diff --git a/apps/web/src/app/(portal)/page.tsx b/apps/web/src/app/(portal)/page.tsx
index 55d2bfb..25b72ce 100644
--- a/apps/web/src/app/(portal)/page.tsx
+++ b/apps/web/src/app/(portal)/page.tsx
@@ -81,10 +81,12 @@ export default function DashboardPage() {
       <div className="fixed bottom-6 right-6 z-20 flex items-center gap-2">
         {isEditMode && (
           <button
+            type="button"
             onClick={() => setCatalogOpen(true)}
             className="flex items-center gap-2 rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground shadow-lg hover:opacity-90 transition-opacity"
           >
             <svg
+              aria-hidden="true"
               xmlns="http://www.w3.org/2000/svg"
               width="16"
               height="16"
diff --git a/apps/web/src/components/dashboard/edit-mode-toggle.tsx b/apps/web/src/components/dashboard/edit-mode-toggle.tsx
index 3bdebce..54ab702 100644
--- a/apps/web/src/components/dashboard/edit-mode-toggle.tsx
+++ b/apps/web/src/components/dashboard/edit-mode-toggle.tsx
@@ -19,6 +19,7 @@ export function EditModeToggle({ isEditMode, onToggle }: EditModeToggleProps) {
 
   return (
     <button
+      type="button"
       onClick={onToggle}
       className={`inline-flex items-center justify-center rounded-md p-2 shadow-lg transition-colors ${
         isEditMode
@@ -32,6 +33,7 @@ export function EditModeToggle({ isEditMode, onToggle }: EditModeToggleProps) {
       {isEditMode ? (
         // Checkmark icon
         <svg
+          aria-hidden="true"
           xmlns="http://www.w3.org/2000/svg"
           width="20"
           height="20"
@@ -47,6 +49,7 @@ export function EditModeToggle({ isEditMode, onToggle }: EditModeToggleProps) {
       ) : (
         // Pencil icon
         <svg
+          aria-hidden="true"
           xmlns="http://www.w3.org/2000/svg"
           width="20"
           height="20"
diff --git a/apps/web/src/components/dashboard/widget-catalog-modal.tsx b/apps/web/src/components/dashboard/widget-catalog-modal.tsx
index d8e8258..118a144 100644
--- a/apps/web/src/components/dashboard/widget-catalog-modal.tsx
+++ b/apps/web/src/components/dashboard/widget-catalog-modal.tsx
@@ -76,11 +76,13 @@ export function WidgetCatalogModal({
             {t('catalogTitle')}
           </h2>
           <button
+            type="button"
             onClick={onClose}
             className="rounded-md p-1 text-muted-foreground transition-colors hover:bg-muted hover:text-foreground"
             aria-label="Close"
           >
             <svg
+              aria-hidden="true"
               xmlns="http://www.w3.org/2000/svg"
               width="20"
               height="20"
@@ -105,6 +107,7 @@ export function WidgetCatalogModal({
             return (
               <button
                 key={type}
+                type="button"
                 onClick={() => {
                   onAddWidget(type);
                   onClose();
diff --git a/apps/web/src/components/dashboard/widget-registry.tsx b/apps/web/src/components/dashboard/widget-registry.tsx
index 8900d15..da019ef 100644
--- a/apps/web/src/components/dashboard/widget-registry.tsx
+++ b/apps/web/src/components/dashboard/widget-registry.tsx
@@ -90,6 +90,7 @@ function PlaceholderWidget({ config }: WidgetProps) {
 function ClockIcon({ className }: { className?: string }) {
   return (
     <svg
+      aria-hidden="true"
       xmlns="http://www.w3.org/2000/svg"
       width="24"
       height="24"
@@ -110,6 +111,7 @@ function ClockIcon({ className }: { className?: string }) {
 function SearchIcon({ className }: { className?: string }) {
   return (
     <svg
+      aria-hidden="true"
       xmlns="http://www.w3.org/2000/svg"
       width="24"
       height="24"
@@ -130,6 +132,7 @@ function SearchIcon({ className }: { className?: string }) {
 function CalendarIcon({ className }: { className?: string }) {
   return (
     <svg
+      aria-hidden="true"
       xmlns="http://www.w3.org/2000/svg"
       width="24"
       height="24"
@@ -152,6 +155,7 @@ function CalendarIcon({ className }: { className?: string }) {
 function NoteIcon({ className }: { className?: string }) {
   return (
     <svg
+      aria-hidden="true"
       xmlns="http://www.w3.org/2000/svg"
       width="24"
       height="24"
@@ -175,6 +179,7 @@ function NoteIcon({ className }: { className?: string }) {
 function CalculatorIcon({ className }: { className?: string }) {
   return (
     <svg
+      aria-hidden="true"
       xmlns="http://www.w3.org/2000/svg"
       width="24"
       height="24"
@@ -203,6 +208,7 @@ function CalculatorIcon({ className }: { className?: string }) {
 function FavoritesIcon({ className }: { className?: string }) {
   return (
     <svg
+      aria-hidden="true"
       xmlns="http://www.w3.org/2000/svg"
       width="24"
       height="24"
@@ -222,6 +228,7 @@ function FavoritesIcon({ className }: { className?: string }) {
 function StopwatchIcon({ className }: { className?: string }) {
   return (
     <svg
+      aria-hidden="true"
       xmlns="http://www.w3.org/2000/svg"
       width="24"
       height="24"
diff --git a/apps/web/src/components/dashboard/widgets/note-widget.tsx b/apps/web/src/components/dashboard/widgets/note-widget.tsx
index 1ff1479..d8d2edb 100644
--- a/apps/web/src/components/dashboard/widgets/note-widget.tsx
+++ b/apps/web/src/components/dashboard/widgets/note-widget.tsx
@@ -157,11 +157,13 @@ export function NoteWidget({ instanceId, config }: WidgetProps) {
           />
         )}
         <button
+          type="button"
           onClick={() => setIsEditing((v) => !v)}
           className={`flex h-6 w-6 shrink-0 items-center justify-center rounded transition-colors hover:bg-muted ${isEditing ? 'text-destructive' : 'text-muted-foreground'}`}
           title={isEditing ? t('note.viewMode') : t('note.editMode')}
         >
           <svg
+            aria-hidden="true"
             xmlns="http://www.w3.org/2000/svg"
             width="14"
             height="14"
diff --git a/apps/web/src/components/dashboard/widgets/search-widget.tsx b/apps/web/src/components/dashboard/widgets/search-widget.tsx
index 1fa31fd..1c9888f 100644
--- a/apps/web/src/components/dashboard/widgets/search-widget.tsx
+++ b/apps/web/src/components/dashboard/widgets/search-widget.tsx
@@ -116,8 +116,10 @@ export function SearchWidget({ instanceId, config }: WidgetProps) {
         type="button"
         className="flex h-8 shrink-0 items-center justify-center rounded bg-primary px-3 text-sm font-medium text-primary-foreground transition-colors hover:bg-primary/90"
         onClick={handleSearch}
+        aria-label={t('search.searchButton')}
       >
         <svg
+          aria-hidden="true"
           xmlns="http://www.w3.org/2000/svg"
           width="16"
           height="16"
diff --git a/apps/web/src/components/dashboard/widgets/widget-wrapper.tsx b/apps/web/src/components/dashboard/widgets/widget-wrapper.tsx
index 98f2e7d..517213e 100644
--- a/apps/web/src/components/dashboard/widgets/widget-wrapper.tsx
+++ b/apps/web/src/components/dashboard/widgets/widget-wrapper.tsx
@@ -78,6 +78,7 @@ export function WidgetWrapper({ widget, isEditMode, onRemove }: WidgetWrapperPro
             data-no-drag=""
           >
             <svg
+              aria-hidden="true"
               xmlns="http://www.w3.org/2000/svg"
               width="12"
               height="12"