diff --git a/apps/web/src/app/(portal)/marketplace/[slug]/page.tsx b/apps/web/src/app/(portal)/marketplace/[slug]/page.tsx
index 4c622bb..ef0239d 100644
--- a/apps/web/src/app/(portal)/marketplace/[slug]/page.tsx
+++ b/apps/web/src/app/(portal)/marketplace/[slug]/page.tsx
@@ -134,7 +134,7 @@ export default function ModuleDetailPage() {
     return (
       <div className="max-w-2xl mx-auto space-y-4">
         <Link href="/marketplace" className="inline-flex items-center gap-1 text-sm text-muted-foreground hover:text-foreground">
-          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+          <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
             <path d="m15 18-6-6 6-6" />
           </svg>
           {t('backToMarketplace')}
@@ -150,7 +150,7 @@ export default function ModuleDetailPage() {
   return (
     <div className="max-w-2xl mx-auto space-y-6">
       <Link href="/marketplace" className="inline-flex items-center gap-1 text-sm text-muted-foreground hover:text-foreground">
-        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+        <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
           <path d="m15 18-6-6 6-6" />
         </svg>
         {t('backToMarketplace')}
@@ -159,13 +159,13 @@ export default function ModuleDetailPage() {
       <div className="flex items-start gap-4">
         <div className="rounded-lg bg-muted p-4 shrink-0">
           {module.icon === 'Globe' ? (
-            <svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="text-primary">
+            <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="text-primary">
               <circle cx="12" cy="12" r="10" />
               <path d="M12 2a14.5 14.5 0 0 0 0 20 14.5 14.5 0 0 0 0-20" />
               <path d="M2 12h20" />
             </svg>
           ) : (
-            <svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="text-primary">
+            <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="text-primary">
               <path d="M19.439 7.85c-.049.322.059.648.289.878l1.568 1.568c.47.47.706 1.087.706 1.704s-.235 1.233-.706 1.704l-1.611 1.611a.98.98 0 0 1-.837.276c-.47-.07-.802-.48-.968-.925a2.501 2.501 0 1 0-3.214 3.214c.446.166.855.497.925.968a.979.979 0 0 1-.276.837l-1.61 1.61a2.404 2.404 0 0 1-1.705.707 2.402 2.402 0 0 1-1.704-.706l-1.568-1.568a1.026 1.026 0 0 0-.877-.29c-.493.074-.84.504-1.02.968a2.5 2.5 0 1 1-3.237-3.237c.464-.18.894-.527.967-1.02a1.026 1.026 0 0 0-.289-.877l-1.568-1.568A2.402 2.402 0 0 1 1.998 12c0-.617.236-1.234.706-1.704L4.315 8.685a.98.98 0 0 1 .837-.276c.47.07.802.48.968.925a2.501 2.501 0 1 0 3.214-3.214c-.446-.166-.855-.497-.925-.968a.979.979 0 0 1 .276-.837l1.61-1.61a2.404 2.404 0 0 1 1.705-.707c.617 0 1.234.236 1.704.706l1.568 1.568c.23.23.556.338.877.29.493-.074.84-.504 1.02-.968a2.5 2.5 0 1 1 3.237 3.237c-.464.18-.894.527-.967 1.02Z" />
             </svg>
           )}
@@ -187,6 +187,7 @@ export default function ModuleDetailPage() {
         </span>
         {isAdmin && (
           <button
+            type="button"
             onClick={handleToggle}
             disabled={toggling}
             className={`rounded-md px-4 py-2 text-sm font-medium transition-colors disabled:cursor-wait disabled:opacity-50 ${
diff --git a/apps/web/src/app/(portal)/marketplace/components/ActivationDialog.tsx b/apps/web/src/app/(portal)/marketplace/components/ActivationDialog.tsx
index 7c585de..ab0a773 100644
--- a/apps/web/src/app/(portal)/marketplace/components/ActivationDialog.tsx
+++ b/apps/web/src/app/(portal)/marketplace/components/ActivationDialog.tsx
@@ -52,6 +52,7 @@ export function ActivationDialog({ open, moduleName, onConfirm, onCancel }: Acti
         </p>
         <div className="flex justify-end gap-3">
           <button
+            type="button"
             ref={cancelRef}
             onClick={onCancel}
             className="rounded-md border border-border px-3 py-1.5 text-sm font-medium text-foreground hover:bg-muted"
@@ -59,6 +60,7 @@ export function ActivationDialog({ open, moduleName, onConfirm, onCancel }: Acti
             {t('deactivateDialogCancel')}
           </button>
           <button
+            type="button"
             ref={confirmRef}
             onClick={onConfirm}
             className="rounded-md bg-destructive px-3 py-1.5 text-sm font-medium text-destructive-foreground hover:bg-destructive/90"
diff --git a/apps/web/src/app/(portal)/marketplace/components/CategoryFilter.tsx b/apps/web/src/app/(portal)/marketplace/components/CategoryFilter.tsx
index 5fa9c6e..9106a95 100644
--- a/apps/web/src/app/(portal)/marketplace/components/CategoryFilter.tsx
+++ b/apps/web/src/app/(portal)/marketplace/components/CategoryFilter.tsx
@@ -14,6 +14,7 @@ export function CategoryFilter({ categories, value, onChange }: CategoryFilterPr
   return (
     <div className="flex gap-2 overflow-x-auto pb-1">
       <button
+        type="button"
         role="button"
         onClick={() => onChange('all')}
         className={`rounded-full px-3 py-1 text-xs font-medium whitespace-nowrap transition-colors ${
@@ -27,6 +28,7 @@ export function CategoryFilter({ categories, value, onChange }: CategoryFilterPr
       {categories.map((cat) => (
         <button
           key={cat}
+          type="button"
           role="button"
           onClick={() => onChange(cat)}
           className={`rounded-full px-3 py-1 text-xs font-medium whitespace-nowrap transition-colors ${
diff --git a/apps/web/src/app/(portal)/marketplace/components/MarketplaceCard.tsx b/apps/web/src/app/(portal)/marketplace/components/MarketplaceCard.tsx
index 9d768f3..37523a4 100644
--- a/apps/web/src/app/(portal)/marketplace/components/MarketplaceCard.tsx
+++ b/apps/web/src/app/(portal)/marketplace/components/MarketplaceCard.tsx
@@ -33,6 +33,7 @@ function ModuleIcon({ icon }: { icon?: string }) {
   if (icon === 'Globe') {
     return (
       <svg
+        aria-hidden="true"
         xmlns="http://www.w3.org/2000/svg"
         width="24"
         height="24"
@@ -54,6 +55,7 @@ function ModuleIcon({ icon }: { icon?: string }) {
   // Default puzzle-piece icon for generic modules
   return (
     <svg
+      aria-hidden="true"
       xmlns="http://www.w3.org/2000/svg"
       width="24"
       height="24"
@@ -167,6 +169,7 @@ export function MarketplaceCard({
       {canManage && (
         <div className="flex items-center justify-end">
           <button
+            type="button"
             onClick={(e) => {
               e.stopPropagation();
               onToggle(id, isActive);
diff --git a/apps/web/src/app/(portal)/marketplace/components/MarketplaceSearch.tsx b/apps/web/src/app/(portal)/marketplace/components/MarketplaceSearch.tsx
index bbec58a..6e69c08 100644
--- a/apps/web/src/app/(portal)/marketplace/components/MarketplaceSearch.tsx
+++ b/apps/web/src/app/(portal)/marketplace/components/MarketplaceSearch.tsx
@@ -33,11 +33,12 @@ export function MarketplaceSearch({ onChange }: MarketplaceSearchProps) {
       />
       {value && (
         <button
+          type="button"
           onClick={() => setValue('')}
           className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
           aria-label="Clear search"
         >
-          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+          <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
             <path d="M18 6 6 18" />
             <path d="m6 6 12 12" />
           </svg>
diff --git a/apps/web/src/app/(portal)/marketplace/components/StatusFilter.tsx b/apps/web/src/app/(portal)/marketplace/components/StatusFilter.tsx
index 33565ab..44fc28d 100644
--- a/apps/web/src/app/(portal)/marketplace/components/StatusFilter.tsx
+++ b/apps/web/src/app/(portal)/marketplace/components/StatusFilter.tsx
@@ -24,6 +24,7 @@ export function StatusFilter({ value, counts, onChange }: StatusFilterProps) {
       {tabs.map((tab) => (
         <button
           key={tab.key}
+          type="button"
           role="tab"
           aria-selected={value === tab.key}
           onClick={() => onChange(tab.key)}
diff --git a/apps/web/src/app/(portal)/marketplace/components/Toast.tsx b/apps/web/src/app/(portal)/marketplace/components/Toast.tsx
index 5246f7e..3914901 100644
--- a/apps/web/src/app/(portal)/marketplace/components/Toast.tsx
+++ b/apps/web/src/app/(portal)/marketplace/components/Toast.tsx
@@ -1,5 +1,6 @@
 'use client';
 
+import { useTranslations } from 'next-intl';
 import { create } from 'zustand';
 
 interface Toast {
@@ -27,6 +28,7 @@ export const useToastStore = create<ToastState>()((set) => ({
 }));
 
 export function ToastContainer() {
+  const t = useTranslations('common');
   const toasts = useToastStore((s) => s.toasts);
   const removeToast = useToastStore((s) => s.removeToast);
 
@@ -40,21 +42,23 @@ export function ToastContainer() {
           className="flex items-center gap-3 rounded-lg border border-border bg-card p-4 shadow-lg motion-safe:animate-[slideIn_200ms_ease-out]"
         >
           {toast.type === 'success' ? (
-            <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="text-green-600 dark:text-green-400 shrink-0">
+            <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="text-green-600 dark:text-green-400 shrink-0">
               <path d="M20 6 9 17l-5-5" />
             </svg>
           ) : (
-            <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="text-destructive shrink-0">
+            <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="text-destructive shrink-0">
               <path d="M18 6 6 18" />
               <path d="m6 6 12 12" />
             </svg>
           )}
           <span className="text-sm text-foreground">{toast.message}</span>
           <button
+            type="button"
             onClick={() => removeToast(toast.id)}
+            aria-label={t('close')}
             className="ml-2 text-muted-foreground hover:text-foreground shrink-0"
           >
-            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+            <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
               <path d="M18 6 6 18" />
               <path d="m6 6 12 12" />
             </svg>
diff --git a/apps/web/src/app/(portal)/marketplace/page.tsx b/apps/web/src/app/(portal)/marketplace/page.tsx
index 251b9bd..99b4495 100644
--- a/apps/web/src/app/(portal)/marketplace/page.tsx
+++ b/apps/web/src/app/(portal)/marketplace/page.tsx
@@ -200,6 +200,7 @@ export default function MarketplacePage() {
       ) : modules.length === 0 ? (
         <div className="flex flex-col items-center justify-center min-h-[40vh] text-center">
           <svg
+            aria-hidden="true"
             xmlns="http://www.w3.org/2000/svg"
             width="64"
             height="64"