feat(i18n): localize task-header, task-row and prime-schedule tooltips

Replace hardcoded tooltips with loc keys (kill-session, delete-task, toggle-subtasks, agent-suggested, star, remove-schedule) and drop the unused console.maximizeTip key; en/de kept in parity.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/ClaudeDo.Ui/Views/Islands/TaskRowView.axaml

@@ -78,7 +78,8 @@
                 CommandParameter="{Binding}"
                 Classes="icon-btn"
                 Width="18" Height="18"
-                VerticalAlignment="Center">
+                VerticalAlignment="Center"
+                ToolTip.Tip="{loc:Tr tasks.toggleSubtasksTip}">
           <Panel>
             <TextBlock Classes="meta" Text="▾" IsVisible="{Binding IsExpanded}"
                        VerticalAlignment="Center" HorizontalAlignment="Center"/>
@@ -141,7 +142,7 @@
                       Data="{StaticResource Icon.AgentSuggested}"
                       Foreground="#5C8FA8"
                       IsVisible="{Binding IsAgentSuggested}"
-                      ToolTip.Tip="Suggested by the agent"/>
+                      ToolTip.Tip="{loc:Tr tasks.agentSuggestedTip}"/>
 
             <!-- Status chip -->
             <Border Classes="chip"
@@ -211,7 +212,8 @@
                 Classes.on="{Binding IsStarred}"
                 VerticalAlignment="Top" Margin="0,2,0,0"
                 Command="{Binding $parent[ItemsControl].((vm:TasksIslandViewModel)DataContext).ToggleStarCommand}"
-                CommandParameter="{Binding}">
+                CommandParameter="{Binding}"
+                ToolTip.Tip="{loc:Tr details.starTip}">
           <PathIcon Width="14" Height="14" Data="{StaticResource Icon.Star}"/>
         </Button>
         </Grid>