fix: Add Audit Logs navigation to Admin Console settings (refs #10)

The routes and screen components for AdminLogsPage were implemented but
the navigation links to access them were missing from both desktop and
mobile Settings pages.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/pages/SettingsPage.tsx

@@ -572,6 +572,30 @@ export const SettingsPage: React.FC = () => {
                   </MuiButton>
                 </ListItemSecondaryAction>
               </ListItem>
+              <Divider />
+              <ListItem>
+                <ListItemText
+                  primary="Audit Logs"
+                  secondary="View system activity and audit logs"
+                  sx={{ pl: 7 }}
+                />
+                <ListItemSecondaryAction>
+                  <MuiButton
+                    variant="contained"
+                    size="small"
+                    onClick={() => navigate('/garage/settings/admin/logs')}
+                    sx={{
+                      backgroundColor: 'primary.main',
+                      color: 'primary.contrastText',
+                      '&:hover': {
+                        backgroundColor: 'primary.dark'
+                      }
+                    }}
+                  >
+                    View
+                  </MuiButton>
+                </ListItemSecondaryAction>
+              </ListItem>
             </List>
           </Card>
         )}