feat(topology): add device description support and polish UI layouts

- Topology: query /api/node-info on node select and display multi-line description
- Topology: widen device node cards and remove SID truncation for full display
- Topology: tune d3-force layout parameters (increased distance & repulsion)
- Topology: fix d3-force string ID matching error ("node not found: 0")
- Settings: switch device description field from Input to multi-line Textarea
- Overview: fix active lines count logic and broken badge layout
- Sidebar: remove redundant Live badge from overview navigation item

src/pages/settings.tsx

@@ -21,6 +21,7 @@ import {
 } from '@/components/ui/card'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'
+import { Textarea } from '@/components/ui/textarea'
 import { Switch } from '@/components/ui/switch'
 import { Slider } from '@/components/ui/slider'
 import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert'
@@ -411,15 +412,16 @@ function SettingsForm({
 
                 <Field className="md:col-span-2">
                   <FieldLabel htmlFor="deviceDescription">设备描述</FieldLabel>
-                  <Input
+                  <Textarea
                     id="deviceDescription"
-                    placeholder="如: 机房 A 区多线聚合网关"
+                    placeholder={'如: 机房 A 区多线聚合网关\n支持多行输入'}
+                    className="min-h-20"
                     value={form.DeviceDescription || ''}
                     onChange={(e) =>
                       setForm((prev) => ({ ...prev, DeviceDescription: e.target.value }))
                     }
                   />
-                  <FieldDescription>本地备注说明信息，不参与网络路由决策</FieldDescription>
+                  <FieldDescription>本地备注说明信息，支持多行，不参与网络路由决策</FieldDescription>
                 </Field>
               </FieldGroup>
             </CardContent>