diff --git a/apps/desktop/src/addons/builtin.ai-assistant/AiChatComponent.tsx b/apps/desktop/src/addons/builtin.ai-assistant/AiChatComponent.tsx
index 19952c6f..ef88b5ba 100644
--- a/apps/desktop/src/addons/builtin.ai-assistant/AiChatComponent.tsx
+++ b/apps/desktop/src/addons/builtin.ai-assistant/AiChatComponent.tsx
@@ -713,7 +713,15 @@ const AiChatComponent: React.FC = () => {
         )}
 
         {/* Chat messages */}
-        <div ref={scrollRef} className="flex-1 overflow-y-auto p-4 space-y-4 scrollbar-thin bg-[#0e0e0e]">
+        <div
+          ref={scrollRef}
+          role="log"
+          aria-live="polite"
+          aria-relevant="additions text"
+          aria-busy={isTyping}
+          aria-label={t('ai.chat_log_label')}
+          className="flex-1 overflow-y-auto p-4 space-y-4 scrollbar-thin bg-[#0e0e0e]"
+        >
           {activeSession?.messages.map((msg, i) => (
             <div key={i} className={`flex ${msg.role === "user" ? "justify-end" : "justify-start"}`}>
               <div
diff --git a/apps/desktop/src/addons/builtin.git-explorer/GitExplorerComponent.tsx b/apps/desktop/src/addons/builtin.git-explorer/GitExplorerComponent.tsx
index 48103453..8497b833 100644
--- a/apps/desktop/src/addons/builtin.git-explorer/GitExplorerComponent.tsx
+++ b/apps/desktop/src/addons/builtin.git-explorer/GitExplorerComponent.tsx
@@ -768,13 +768,26 @@ const GitExplorerComponent: React.FC = () => {
           </div>
         ) : (
           <div className="flex flex-col h-full">
-            {gitFeedback && (
-              <div className="px-3 py-2 bg-white/[0.03] border-b border-[#1a1a1a] border-l-2 border-l-white/40 text-[11px] text-white/80 flex items-center gap-2">
-                <span className="truncate">{gitFeedback}</span>
-              </div>
-            )}
+            {/* Live regions must stay mounted so screen readers can observe
+                text changes; conditional mounting would hide the update. */}
+            <div
+              role="status"
+              aria-live="polite"
+              aria-atomic="true"
+              className={
+                gitFeedback
+                  ? "px-3 py-2 bg-white/[0.03] border-b border-[#1a1a1a] border-l-2 border-l-white/40 text-[11px] text-white/80 flex items-center gap-2"
+                  : "sr-only"
+              }
+            >
+              <span className="truncate">{gitFeedback}</span>
+            </div>
             {hasConflicts && (
-              <div className="px-3 py-2 bg-red-500/10 border-b border-red-500/20 border-l-2 border-l-red-400 text-[11px] text-red-200 flex items-center gap-2">
+              <div
+                role="alert"
+                aria-live="assertive"
+                className="px-3 py-2 bg-red-500/10 border-b border-red-500/20 border-l-2 border-l-red-400 text-[11px] text-red-200 flex items-center gap-2"
+              >
                 <AlertTriangle size={12} className="shrink-0 text-red-400" />
                 <span>{t('git.conflicts.banner')}</span>
               </div>
diff --git a/apps/desktop/src/api/builtin.l10n.ts b/apps/desktop/src/api/builtin.l10n.ts
index faa1b10a..c5f2d3a6 100644
--- a/apps/desktop/src/api/builtin.l10n.ts
+++ b/apps/desktop/src/api/builtin.l10n.ts
@@ -258,6 +258,7 @@ export function registerBuiltinTranslations() {
         'ai.status.badge.ready': 'Ready',
         'ai.status.badge.busy': 'Busy',
         'ai.disclaimer': 'Trixty AI can make mistakes. Check important info.',
+        'ai.chat_log_label': 'AI chat transcript',
 
         'terminal.error_connect': 'Error connecting to terminal: ',
         'editor.empty_desc': 'Select a file from the explorer to begin',
@@ -635,6 +636,7 @@ export function registerBuiltinTranslations() {
         'ai.status.badge.ready': 'Listo',
         'ai.status.badge.busy': 'Ocupado',
         'ai.disclaimer': 'Trixty AI puede cometer errores. Verifica info importante.',
+        'ai.chat_log_label': 'Transcripción del chat de IA',
 
         'terminal.error_connect': 'Error al conectar con la terminal: ',
         'editor.empty_desc': 'Selecciona un archivo del explorador para comenzar',
diff --git a/apps/desktop/src/components/UpdaterDialog.tsx b/apps/desktop/src/components/UpdaterDialog.tsx
index 06061f63..88030dfe 100644
--- a/apps/desktop/src/components/UpdaterDialog.tsx
+++ b/apps/desktop/src/components/UpdaterDialog.tsx
@@ -112,8 +112,34 @@ const UpdaterDialog: React.FC = () => {
     }
   };
 
+  // Build the string AT should announce for the current phase. Progress
+  // percentage is intentionally omitted because `updater-progress` fires
+  // on every chunk and would flood screen readers if it lived inside a
+  // live region.
+  const getAnnouncement = (): string => {
+    switch (state.phase) {
+      case "checking": return t('updater.checking');
+      case "up-to-date": return `${getDialogTitle()}. ${t('updater.uptodate')}`;
+      case "available": return `${getDialogTitle()}. ${t('updater.new_version')} ${state.version}`;
+      case "downloading": return t('updater.downloading');
+      case "ready": return `${getDialogTitle()}. ${t('updater.relaunching')}`;
+      case "error": return `${getDialogTitle()}. ${state.message}`;
+      default: return getDialogTitle();
+    }
+  };
+
   return (
     <div className="fixed bottom-6 right-6 z-[9999] animate-in slide-in-from-bottom-4 fade-in duration-300">
+      {/* Dedicated live region so only the phase text is announced — not
+          the whole toast with buttons, and not every frame of the
+          `updater-progress` stream. Role escalates to `alert` on error. */}
+      <span
+        role={state.phase === "error" ? "alert" : "status"}
+        aria-live={state.phase === "error" ? "assertive" : "polite"}
+        className="sr-only"
+      >
+        {getAnnouncement()}
+      </span>
       <div className="w-[340px] bg-[#111] border border-[#262626] rounded-2xl shadow-[0_8px_40px_rgba(0,0,0,0.6)] overflow-hidden">
 
         {/* Header */}