fix(ui): stop review-feedback field clipping placeholder and typed text

Shorten the review-prompt placeholder and localize it (session.reviewFeedbackPlaceholder,
en+de) instead of a hardcoded string that overran the narrow column. Switch the growing
TextBox's VerticalContentAlignment from Center to Top so multi-line input grows downward
instead of being clipped top/bottom, add an auto scrollbar past MaxHeight, and top-align
the prompt glyph and Resume button to match.

src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml

@@ -249,7 +249,7 @@
                        FontFamily="{StaticResource MonoFont}"
                        FontSize="{StaticResource FontSizeMono}"
                        Foreground="{DynamicResource AccentBrush}"
-                       VerticalAlignment="Center" Margin="0,0,8,0" />
+                       VerticalAlignment="Top" Margin="0,2,8,0" />
             <TextBox Grid.Column="1"
                      Name="ReviewInput"
                      Classes="review-prompt"
@@ -258,12 +258,13 @@
                      AcceptsReturn="True"
                      TextWrapping="Wrap"
                      MaxHeight="160"
-                     PlaceholderText="Feedback for the next run…"
-                     VerticalContentAlignment="Center"
+                     PlaceholderText="{loc:Tr session.reviewFeedbackPlaceholder}"
+                     VerticalContentAlignment="Top"
+                     ScrollViewer.VerticalScrollBarVisibility="Auto"
                      FontFamily="{StaticResource MonoFont}"
                      FontSize="{StaticResource FontSizeMono}" />
             <Button Grid.Column="2" Classes="prompt-action accent" Content="[Resume]"
-                    VerticalAlignment="Center" Margin="12,0,0,0"
+                    VerticalAlignment="Top" Margin="12,2,0,0"
                     ToolTip.Tip="{loc:Tr session.reviewContinueTip}"
                     Command="{Binding RejectReviewCommand}" />
           </Grid>