diff --git a/apps/frontend/src/renderer/components/ChatHistorySidebar.tsx b/apps/frontend/src/renderer/components/ChatHistorySidebar.tsx
index be826def..2d6e9108 100644
--- a/apps/frontend/src/renderer/components/ChatHistorySidebar.tsx
+++ b/apps/frontend/src/renderer/components/ChatHistorySidebar.tsx
@@ -1,4 +1,5 @@
 import { useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import {
   Plus,
   MessageSquare,
@@ -12,6 +13,7 @@ import {
 import { Button } from './ui/button';
 import { Input } from './ui/input';
 import { ScrollArea } from './ui/scroll-area';
+import { Tooltip, TooltipContent, TooltipTrigger } from './ui/tooltip';
 import {
   DropdownMenu,
   DropdownMenuContent,
@@ -50,6 +52,7 @@ export function ChatHistorySidebar({
   onDeleteSession,
   onRenameSession
 }: ChatHistorySidebarProps) {
+  const { t } = useTranslation('common');
   const [editingId, setEditingId] = useState<string | null>(null);
   const [editTitle, setEditTitle] = useState('');
   const [deleteSessionId, setDeleteSessionId] = useState<string | null>(null);
@@ -111,15 +114,20 @@ export function ChatHistorySidebar({
       {/* Header */}
       <div className="flex items-center justify-between border-b border-border px-3 py-3">
         <h3 className="text-sm font-medium text-foreground">Chat History</h3>
-        <Button
-          variant="ghost"
-          size="icon"
-          className="h-7 w-7"
-          onClick={onNewSession}
-          title="New conversation"
-        >
-          <Plus className="h-4 w-4" />
-        </Button>
+        <Tooltip>
+          <TooltipTrigger asChild>
+            <Button
+              variant="ghost"
+              size="icon"
+              className="h-7 w-7"
+              onClick={onNewSession}
+              aria-label={t('accessibility.newConversationAriaLabel')}
+            >
+              <Plus className="h-4 w-4" />
+            </Button>
+          </TooltipTrigger>
+          <TooltipContent>{t('accessibility.newConversationAriaLabel')}</TooltipContent>
+        </Tooltip>
       </div>
 
       {/* Session list */}
@@ -205,6 +213,7 @@ function SessionItem({
   onEditTitleChange,
   onDelete
 }: SessionItemProps) {
+  const { t } = useTranslation('common');
   const handleKeyDown = (e: React.KeyboardEvent) => {
     if (e.key === 'Enter') {
       e.preventDefault();
@@ -229,6 +238,7 @@ function SessionItem({
           size="icon"
           className="h-7 w-7 shrink-0"
           onClick={onSaveEdit}
+          aria-label={t('accessibility.saveEditAriaLabel')}
         >
           <Check className="h-3.5 w-3.5 text-success" />
         </Button>
@@ -237,6 +247,7 @@ function SessionItem({
           size="icon"
           className="h-7 w-7 shrink-0"
           onClick={onCancelEdit}
+          aria-label={t('accessibility.cancelEditAriaLabel')}
         >
           <X className="h-3.5 w-3.5 text-muted-foreground" />
         </Button>
@@ -282,6 +293,7 @@ function SessionItem({
             variant="ghost"
             size="icon"
             className="absolute right-1 top-1/2 -translate-y-1/2 h-6 w-6 opacity-0 group-hover:opacity-100 data-[state=open]:opacity-100 hover:bg-muted-foreground/20 transition-opacity"
+            aria-label={t('accessibility.moreOptionsAriaLabel')}
           >
             <MoreVertical className="h-3.5 w-3.5" />
           </Button>
diff --git a/apps/frontend/src/renderer/components/KanbanBoard.tsx b/apps/frontend/src/renderer/components/KanbanBoard.tsx
index 4eb3c134..30fc3c10 100644
--- a/apps/frontend/src/renderer/components/KanbanBoard.tsx
+++ b/apps/frontend/src/renderer/components/KanbanBoard.tsx
@@ -261,6 +261,7 @@ const DroppableColumn = memo(function DroppableColumn({ status, tasks, onTaskCli
                   )}
                   onClick={onToggleArchived}
                   aria-pressed={showArchived}
+                  aria-label={t('common:accessibility.toggleShowArchivedAriaLabel')}
                 >
                   <Archive className="h-4 w-4" />
                   <span className="absolute -top-1 -right-1 text-[10px] font-medium bg-muted rounded-full min-w-[14px] h-[14px] flex items-center justify-center">
diff --git a/apps/frontend/src/renderer/components/github-issues/components/IssueDetail.tsx b/apps/frontend/src/renderer/components/github-issues/components/IssueDetail.tsx
index df699fd1..87d2a56b 100644
--- a/apps/frontend/src/renderer/components/github-issues/components/IssueDetail.tsx
+++ b/apps/frontend/src/renderer/components/github-issues/components/IssueDetail.tsx
@@ -1,3 +1,4 @@
+import { useTranslation } from 'react-i18next';
 import { ExternalLink, User, Clock, MessageCircle, Sparkles, CheckCircle2, Eye } from 'lucide-react';
 import { Badge } from '../../ui/badge';
 import { Button } from '../../ui/button';
@@ -22,6 +23,7 @@ export function IssueDetail({
   autoFixConfig,
   autoFixQueueItem,
 }: IssueDetailProps) {
+  const { t } = useTranslation('common');
   // Determine which task ID to use - either already linked or just created
   const taskId = linkedTaskId || (investigationResult?.success ? investigationResult.taskId : undefined);
   const hasLinkedTask = !!taskId;
@@ -47,7 +49,7 @@ export function IssueDetail({
               </Badge>
               <span className="text-sm text-muted-foreground">#{issue.number}</span>
             </div>
-            <Button variant="ghost" size="icon" asChild>
+            <Button variant="ghost" size="icon" asChild aria-label={t('accessibility.openOnGitHubAriaLabel')}>
               <a href={issue.htmlUrl} target="_blank" rel="noopener noreferrer">
                 <ExternalLink className="h-4 w-4" />
               </a>
diff --git a/apps/frontend/src/renderer/components/gitlab-issues/components/IssueDetail.tsx b/apps/frontend/src/renderer/components/gitlab-issues/components/IssueDetail.tsx
index ff6e99e1..a51be60b 100644
--- a/apps/frontend/src/renderer/components/gitlab-issues/components/IssueDetail.tsx
+++ b/apps/frontend/src/renderer/components/gitlab-issues/components/IssueDetail.tsx
@@ -20,7 +20,7 @@ const GITLAB_COMPLEXITY_COLORS: Record<string, string> = {
 };
 
 export function IssueDetail({ issue, onInvestigate, investigationResult, linkedTaskId, onViewTask }: IssueDetailProps) {
-  const { t } = useTranslation('gitlab');
+  const { t } = useTranslation(['gitlab', 'common']);
   // Determine which task ID to use - either already linked or just created
   const taskId = linkedTaskId || (investigationResult?.success ? investigationResult.taskId : undefined);
   const hasLinkedTask = !!taskId;
@@ -46,7 +46,7 @@ export function IssueDetail({ issue, onInvestigate, investigationResult, linkedT
               </Badge>
               <span className="text-sm text-muted-foreground">#{issue.iid}</span>
             </div>
-            <Button variant="ghost" size="icon" asChild>
+            <Button variant="ghost" size="icon" asChild aria-label={t('common:accessibility.openOnGitLabAriaLabel')}>
               <a href={issue.webUrl} target="_blank" rel="noopener noreferrer">
                 <ExternalLink className="h-4 w-4" />
               </a>
diff --git a/apps/frontend/src/renderer/components/gitlab-merge-requests/components/MRDetail.tsx b/apps/frontend/src/renderer/components/gitlab-merge-requests/components/MRDetail.tsx
index 624dcefd..db1fcce7 100644
--- a/apps/frontend/src/renderer/components/gitlab-merge-requests/components/MRDetail.tsx
+++ b/apps/frontend/src/renderer/components/gitlab-merge-requests/components/MRDetail.tsx
@@ -1,4 +1,5 @@
 import { useState, useEffect, useMemo, useCallback } from 'react';
+import { useTranslation } from 'react-i18next';
 import {
   ExternalLink,
   User,
@@ -96,6 +97,7 @@ export function MRDetail({
   onMergeMR,
   onApproveMR,
 }: MRDetailProps) {
+  const { t } = useTranslation('common');
   // Selection state for findings
   const [selectedFindingIds, setSelectedFindingIds] = useState<Set<string>>(new Set());
   const [postedFindingIds, setPostedFindingIds] = useState<Set<string>>(new Set());
@@ -355,7 +357,7 @@ export function MRDetail({
               </Badge>
               <span className="text-sm text-muted-foreground">!{mr.iid}</span>
             </div>
-            <Button variant="ghost" size="icon" asChild>
+            <Button variant="ghost" size="icon" asChild aria-label={t('accessibility.openOnGitLabAriaLabel')}>
               <a href={mr.webUrl} target="_blank" rel="noopener noreferrer">
                 <ExternalLink className="h-4 w-4" />
               </a>
diff --git a/apps/frontend/src/renderer/components/ideation/IdeaCard.tsx b/apps/frontend/src/renderer/components/ideation/IdeaCard.tsx
index 0e122afa..dbc2da93 100644
--- a/apps/frontend/src/renderer/components/ideation/IdeaCard.tsx
+++ b/apps/frontend/src/renderer/components/ideation/IdeaCard.tsx
@@ -1,3 +1,4 @@
+import { useTranslation } from 'react-i18next';
 import { ExternalLink, Play, X } from 'lucide-react';
 import { Button } from '../ui/button';
 import { Badge } from '../ui/badge';
@@ -45,6 +46,7 @@ interface IdeaCardProps {
 }
 
 export function IdeaCard({ idea, isSelected, onClick, onConvert, onGoToTask, onDismiss, onToggleSelect }: IdeaCardProps) {
+  const { t } = useTranslation('common');
   const isDismissed = idea.status === 'dismissed';
   const isArchived = idea.status === 'archived';
   const isConverted = idea.status === 'converted';
@@ -70,6 +72,7 @@ export function IdeaCard({ idea, isSelected, onClick, onConvert, onGoToTask, onD
             checked={isSelected}
             onCheckedChange={() => onToggleSelect(idea.id)}
             className="data-[state=checked]:bg-primary data-[state=checked]:border-primary"
+            aria-label={t('accessibility.selectIdeaAriaLabel', { title: idea.title })}
           />
         </div>
 
@@ -134,11 +137,12 @@ export function IdeaCard({ idea, isSelected, onClick, onConvert, onGoToTask, onD
                       e.stopPropagation();
                       onConvert(idea);
                     }}
+                    aria-label={t('accessibility.convertToTaskAriaLabel')}
                   >
                     <Play className="h-4 w-4" />
                   </Button>
                 </TooltipTrigger>
-                <TooltipContent>Convert to Task</TooltipContent>
+                <TooltipContent>{t('accessibility.convertToTaskAriaLabel')}</TooltipContent>
               </Tooltip>
               <Tooltip>
                 <TooltipTrigger asChild>
@@ -150,11 +154,12 @@ export function IdeaCard({ idea, isSelected, onClick, onConvert, onGoToTask, onD
                       e.stopPropagation();
                       onDismiss(idea);
                     }}
+                    aria-label={t('accessibility.dismissAriaLabel')}
                   >
                     <X className="h-4 w-4" />
                   </Button>
                 </TooltipTrigger>
-                <TooltipContent>Dismiss</TooltipContent>
+                <TooltipContent>{t('accessibility.dismissAriaLabel')}</TooltipContent>
               </Tooltip>
             </div>
           )}
@@ -171,11 +176,12 @@ export function IdeaCard({ idea, isSelected, onClick, onConvert, onGoToTask, onD
                       e.stopPropagation();
                       onGoToTask(idea.taskId!);
                     }}
+                    aria-label={t('accessibility.goToTaskAriaLabel')}
                   >
                     <ExternalLink className="h-4 w-4" />
                   </Button>
                 </TooltipTrigger>
-                <TooltipContent>Go to Task</TooltipContent>
+                <TooltipContent>{t('accessibility.goToTaskAriaLabel')}</TooltipContent>
               </Tooltip>
             </div>
           )}
@@ -192,11 +198,12 @@ export function IdeaCard({ idea, isSelected, onClick, onConvert, onGoToTask, onD
                       e.stopPropagation();
                       onGoToTask(idea.taskId!);
                     }}
+                    aria-label={t('accessibility.goToTaskAriaLabel')}
                   >
                     <ExternalLink className="h-4 w-4" />
                   </Button>
                 </TooltipTrigger>
-                <TooltipContent>Go to Task</TooltipContent>
+                <TooltipContent>{t('accessibility.goToTaskAriaLabel')}</TooltipContent>
               </Tooltip>
             </div>
           )}
diff --git a/apps/frontend/src/renderer/components/ideation/IdeaDetailPanel.tsx b/apps/frontend/src/renderer/components/ideation/IdeaDetailPanel.tsx
index 35b426b2..ec4b9475 100644
--- a/apps/frontend/src/renderer/components/ideation/IdeaDetailPanel.tsx
+++ b/apps/frontend/src/renderer/components/ideation/IdeaDetailPanel.tsx
@@ -1,3 +1,4 @@
+import { useTranslation } from 'react-i18next';
 import { ChevronRight, ExternalLink, Lightbulb, Play, X } from 'lucide-react';
 import { Button } from '../ui/button';
 import { Badge } from '../ui/badge';
@@ -32,6 +33,7 @@ interface IdeaDetailPanelProps {
 }
 
 export function IdeaDetailPanel({ idea, onClose, onConvert, onGoToTask, onDismiss }: IdeaDetailPanelProps) {
+  const { t } = useTranslation('common');
   const isDismissed = idea.status === 'dismissed';
   const isConverted = idea.status === 'converted';
 
@@ -54,7 +56,7 @@ export function IdeaDetailPanel({ idea, onClose, onConvert, onGoToTask, onDismis
             </div>
             <h2 className="font-semibold">{idea.title}</h2>
           </div>
-          <Button variant="ghost" size="icon" onClick={onClose}>
+          <Button variant="ghost" size="icon" onClick={onClose} aria-label={t('accessibility.closePanelAriaLabel')}>
             <ChevronRight className="h-4 w-4" />
           </Button>
         </div>
diff --git a/apps/frontend/src/renderer/components/ideation/IdeationHeader.tsx b/apps/frontend/src/renderer/components/ideation/IdeationHeader.tsx
index b6e811bb..fc439b31 100644
--- a/apps/frontend/src/renderer/components/ideation/IdeationHeader.tsx
+++ b/apps/frontend/src/renderer/components/ideation/IdeationHeader.tsx
@@ -1,3 +1,4 @@
+import { useTranslation } from 'react-i18next';
 import { Lightbulb, Eye, EyeOff, Settings2, Plus, Trash2, RefreshCw, CheckSquare, X } from 'lucide-react';
 import { Button } from '../ui/button';
 import { Badge } from '../ui/badge';
@@ -39,6 +40,7 @@ export function IdeationHeader({
   hasActiveIdeas,
   canAddMore
 }: IdeationHeaderProps) {
+  const { t } = useTranslation('common');
   const hasSelection = selectedCount > 0;
   return (
     <div className="shrink-0 border-b border-border p-4 bg-card/50">
@@ -75,11 +77,12 @@ export function IdeationHeader({
                     variant="ghost"
                     size="icon"
                     onClick={onClearSelection}
+                    aria-label={t('accessibility.clearSelectionAriaLabel')}
                   >
                     <X className="h-4 w-4" />
                   </Button>
                 </TooltipTrigger>
-                <TooltipContent>Clear selection</TooltipContent>
+                <TooltipContent>{t('accessibility.clearSelectionAriaLabel')}</TooltipContent>
               </Tooltip>
               <div className="w-px h-6 bg-border mx-1" />
             </>
@@ -91,11 +94,12 @@ export function IdeationHeader({
                     variant="ghost"
                     size="icon"
                     onClick={onSelectAll}
+                    aria-label={t('accessibility.selectAllAriaLabel')}
                   >
                     <CheckSquare className="h-4 w-4" />
                   </Button>
                 </TooltipTrigger>
-                <TooltipContent>Select all</TooltipContent>
+                <TooltipContent>{t('accessibility.selectAllAriaLabel')}</TooltipContent>
               </Tooltip>
             )
           )}
@@ -107,12 +111,13 @@ export function IdeationHeader({
                 variant={showDismissed ? 'secondary' : 'outline'}
                 size="icon"
                 onClick={onToggleShowDismissed}
+                aria-label={showDismissed ? t('accessibility.hideDismissedAriaLabel') : t('accessibility.showDismissedAriaLabel')}
               >
                 {showDismissed ? <Eye className="h-4 w-4" /> : <EyeOff className="h-4 w-4" />}
               </Button>
             </TooltipTrigger>
             <TooltipContent>
-              {showDismissed ? 'Hide dismissed' : 'Show dismissed'}
+              {showDismissed ? t('accessibility.hideDismissedAriaLabel') : t('accessibility.showDismissedAriaLabel')}
             </TooltipContent>
           </Tooltip>
           <Tooltip>
@@ -121,11 +126,12 @@ export function IdeationHeader({
                 variant="outline"
                 size="icon"
                 onClick={onOpenConfig}
+                aria-label={t('accessibility.configureAriaLabel')}
               >
                 <Settings2 className="h-4 w-4" />
               </Button>
             </TooltipTrigger>
-            <TooltipContent>Configure</TooltipContent>
+            <TooltipContent>{t('accessibility.configureAriaLabel')}</TooltipContent>
           </Tooltip>
           {canAddMore && (
             <Tooltip>
@@ -133,12 +139,13 @@ export function IdeationHeader({
                 <Button
                   variant="outline"
                   onClick={onOpenAddMore}
+                  aria-label={t('accessibility.addMoreAriaLabel')}
                 >
                   <Plus className="h-4 w-4 mr-1" />
                   Add More
                 </Button>
               </TooltipTrigger>
-              <TooltipContent>Add more ideation types</TooltipContent>
+              <TooltipContent>{t('accessibility.addMoreAriaLabel')}</TooltipContent>
             </Tooltip>
           )}
           {hasActiveIdeas && !hasSelection && (
@@ -149,20 +156,21 @@ export function IdeationHeader({
                   size="icon"
                   className="text-muted-foreground hover:text-destructive"
                   onClick={onDismissAll}
+                  aria-label={t('accessibility.dismissAllAriaLabel')}
                 >
                   <Trash2 className="h-4 w-4" />
                 </Button>
               </TooltipTrigger>
-              <TooltipContent>Dismiss all ideas</TooltipContent>
+              <TooltipContent>{t('accessibility.dismissAllAriaLabel')}</TooltipContent>
             </Tooltip>
           )}
           <Tooltip>
             <TooltipTrigger asChild>
-              <Button variant="outline" size="icon" onClick={onRefresh}>
+              <Button variant="outline" size="icon" onClick={onRefresh} aria-label={t('accessibility.regenerateIdeasAriaLabel')}>
                 <RefreshCw className="h-4 w-4" />
               </Button>
             </TooltipTrigger>
-            <TooltipContent>Regenerate Ideas</TooltipContent>
+            <TooltipContent>{t('accessibility.regenerateIdeasAriaLabel')}</TooltipContent>
           </Tooltip>
         </div>
       </div>
diff --git a/apps/frontend/src/renderer/components/settings/AdvancedSettings.tsx b/apps/frontend/src/renderer/components/settings/AdvancedSettings.tsx
index 5b58abe2..ac3d05fa 100644
--- a/apps/frontend/src/renderer/components/settings/AdvancedSettings.tsx
+++ b/apps/frontend/src/renderer/components/settings/AdvancedSettings.tsx
@@ -362,6 +362,7 @@ export function AdvancedSettings({ settings, onSettingsChange, section, version
                   size="icon"
                   className="h-6 w-6"
                   onClick={dismissStableDowngrade}
+                  aria-label={t('common:accessibility.dismissAriaLabel')}
                 >
                   <X className="h-4 w-4" />
                 </Button>
diff --git a/apps/frontend/src/renderer/components/settings/DevToolsSettings.tsx b/apps/frontend/src/renderer/components/settings/DevToolsSettings.tsx
index 2dd82d62..24e1cd65 100644
--- a/apps/frontend/src/renderer/components/settings/DevToolsSettings.tsx
+++ b/apps/frontend/src/renderer/components/settings/DevToolsSettings.tsx
@@ -293,6 +293,7 @@ export function DevToolsSettings({ settings, onSettingsChange }: DevToolsSetting
                       handleCustomIDEPathChange(result);
                     }
                   }}
+                  aria-label={t('common:accessibility.browseFilesAriaLabel')}
                 >
                   <FolderOpen className="h-4 w-4" />
                 </Button>
@@ -354,6 +355,7 @@ export function DevToolsSettings({ settings, onSettingsChange }: DevToolsSetting
                       handleCustomTerminalPathChange(result);
                     }
                   }}
+                  aria-label={t('common:accessibility.browseFilesAriaLabel')}
                 >
                   <FolderOpen className="h-4 w-4" />
                 </Button>
diff --git a/apps/frontend/src/renderer/components/settings/IntegrationSettings.tsx b/apps/frontend/src/renderer/components/settings/IntegrationSettings.tsx
index 6cfbc706..fbc0dfa0 100644
--- a/apps/frontend/src/renderer/components/settings/IntegrationSettings.tsx
+++ b/apps/frontend/src/renderer/components/settings/IntegrationSettings.tsx
@@ -25,6 +25,7 @@ import { Input } from '../ui/input';
 import { Label } from '../ui/label';
 import { Switch } from '../ui/switch';
 import { cn } from '../../lib/utils';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 import { SettingsSection } from './SettingsSection';
 import { loadClaudeProfiles as loadGlobalClaudeProfiles } from '../../stores/claude-profile-store';
 import { useClaudeLoginTerminal } from '../../hooks/useClaudeLoginTerminal';
@@ -358,6 +359,7 @@ export function IntegrationSettings({ settings, onSettingsChange, isOpen }: Inte
                                 size="icon"
                                 onClick={handleRenameProfile}
                                 className="h-7 w-7 text-success hover:text-success hover:bg-success/10"
+                                aria-label={t('common:accessibility.saveEditAriaLabel')}
                               >
                                 <Check className="h-3 w-3" />
                               </Button>
@@ -366,6 +368,7 @@ export function IntegrationSettings({ settings, onSettingsChange, isOpen }: Inte
                                 size="icon"
                                 onClick={cancelEditingProfile}
                                 className="h-7 w-7 text-muted-foreground hover:text-foreground"
+                                aria-label={t('common:accessibility.cancelEditAriaLabel')}
                               >
                                 <X className="h-3 w-3" />
                               </Button>
@@ -422,20 +425,25 @@ export function IntegrationSettings({ settings, onSettingsChange, isOpen }: Inte
                             </Button>
                           ) : (
                             /* Re-authenticate button for already authenticated profiles */
-                            <Button
-                              variant="ghost"
-                              size="icon"
-                              onClick={() => handleAuthenticateProfile(profile.id)}
-                              disabled={authenticatingProfileId === profile.id}
-                              className="h-7 w-7 text-muted-foreground hover:text-foreground"
-                              title="Re-authenticate profile"
-                            >
-                              {authenticatingProfileId === profile.id ? (
-                                <Loader2 className="h-3 w-3 animate-spin" />
-                              ) : (
-                                <RefreshCw className="h-3 w-3" />
-                              )}
-                            </Button>
+                            <Tooltip>
+                              <TooltipTrigger asChild>
+                                <Button
+                                  variant="ghost"
+                                  size="icon"
+                                  onClick={() => handleAuthenticateProfile(profile.id)}
+                                  disabled={authenticatingProfileId === profile.id}
+                                  className="h-7 w-7 text-muted-foreground hover:text-foreground"
+                                  aria-label={t('common:accessibility.refreshAriaLabel')}
+                                >
+                                  {authenticatingProfileId === profile.id ? (
+                                    <Loader2 className="h-3 w-3 animate-spin" />
+                                  ) : (
+                                    <RefreshCw className="h-3 w-3" />
+                                  )}
+                                </Button>
+                              </TooltipTrigger>
+                              <TooltipContent>{t('common:accessibility.reAuthenticateProfileAriaLabel')}</TooltipContent>
+                            </Tooltip>
                           )}
                           {profile.id !== activeProfileId && (
                             <Button
@@ -449,43 +457,60 @@ export function IntegrationSettings({ settings, onSettingsChange, isOpen }: Inte
                             </Button>
                           )}
                           {/* Toggle token entry button */}
-                          <Button
-                            variant="ghost"
-                            size="icon"
-                            onClick={() => toggleTokenEntry(profile.id)}
-                            className="h-7 w-7 text-muted-foreground hover:text-foreground"
-                            title={expandedTokenProfileId === profile.id ? "Hide token entry" : "Enter token manually"}
-                          >
-                            {expandedTokenProfileId === profile.id ? (
-                              <ChevronDown className="h-3 w-3" />
-                            ) : (
-                              <ChevronRight className="h-3 w-3" />
-                            )}
-                          </Button>
-                          <Button
-                            variant="ghost"
-                            size="icon"
-                            onClick={() => startEditingProfile(profile)}
-                            className="h-7 w-7 text-muted-foreground hover:text-foreground"
-                            title="Rename profile"
-                          >
-                            <Pencil className="h-3 w-3" />
-                          </Button>
+                          <Tooltip>
+                            <TooltipTrigger asChild>
+                              <Button
+                                variant="ghost"
+                                size="icon"
+                                onClick={() => toggleTokenEntry(profile.id)}
+                                className="h-7 w-7 text-muted-foreground hover:text-foreground"
+                                aria-label={expandedTokenProfileId === profile.id ? t('common:accessibility.collapseAriaLabel') : t('common:accessibility.expandAriaLabel')}
+                              >
+                                {expandedTokenProfileId === profile.id ? (
+                                  <ChevronDown className="h-3 w-3" />
+                                ) : (
+                                  <ChevronRight className="h-3 w-3" />
+                                )}
+                              </Button>
+                            </TooltipTrigger>
+                            <TooltipContent>
+                              {expandedTokenProfileId === profile.id ? t('common:accessibility.hideTokenEntryAriaLabel') : t('common:accessibility.enterTokenManuallyAriaLabel')}
+                            </TooltipContent>
+                          </Tooltip>
+                          <Tooltip>
+                            <TooltipTrigger asChild>
+                              <Button
+                                variant="ghost"
+                                size="icon"
+                                onClick={() => startEditingProfile(profile)}
+                                className="h-7 w-7 text-muted-foreground hover:text-foreground"
+                                aria-label={t('common:accessibility.renameAriaLabel')}
+                              >
+                                <Pencil className="h-3 w-3" />
+                              </Button>
+                            </TooltipTrigger>
+                            <TooltipContent>{t('common:accessibility.renameProfileAriaLabel')}</TooltipContent>
+                          </Tooltip>
                           {!profile.isDefault && (
-                            <Button
-                              variant="ghost"
-                              size="icon"
-                              onClick={() => handleDeleteProfile(profile.id)}
-                              disabled={deletingProfileId === profile.id}
-                              className="h-7 w-7 text-destructive hover:text-destructive hover:bg-destructive/10"
-                              title="Delete profile"
-                            >
-                              {deletingProfileId === profile.id ? (
-                                <Loader2 className="h-3 w-3 animate-spin" />
-                              ) : (
-                                <Trash2 className="h-3 w-3" />
-                              )}
-                            </Button>
+                            <Tooltip>
+                              <TooltipTrigger asChild>
+                                <Button
+                                  variant="ghost"
+                                  size="icon"
+                                  onClick={() => handleDeleteProfile(profile.id)}
+                                  disabled={deletingProfileId === profile.id}
+                                  className="h-7 w-7 text-destructive hover:text-destructive hover:bg-destructive/10"
+                                  aria-label={t('common:accessibility.deleteAriaLabel')}
+                                >
+                                  {deletingProfileId === profile.id ? (
+                                    <Loader2 className="h-3 w-3 animate-spin" />
+                                  ) : (
+                                    <Trash2 className="h-3 w-3" />
+                                  )}
+                                </Button>
+                              </TooltipTrigger>
+                              <TooltipContent>{t('common:accessibility.deleteProfileAriaLabel')}</TooltipContent>
+                            </Tooltip>
                           )}
                         </div>
                       )}
diff --git a/apps/frontend/src/shared/i18n/locales/en/common.json b/apps/frontend/src/shared/i18n/locales/en/common.json
index 426e32fd..4c66de42 100644
--- a/apps/frontend/src/shared/i18n/locales/en/common.json
+++ b/apps/frontend/src/shared/i18n/locales/en/common.json
@@ -21,7 +21,38 @@
     "learnMoreAriaLabel": "Learn more (opens in new window)",
     "toggleFolder": "Toggle {{name}} folder",
     "expandFolder": "Expand {{name}} folder",
-    "collapseFolder": "Collapse {{name}} folder"
+    "collapseFolder": "Collapse {{name}} folder",
+    "newConversationAriaLabel": "New conversation",
+    "saveEditAriaLabel": "Save",
+    "cancelEditAriaLabel": "Cancel",
+    "moreOptionsAriaLabel": "More options",
+    "closePanelAriaLabel": "Close panel",
+    "openOnGitHubAriaLabel": "Open on GitHub (opens in new window)",
+    "openOnGitLabAriaLabel": "Open on GitLab (opens in new window)",
+    "toggleShowArchivedAriaLabel": "Toggle show archived tasks",
+    "clearSelectionAriaLabel": "Clear selection",
+    "selectAllAriaLabel": "Select all",
+    "showDismissedAriaLabel": "Show dismissed",
+    "hideDismissedAriaLabel": "Hide dismissed",
+    "configureAriaLabel": "Configure",
+    "addMoreAriaLabel": "Add more",
+    "dismissAllAriaLabel": "Dismiss all ideas",
+    "regenerateIdeasAriaLabel": "Regenerate ideas",
+    "dismissAriaLabel": "Dismiss",
+    "browseFilesAriaLabel": "Browse files",
+    "renameAriaLabel": "Rename",
+    "deleteAriaLabel": "Delete",
+    "refreshAriaLabel": "Refresh",
+    "expandAriaLabel": "Expand",
+    "collapseAriaLabel": "Collapse",
+    "selectIdeaAriaLabel": "Select idea: {{title}}",
+    "convertToTaskAriaLabel": "Convert to task",
+    "goToTaskAriaLabel": "Go to task",
+    "reAuthenticateProfileAriaLabel": "Re-authenticate profile",
+    "hideTokenEntryAriaLabel": "Hide token entry",
+    "enterTokenManuallyAriaLabel": "Enter token manually",
+    "renameProfileAriaLabel": "Rename profile",
+    "deleteProfileAriaLabel": "Delete profile"
   },
   "buttons": {
     "save": "Save",
diff --git a/apps/frontend/src/shared/i18n/locales/fr/common.json b/apps/frontend/src/shared/i18n/locales/fr/common.json
index dbec9b02..85caf6fc 100644
--- a/apps/frontend/src/shared/i18n/locales/fr/common.json
+++ b/apps/frontend/src/shared/i18n/locales/fr/common.json
@@ -21,7 +21,38 @@
     "learnMoreAriaLabel": "En savoir plus (s'ouvre dans une nouvelle fenêtre)",
     "toggleFolder": "Basculer le dossier {{name}}",
     "expandFolder": "Déplier le dossier {{name}}",
-    "collapseFolder": "Replier le dossier {{name}}"
+    "collapseFolder": "Replier le dossier {{name}}",
+    "newConversationAriaLabel": "Nouvelle conversation",
+    "saveEditAriaLabel": "Enregistrer",
+    "cancelEditAriaLabel": "Annuler",
+    "moreOptionsAriaLabel": "Plus d'options",
+    "closePanelAriaLabel": "Fermer le panneau",
+    "openOnGitHubAriaLabel": "Ouvrir sur GitHub (s'ouvre dans une nouvelle fenêtre)",
+    "openOnGitLabAriaLabel": "Ouvrir sur GitLab (s'ouvre dans une nouvelle fenêtre)",
+    "toggleShowArchivedAriaLabel": "Afficher/masquer les tâches archivées",
+    "clearSelectionAriaLabel": "Effacer la sélection",
+    "selectAllAriaLabel": "Tout sélectionner",
+    "showDismissedAriaLabel": "Afficher les rejetées",
+    "hideDismissedAriaLabel": "Masquer les rejetées",
+    "configureAriaLabel": "Configurer",
+    "addMoreAriaLabel": "Ajouter plus",
+    "dismissAllAriaLabel": "Rejeter toutes les idées",
+    "regenerateIdeasAriaLabel": "Régénérer les idées",
+    "dismissAriaLabel": "Ignorer",
+    "browseFilesAriaLabel": "Parcourir les fichiers",
+    "renameAriaLabel": "Renommer",
+    "deleteAriaLabel": "Supprimer",
+    "refreshAriaLabel": "Actualiser",
+    "expandAriaLabel": "Développer",
+    "collapseAriaLabel": "Réduire",
+    "selectIdeaAriaLabel": "Sélectionner l'idée : {{title}}",
+    "convertToTaskAriaLabel": "Convertir en tâche",
+    "goToTaskAriaLabel": "Aller à la tâche",
+    "reAuthenticateProfileAriaLabel": "Ré-authentifier le profil",
+    "hideTokenEntryAriaLabel": "Masquer la saisie du jeton",
+    "enterTokenManuallyAriaLabel": "Saisir le jeton manuellement",
+    "renameProfileAriaLabel": "Renommer le profil",
+    "deleteProfileAriaLabel": "Supprimer le profil"
   },
   "buttons": {
     "save": "Enregistrer",