@@ -161,7 +161,7 @@ export default function MCollAddSheet({ open, collectionId, collectionName, list
           <input
             value={query}
             onChange={e => setQuery(e.target.value)}
-            onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); search() } }}
+            onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); void search() } }}
             placeholder={t('collections.addPlaceSearch')}
             className="min-w-0 flex-1 bg-transparent py-2 font-[inherit] text-[0.8125rem] text-m-ink outline-none placeholder:text-m-faint"
           />
diff --git a/client/src/mobile/screens/collections/MCollEditSheet.tsx b/client/src/mobile/screens/collections/MCollEditSheet.tsx
index 3105c297c..ab11a344d 100644
--- a/client/src/mobile/screens/collections/MCollEditSheet.tsx
+++ b/client/src/mobile/screens/collections/MCollEditSheet.tsx
@@ -204,7 +204,7 @@ export default function MCollEditSheet({ target, onClose, onCreated, onRequestDe
           <input
             value={coverQuery}
             onChange={e => setCoverQuery(e.target.value)}
-            onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); searchCover() } }}
+            onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); void searchCover() } }}
             placeholder={t('dashboard.unsplashSearchPlaceholder')}
             className="min-w-0 flex-1 rounded-[12px] border border-[color:var(--m-rowbr)] bg-[color:var(--m-sheet)] px-3 py-[10px] font-geist text-[0.71875rem] text-m-ink outline-none placeholder:text-m-faint"
           />
diff --git a/client/src/mobile/screens/collections/MCollLabelsSheet.tsx b/client/src/mobile/screens/collections/MCollLabelsSheet.tsx
index 9be1bbc84..2e376a654 100644
--- a/client/src/mobile/screens/collections/MCollLabelsSheet.tsx
+++ b/client/src/mobile/screens/collections/MCollLabelsSheet.tsx
@@ -101,7 +101,7 @@ export default function MCollLabelsSheet({
             <input
               value={name}
               onChange={e => setName(e.target.value)}
-              onKeyDown={e => { if (e.key === 'Enter') submit() }}
+              onKeyDown={e => { if (e.key === 'Enter') void submit() }}
               placeholder={t('collections.labels.namePlaceholder')}
               className={INPUT_CLS}
             />
diff --git a/client/src/mobile/screens/collections/MCollShareSheet.tsx b/client/src/mobile/screens/collections/MCollShareSheet.tsx
index 66d23fdd0..af43f00cf 100644
--- a/client/src/mobile/screens/collections/MCollShareSheet.tsx
+++ b/client/src/mobile/screens/collections/MCollShareSheet.tsx
@@ -98,7 +98,7 @@ export default function MCollShareSheet({
     if (collectionId == null) return
     const current = member.role ?? 'editor'
     const next = COLLECTION_ROLES[(COLLECTION_ROLES.indexOf(current) + 1) % COLLECTION_ROLES.length]
-    run(member.user_id, () => setMemberRole(collectionId, member.user_id, next))
+    void run(member.user_id, () => setMemberRole(collectionId, member.user_id, next))
   }
 
   const handleInvite = async () => {
diff --git a/client/src/mobile/screens/dashboard/MNewTripSheet.tsx b/client/src/mobile/screens/dashboard/MNewTripSheet.tsx
index ba13b88d5..5f89b172e 100644
--- a/client/src/mobile/screens/dashboard/MNewTripSheet.tsx
+++ b/client/src/mobile/screens/dashboard/MNewTripSheet.tsx
@@ -356,7 +356,7 @@ export default function MNewTripSheet({ open, trip, onClose, onSave, onCoverUpda
               type="file"
               accept="image/*"
               className="hidden"
-              onChange={e => { handleCoverFile(e.target.files?.[0]); e.target.value = '' }}
+              onChange={e => { void handleCoverFile(e.target.files?.[0]); e.target.value = '' }}
             />
             {coverPreview ? (
               <div className="relative h-[130px] overflow-hidden rounded-[16px]">
@@ -398,7 +398,7 @@ export default function MNewTripSheet({ open, trip, onClose, onSave, onCoverUpda
                 <input
                   value={searchQuery}
                   onChange={e => setSearchQuery(e.target.value)}
-                  onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); handleSearch() } }}
+                  onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); void handleSearch() } }}
                   placeholder={t('dashboard.unsplashSearchPlaceholder')}
                   className={`${inputCls} pt-0 text-[0.8125rem] font-medium`}
                 />
diff --git a/client/src/mobile/screens/journey/MJourneyDetail.tsx b/client/src/mobile/screens/journey/MJourneyDetail.tsx
index cf43f4771..326fd1a8f 100644
--- a/client/src/mobile/screens/journey/MJourneyDetail.tsx
+++ b/client/src/mobile/screens/journey/MJourneyDetail.tsx
@@ -262,7 +262,7 @@ export default function MJourneyDetail() {
 
   useEffect(() => {
     let active = true
-    ;(async () => {
+    ;void (async () => {
       try {
         const addonsData = await addonsApi.enabled()
         const enabled = (addonsData.addons || []).filter(
diff --git a/client/src/mobile/screens/journey/MJourneyEntrySheet.tsx b/client/src/mobile/screens/journey/MJourneyEntrySheet.tsx
index 2a54d0f19..101da4edc 100644
--- a/client/src/mobile/screens/journey/MJourneyEntrySheet.tsx
+++ b/client/src/mobile/screens/journey/MJourneyEntrySheet.tsx
@@ -160,7 +160,7 @@ export default function MJourneyEntrySheet({
     if (!addonsLoaded) return
     if (photoProviders.length === 0) { setProviders([]); return }
     let active = true
-    ;(async () => {
+    ;void (async () => {
       const connected: { id: string; name: string }[] = []
       for (const provider of photoProviders) {
         try {
diff --git a/client/src/mobile/screens/settings/MSettingsAccount.tsx b/client/src/mobile/screens/settings/MSettingsAccount.tsx
index 835fff019..f95ae217b 100644
--- a/client/src/mobile/screens/settings/MSettingsAccount.tsx
+++ b/client/src/mobile/screens/settings/MSettingsAccount.tsx
@@ -647,7 +647,7 @@ function MPasskeysCard({ demoMode }: { demoMode?: boolean }): React.ReactElement
                       value={renameVal}
                       onChange={(e) => setRenameVal(e.target.value)}
                       onKeyDown={(e) => {
-                        if (e.key === 'Enter') handleRename(c.id)
+                        if (e.key === 'Enter') void handleRename(c.id)
                         if (e.key === 'Escape') setRenamingId(null)
                       }}
                     />
diff --git a/client/src/mobile/screens/settings/MSettingsMcp.tsx b/client/src/mobile/screens/settings/MSettingsMcp.tsx
index 873837007..d9664069a 100644
--- a/client/src/mobile/screens/settings/MSettingsMcp.tsx
+++ b/client/src/mobile/screens/settings/MSettingsMcp.tsx
@@ -164,7 +164,7 @@ export default function MSettingsMcp() {
 }`
 
   const handleCopy = (text: string, key: string) => {
-    navigator.clipboard.writeText(text).then(() => {
+    void navigator.clipboard.writeText(text).then(() => {
       setCopiedKey(key)
       if (copyTimerRef.current) clearTimeout(copyTimerRef.current)
       copyTimerRef.current = setTimeout(() => setCopiedKey(null), 2000)
diff --git a/client/src/mobile/screens/settings/MSettingsPlugins.tsx b/client/src/mobile/screens/settings/MSettingsPlugins.tsx
index 4dee05e96..4e0171940 100644
--- a/client/src/mobile/screens/settings/MSettingsPlugins.tsx
+++ b/client/src/mobile/screens/settings/MSettingsPlugins.tsx
@@ -117,7 +117,7 @@ function PluginSettingsForm({ id, name, icon }: { id: string; name: string; icon
   const runAction = (a: PluginAction) => {
     // Danger actions confirm first (native sheet in place of window.confirm).
     if (a.danger) { setConfirmAction(a); return }
-    performAction(a)
+    void performAction(a)
   }
 
   const save = async () => {
@@ -258,7 +258,7 @@ function PluginSettingsForm({ id, name, icon }: { id: string; name: string; icon
         confirmLabel={confirmAction?.label}
         cancelLabel={t('common.cancel')}
         danger
-        onConfirm={() => { const a = confirmAction; setConfirmAction(null); if (a) performAction(a) }}
+        onConfirm={() => { const a = confirmAction; setConfirmAction(null); if (a) void performAction(a) }}
       />
     </>
   )
diff --git a/client/src/mobile/screens/trip/sheets/ImpListStep.tsx b/client/src/mobile/screens/trip/sheets/ImpListStep.tsx
index 2e7c77c9f..1f882417a 100644
--- a/client/src/mobile/screens/trip/sheets/ImpListStep.tsx
+++ b/client/src/mobile/screens/trip/sheets/ImpListStep.tsx
@@ -94,7 +94,7 @@ export default function ImpListStep({ planner, onBack, onDone }: ImpListStepProp
           onKeyDown={e => {
             if (e.key === 'Enter') {
               e.preventDefault()
-              handleImport()
+              void handleImport()
             }
           }}
           placeholder={provider === 'google' ? 'https://maps.app.goo.gl/…' : 'https://naver.me/…'}
diff --git a/client/src/mobile/screens/trip/sheets/MPlaceEditSheet.tsx b/client/src/mobile/screens/trip/sheets/MPlaceEditSheet.tsx
index 7acdaa165..9bd2eba64 100644
--- a/client/src/mobile/screens/trip/sheets/MPlaceEditSheet.tsx
+++ b/client/src/mobile/screens/trip/sheets/MPlaceEditSheet.tsx
@@ -482,7 +482,7 @@ export default function MPlaceEditSheet({ planner, onOpenExpense }: MPlaceEditSh
             placeId={sheetPlace?.id}
             hintKey="places.createExpenseHint"
             createDisabled={!form.name.trim() || isSaving}
-            onCreate={() => { expenseIntentRef.current = true; handleSubmit() }}
+            onCreate={() => { expenseIntentRef.current = true; void handleSubmit() }}
             onEdit={item => onOpenExpense({ editItem: item })}
           />
         )}
diff --git a/client/src/mobile/screens/trip/sheets/MPlaceSheet.tsx b/client/src/mobile/screens/trip/sheets/MPlaceSheet.tsx
index 9d02048a7..b8d29f0dd 100644
--- a/client/src/mobile/screens/trip/sheets/MPlaceSheet.tsx
+++ b/client/src/mobile/screens/trip/sheets/MPlaceSheet.tsx
@@ -146,12 +146,12 @@ export default function MPlaceSheet({ planner, shell }: MTripSheetsProps) {
   const removeParticipant = (userId: number) => {
     let next = allJoined ? members.filter(m => m.id !== userId).map(m => m.id) : participantIds.filter(id => id !== userId)
     if (next.length === members.length) next = []
-    setParticipants(next)
+    void setParticipants(next)
   }
 
   const addParticipant = (userId: number) => {
     const next = [...participantIds, userId]
-    setParticipants(next.length === members.length ? [] : next)
+    void setParticipants(next.length === members.length ? [] : next)
     setParticipantPickerOpen(false)
   }
 
diff --git a/client/src/mobile/screens/trip/sheets/MTransportSheet.tsx b/client/src/mobile/screens/trip/sheets/MTransportSheet.tsx
index c14791d6c..e3188702f 100644
--- a/client/src/mobile/screens/trip/sheets/MTransportSheet.tsx
+++ b/client/src/mobile/screens/trip/sheets/MTransportSheet.tsx
@@ -144,7 +144,7 @@ export default function MTransportSheet({ planner, shell }: MTripSheetsProps) {
   }
 
   const deleteTransport = () => {
-    planner.handleDeleteReservation(res.id)
+    void planner.handleDeleteReservation(res.id)
     shell.closeSheet()
   }
 
diff --git a/client/src/mobile/screens/trip/sheets/PlCategoryPicker.tsx b/client/src/mobile/screens/trip/sheets/PlCategoryPicker.tsx
index 6b6738a70..f50fd0ae8 100644
--- a/client/src/mobile/screens/trip/sheets/PlCategoryPicker.tsx
+++ b/client/src/mobile/screens/trip/sheets/PlCategoryPicker.tsx
@@ -84,7 +84,7 @@ export default function PlCategoryPicker({ planner, value, onChange }: PlCategor
             onKeyDown={e => {
               if (e.key === 'Enter') {
                 e.preventDefault()
-                handleCreate()
+                void handleCreate()
               }
             }}
             placeholder={t('places.categoryNamePlaceholder')}
diff --git a/client/src/mobile/screens/trip/sheets/PlPlaceSearch.tsx b/client/src/mobile/screens/trip/sheets/PlPlaceSearch.tsx
index 6b6785307..5455201de 100644
--- a/client/src/mobile/screens/trip/sheets/PlPlaceSearch.tsx
+++ b/client/src/mobile/screens/trip/sheets/PlPlaceSearch.tsx
@@ -301,7 +301,7 @@ export default function PlPlaceSearch({ planner, locationBias, onPick, onResolvi
           onKeyDown={e => {
             if (e.key === 'Enter') {
               e.preventDefault()
-              handleSearch()
+              void handleSearch()
             }
           }}
           onBlur={() => setTimeout(() => setSuggestions([]), 150)}
diff --git a/client/src/mobile/screens/trip/tabs/MBookingsTab.tsx b/client/src/mobile/screens/trip/tabs/MBookingsTab.tsx
index c21348538..30fba55ae 100644
--- a/client/src/mobile/screens/trip/tabs/MBookingsTab.tsx
+++ b/client/src/mobile/screens/trip/tabs/MBookingsTab.tsx
@@ -247,8 +247,8 @@ function BookingCard({ res, planner, canEdit, compact }: {
                       key={f.id}
                       role="button"
                       tabIndex={0}
-                      onClick={e => { e.stopPropagation(); openFile(f.url, f.original_name) }}
-                      onKeyDown={e => { if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); e.stopPropagation(); openFile(f.url, f.original_name) } }}
+                      onClick={e => { e.stopPropagation(); void openFile(f.url, f.original_name) }}
+                      onKeyDown={e => { if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); e.stopPropagation(); void openFile(f.url, f.original_name) } }}
                       className="flex items-center gap-[6px] rounded-[10px] border border-[color:var(--m-rowbr)] bg-m-card px-[10px] py-[7px]"
                     >
                       <FileText size={12} strokeWidth={2} className="flex-none text-m-muted" />
diff --git a/client/src/mobile/screens/trip/tabs/MCostsTab.tsx b/client/src/mobile/screens/trip/tabs/MCostsTab.tsx
index c1299ff22..d48f793fe 100644
--- a/client/src/mobile/screens/trip/tabs/MCostsTab.tsx
+++ b/client/src/mobile/screens/trip/tabs/MCostsTab.tsx
@@ -599,7 +599,7 @@ export default function MCostsTab({ planner, shell }: MTabScreenProps) {
         onConfirm={() => {
           const item = confirmDelete
           setConfirmDelete(null)
-          if (item) handleDeleteExpense(item)
+          if (item) void handleDeleteExpense(item)
         }}
       />
 
diff --git a/client/src/mobile/screens/trip/tabs/MFileLightbox.tsx b/client/src/mobile/screens/trip/tabs/MFileLightbox.tsx
index ef27fd758..c17f350c8 100644
--- a/client/src/mobile/screens/trip/tabs/MFileLightbox.tsx
+++ b/client/src/mobile/screens/trip/tabs/MFileLightbox.tsx
@@ -42,7 +42,7 @@ export default function MFileLightbox({ files, index, onIndexChange, onClose, t
     let cancelled = false
     setImgSrc('')
     if (fileUrl && !isVideo(fileMimeType)) {
-      getAuthUrl(fileUrl, 'download').then(url => { if (!cancelled) setImgSrc(url) })
+      void getAuthUrl(fileUrl, 'download').then(url => { if (!cancelled) setImgSrc(url) })
     }
     return () => { cancelled = true }
   }, [fileUrl, fileMimeType])
diff --git a/client/src/mobile/screens/trip/tabs/MPackingListTab.tsx b/client/src/mobile/screens/trip/tabs/MPackingListTab.tsx
index 72854539c..e6a9dc7f6 100644
--- a/client/src/mobile/screens/trip/tabs/MPackingListTab.tsx
+++ b/client/src/mobile/screens/trip/tabs/MPackingListTab.tsx
@@ -387,7 +387,7 @@ export default function MPackingListTab({ planner }: { planner: TripPlanner }) {
                 autoFocus
                 value={saveTemplateName}
                 onChange={e => setSaveTemplateName(e.target.value)}
-                onKeyDown={e => { if (e.key === 'Enter') saveAsTemplate() }}
+                onKeyDown={e => { if (e.key === 'Enter') void saveAsTemplate() }}
                 placeholder={t('packing.templateName')}
                 className={`${FIELD_CLS} flex-1`}
               />
@@ -417,7 +417,7 @@ export default function MPackingListTab({ planner }: { planner: TripPlanner }) {
               value={newCategoryName}
               onChange={e => setNewCategoryName(e.target.value)}
               onKeyDown={e => {
-                if (e.key === 'Enter') addNewCategory()
+                if (e.key === 'Enter') void addNewCategory()
                 if (e.key === 'Escape') { setAddingCategory(false); setNewCategoryName('') }
               }}
               placeholder={t('packing.newCategoryPlaceholder')}
@@ -538,7 +538,7 @@ export default function MPackingListTab({ planner }: { planner: TripPlanner }) {
         confirmLabel={t('common.delete')}
         cancelLabel={t('common.cancel')}
         danger
-        onConfirm={() => { setConfirmClear(false); clearChecked() }}
+        onConfirm={() => { setConfirmClear(false); void clearChecked() }}
       />
 
       <MConfirmSheet
@@ -554,7 +554,7 @@ export default function MPackingListTab({ planner }: { planner: TripPlanner }) {
         onConfirm={() => {
           const target = deleteCategoryTarget
           setDeleteCategoryTarget(null)
-          if (target) deleteCategoryItems(target.items)
+          if (target) void deleteCategoryItems(target.items)
         }}
       />
     </TabScroller>
@@ -996,7 +996,7 @@ function PackingItemRow({ item, planner, currentUserId, editMode, canEdit, bagTr
                 autoFocus
                 value={newBagName}
                 onChange={e => setNewBagName(e.target.value)}
-                onKeyDown={e => { if (e.key === 'Enter') submitNewBag(); if (e.key === 'Escape') { setCreatingBag(false); setNewBagName('') } }}
+                onKeyDown={e => { if (e.key === 'Enter') void submitNewBag(); if (e.key === 'Escape') { setCreatingBag(false); setNewBagName('') } }}
                 placeholder={t('packing.bagName')}
                 className={`${FIELD_CLS} flex-1 py-[6px] text-[0.75rem]`}
               />
diff --git a/client/src/mobile/screens/trip/tabs/MTransportsTab.tsx b/client/src/mobile/screens/trip/tabs/MTransportsTab.tsx
index 70e9fe0fc..3840fb8ec 100644
--- a/client/src/mobile/screens/trip/tabs/MTransportsTab.tsx
+++ b/client/src/mobile/screens/trip/tabs/MTransportsTab.tsx
@@ -265,8 +265,8 @@ function TransportCard({ res, planner, shell, canEdit, compact }: {
                       key={f.id}
                       role="button"
                       tabIndex={0}
-                      onClick={e => { e.stopPropagation(); openFile(f.url, f.original_name) }}
-                      onKeyDown={e => { if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); e.stopPropagation(); openFile(f.url, f.original_name) } }}
+                      onClick={e => { e.stopPropagation(); void openFile(f.url, f.original_name) }}
+                      onKeyDown={e => { if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); e.stopPropagation(); void openFile(f.url, f.original_name) } }}
                       className="flex items-center gap-[6px] rounded-[10px] border border-[color:var(--m-rowbr)] bg-m-card px-[10px] py-[7px]"
                     >
                       <FileText size={12} strokeWidth={2} className="flex-none text-m-muted" />
diff --git a/client/src/mobile/screens/vacay/useMVacay.ts b/client/src/mobile/screens/vacay/useMVacay.ts
index 52258eff7..7d5460f60 100644
--- a/client/src/mobile/screens/vacay/useMVacay.ts
+++ b/client/src/mobile/screens/vacay/useMVacay.ts
@@ -64,7 +64,7 @@ export function useMVacay() {
   // Trip-overlap dots: collect every day of the year covered by an own trip.
   useEffect(() => {
     let cancelled = false
-    ;(async () => {
+    ;void (async () => {
       try {
         const data = await tripsApi.list()
         const dates = new Set<string>()
diff --git a/client/src/pages/AtlasPage.tsx b/client/src/pages/AtlasPage.tsx
index 75be38ba7..0901e0772 100644
--- a/client/src/pages/AtlasPage.tsx
+++ b/client/src/pages/AtlasPage.tsx
@@ -644,7 +644,7 @@ function SidebarContent({ data, stats, regionsVisited, countryRegions, onOpenPla
           <div ref={bucketSearchRowRef} style={{ display: 'flex', gap: 4 }}>
             <input type="text" value={bucketForm.name || bucketSearch}
               onChange={e => { const v = e.target.value; if (bucketForm.name) setBucketForm({ ...bucketForm, name: v }); else setBucketSearch(v) }}
-              onKeyDown={e => { if (e.key === 'Enter' && !bucketForm.name) onSearchBucket(); else if (e.key === 'Enter') onAddBucket(); if (e.key === 'Escape') setShowBucketAdd(false) }}
+              onKeyDown={e => { if (e.key === 'Enter' && !bucketForm.name) void onSearchBucket(); else if (e.key === 'Enter') void onAddBucket(); if (e.key === 'Escape') setShowBucketAdd(false) }}
               placeholder={t('atlas.bucketNamePlaceholder')}
               autoFocus
               className="border border-edge text-content bg-surface-input"
diff --git a/client/src/pages/admin/useAdmin.ts b/client/src/pages/admin/useAdmin.ts
index 717062185..ffb51b7be 100644
--- a/client/src/pages/admin/useAdmin.ts
+++ b/client/src/pages/admin/useAdmin.ts
@@ -210,9 +210,9 @@ export function useAdmin() {
   const [rotatingJwt, setRotatingJwt] = useState<boolean>(false)
 
   useEffect(() => {
-    loadData()
-    loadAppConfig()
-    loadApiKeys()
+    void loadData()
+    void loadAppConfig()
+    void loadApiKeys()
     // Skipped rather than caught when the route is closed to us: the request
     // still reaches the network, still answers 403, and still prints a red line
     // in the console of every admin who opens this page. Swallowing the promise
@@ -441,7 +441,7 @@ export function useAdmin() {
       setInviteForm({ max_uses: 1, expires_in_days: 7, trip_id: '' })
       // Copy link to clipboard
       const link = `${window.location.origin}/register?invite=${data.invite.token}`
-      navigator.clipboard.writeText(link).then(() => toast.success(t('admin.invite.copied')))
+      void navigator.clipboard.writeText(link).then(() => toast.success(t('admin.invite.copied')))
     } catch (err: unknown) {
       toast.error(getApiErrorMessage(err, t('admin.invite.createError')))
     }
@@ -459,7 +459,7 @@ export function useAdmin() {
 
   const copyInviteLink = (token: string) => {
     const link = `${window.location.origin}/register?invite=${token}`
-    navigator.clipboard.writeText(link).then(() => toast.success(t('admin.invite.copied')))
+    void navigator.clipboard.writeText(link).then(() => toast.success(t('admin.invite.copied')))
   }
 
   const handleEditUser = (user) => {
diff --git a/client/src/pages/dashboard/useDashboard.ts b/client/src/pages/dashboard/useDashboard.ts
index d804e7e58..b3fb8967e 100644
--- a/client/src/pages/dashboard/useDashboard.ts
+++ b/client/src/pages/dashboard/useDashboard.ts
@@ -63,7 +63,7 @@ export function useDashboard() {
     }
   }, [searchParams])
 
-  useEffect(() => { loadTrips() }, [])
+  useEffect(() => { void loadTrips() }, [])
 
   // Travel stats + upcoming reservations power the atlas row and the sidebar.
   // Both are best-effort: a failure just leaves that section empty.
@@ -91,7 +91,7 @@ export function useDashboard() {
   // the error banner (loadUser resets authCheckFailed on success). #1283
   const retryLoad = () => {
     loadUser({ silent: true })
-    loadTrips()
+    void loadTrips()
   }
 
   const today = localIsoToday()
diff --git a/client/src/pages/files/useFiles.ts b/client/src/pages/files/useFiles.ts
index f62bfe277..faa0ffa78 100644
--- a/client/src/pages/files/useFiles.ts
+++ b/client/src/pages/files/useFiles.ts
@@ -22,7 +22,7 @@ export function useFiles() {
   const [isLoading, setIsLoading] = useState<boolean>(true)
 
   useEffect(() => {
-    loadData()
+    void loadData()
   }, [tripId])
 
   const loadData = async (): Promise<void> => {
diff --git a/client/src/pages/journey/useJourney.ts b/client/src/pages/journey/useJourney.ts
index af3d373da..90b540a52 100644
--- a/client/src/pages/journey/useJourney.ts
+++ b/client/src/pages/journey/useJourney.ts
@@ -42,7 +42,7 @@ export function useJourney() {
   // The bottom-nav "+" opens the new-journey modal via ?create=1.
   useEffect(() => {
     if (searchParams.get('create') === '1') {
-      openCreateModal()
+      void openCreateModal()
       setSearchParams(p => { p.delete('create'); return p }, { replace: true })
     }
   }, [searchParams])
diff --git a/client/src/pages/oauthAuthorize/useOAuthAuthorize.ts b/client/src/pages/oauthAuthorize/useOAuthAuthorize.ts
index 490df6ae7..724860fb1 100644
--- a/client/src/pages/oauthAuthorize/useOAuthAuthorize.ts
+++ b/client/src/pages/oauthAuthorize/useOAuthAuthorize.ts
@@ -48,7 +48,7 @@ export function useOAuthAuthorize() {
 
   useEffect(() => {
     if (authLoading) return
-    validateRequest()
+    void validateRequest()
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [authLoading, isAuthenticated])
 
diff --git a/client/src/pages/tripPlanner/useDayAdd.ts b/client/src/pages/tripPlanner/useDayAdd.ts
index b82387f4a..eab6f99ee 100644
--- a/client/src/pages/tripPlanner/useDayAdd.ts
+++ b/client/src/pages/tripPlanner/useDayAdd.ts
@@ -48,7 +48,7 @@ export function useDayAdd(options: DayAddOptions): DayAdd {
     if (inFlight.current) return
     inFlight.current = true
     setBusy(true)
-    add().finally(() => {
+    void add().finally(() => {
       inFlight.current = false
       setBusy(false)
     })
diff --git a/client/src/pages/tripPlanner/useTripPlanner.ts b/client/src/pages/tripPlanner/useTripPlanner.ts
index 2e8f8c7d1..3f2bcf401 100644
--- a/client/src/pages/tripPlanner/useTripPlanner.ts
+++ b/client/src/pages/tripPlanner/useTripPlanner.ts
@@ -2849,7 +2849,7 @@ export function useTripPlanner() {
       if (!receipt) return
       void (async () => {
         const files = inMemory && inMemory.length ? inMemory : await getImportFiles(jobId)
-        deleteImportFiles(jobId)
+        void deleteImportFiles(jobId)
         setReceiptExpense(receiptToPrefill(receipt, canUploadFiles ? files : []))
       })()
     } else if (task && task.items && task.items.length > 0) {
@@ -2863,7 +2863,7 @@ export function useTripPlanner() {
       // Prefer the in-memory files (immediate path); after a reload they live in IndexedDB.
       void (async () => {
         const files = inMemory && inMemory.length ? inMemory : await getImportFiles(jobId)
-        deleteImportFiles(jobId)
+        void deleteImportFiles(jobId)
         startImportReview(items, files, kind)
       })()
     }
diff --git a/client/src/repo/budgetRepo.ts b/client/src/repo/budgetRepo.ts
index c2f0fa318..b0af41694 100644
--- a/client/src/repo/budgetRepo.ts
+++ b/client/src/repo/budgetRepo.ts
@@ -8,7 +8,7 @@ export const budgetRepo = {
     return onlineThenCache(
       async () => {
         const result = await budgetApi.list(tripId)
-        upsertBudgetItems(result.items)
+        void upsertBudgetItems(result.items)
         return result
       },
       async () => ({
diff --git a/client/src/repo/dayRepo.ts b/client/src/repo/dayRepo.ts
index 337118675..0424fe59d 100644
--- a/client/src/repo/dayRepo.ts
+++ b/client/src/repo/dayRepo.ts
@@ -14,7 +14,7 @@ export const dayRepo = {
     return onlineThenCache(
       async () => {
         const result = await daysApi.list(tripId)
-        upsertDays(result.days)
+        void upsertDays(result.days)
         return result
       },
       async () => ({
diff --git a/client/src/repo/fileRepo.ts b/client/src/repo/fileRepo.ts
index 8c75c863e..7f85160df 100644
--- a/client/src/repo/fileRepo.ts
+++ b/client/src/repo/fileRepo.ts
@@ -8,7 +8,7 @@ export const fileRepo = {
     return onlineThenCache(
       async () => {
         const result = await filesApi.list(tripId)
-        upsertTripFiles(result.files)
+        void upsertTripFiles(result.files)
         return result
       },
       async () => ({
diff --git a/client/src/repo/packingRepo.ts b/client/src/repo/packingRepo.ts
index 38ba2da7d..ce06a9550 100644
--- a/client/src/repo/packingRepo.ts
+++ b/client/src/repo/packingRepo.ts
@@ -10,7 +10,7 @@ export const packingRepo = {
     return onlineThenCache(
       async () => {
         const result = await packingApi.list(tripId)
-        upsertPackingItems(result.items)
+        void upsertPackingItems(result.items)
         return result
       },
       async () => ({
diff --git a/client/src/repo/placeRepo.ts b/client/src/repo/placeRepo.ts
index 6b86063dc..121ed1154 100644
--- a/client/src/repo/placeRepo.ts
+++ b/client/src/repo/placeRepo.ts
@@ -10,7 +10,7 @@ export const placeRepo = {
     return onlineThenCache(
       async () => {
         const result = await placesApi.list(tripId, params)
-        upsertPlaces(result.places)
+        void upsertPlaces(result.places)
         return result
       },
       async () => ({
diff --git a/client/src/repo/reservationRepo.ts b/client/src/repo/reservationRepo.ts
index 0394adb1d..ac5b766ec 100644
--- a/client/src/repo/reservationRepo.ts
+++ b/client/src/repo/reservationRepo.ts
@@ -8,7 +8,7 @@ export const reservationRepo = {
     return onlineThenCache(
       async () => {
         const result = await reservationsApi.list(tripId)
-        upsertReservations(result.reservations)
+        void upsertReservations(result.reservations)
         return result
       },
       async () => ({
diff --git a/client/src/repo/todoRepo.ts b/client/src/repo/todoRepo.ts
index 60b47aff8..bdfb40091 100644
--- a/client/src/repo/todoRepo.ts
+++ b/client/src/repo/todoRepo.ts
@@ -8,7 +8,7 @@ export const todoRepo = {
     return onlineThenCache(
       async () => {
         const result = await todoApi.list(tripId)
-        upsertTodoItems(result.items)
+        void upsertTodoItems(result.items)
         return result
       },
       async () => ({
diff --git a/client/src/repo/tripRepo.ts b/client/src/repo/tripRepo.ts
index 76d2798de..b300cde14 100644
--- a/client/src/repo/tripRepo.ts
+++ b/client/src/repo/tripRepo.ts
@@ -75,7 +75,7 @@ export const tripRepo = {
     return onlineThenCache(
       async () => {
         const result = await tripsApi.get(tripId)
-        upsertTrip(result.trip)
+        void upsertTrip(result.trip)
         return result
       },
       async () => {
diff --git a/client/src/services/photoService.ts b/client/src/services/photoService.ts
index 24eaba81f..860db5138 100644
--- a/client/src/services/photoService.ts
+++ b/client/src/services/photoService.ts
@@ -115,14 +115,14 @@ export function fetchPhoto(
     callback?.(entry)
     notify(cacheKey, entry)
     // Generate base64 thumb in background
-    urlToBase64(photoId).then(thumb => {
+    void urlToBase64(photoId).then(thumb => {
       if (thumb) { entry.thumbDataUrl = thumb; notifyThumb(cacheKey, thumb) }
     })
     return
   }
 
   inFlight.add(cacheKey)
-  acquireRequestSlot().then(() =>
+  void acquireRequestSlot().then(() =>
     mapsApi.placePhoto(photoId, lat, lng, name)
       .then(async (data: { photoUrl?: string }) => {
         const photoUrl = data.photoUrl || null
diff --git a/client/src/store/slices/remoteEventHandler.ts b/client/src/store/slices/remoteEventHandler.ts
index da9702484..38acd8e3c 100644
--- a/client/src/store/slices/remoteEventHandler.ts
+++ b/client/src/store/slices/remoteEventHandler.ts
@@ -173,7 +173,7 @@ function writeToDexie(
   payload: Record<string, unknown>,
   state: TripStoreState,
 ): void {
-  ;(async () => {
+  ;void (async () => {
     try {
       await DEXIE_WRITERS[type as TrekWsTripEventName]?.(payload, state)
     } catch {
diff --git a/client/src/sync/tripSyncManager.ts b/client/src/sync/tripSyncManager.ts
index fcfef99c6..9d325b6ec 100644
--- a/client/src/sync/tripSyncManager.ts
+++ b/client/src/sync/tripSyncManager.ts
@@ -265,8 +265,8 @@ export const tripSyncManager = {
       // Cache global user data (tags + categories) — fire-and-forget, so the
       // gate has to be re-read when the response lands, not when it was issued:
       // a logout in between would put these rows in the anonymous database.
-      tagsApi.list().then(d => { if (isAuthed()) upsertTags(d.tags) }).catch(() => {})
-      categoriesApi.list().then(d => { if (isAuthed()) upsertCategories(d.categories) }).catch(() => {})
+      tagsApi.list().then(d => { if (isAuthed()) void upsertTags(d.tags) }).catch(() => {})
+      categoriesApi.list().then(d => { if (isAuthed()) void upsertCategories(d.categories) }).catch(() => {})
 
       // Cache file blobs + map tiles in background (don't block syncAll)
       const cacheTiles = getOfflinePrefs().cacheTiles
diff --git a/server/src/nest/memories/trek-photo-cache.service.ts b/server/src/nest/memories/trek-photo-cache.service.ts
index 291d403e3..ddfca8774 100644
--- a/server/src/nest/memories/trek-photo-cache.service.ts
+++ b/server/src/nest/memories/trek-photo-cache.service.ts
@@ -91,7 +91,7 @@ export class TrekPhotoCacheService {
 
   setInFlight(key: string, promise: Promise<Buffer | null>): void {
     inFlight.set(key, promise);
-    promise.finally(() => inFlight.delete(key));
+    void promise.finally(() => inFlight.delete(key));
   }
 
   async sweepExpired(): Promise<void> {