refactor: remove unused remarks and add quick domain create

Drop remark fields from Zone, Zone domains, proxy routes, WAF rule
groups and IP groups across models, APIs, UI and DB columns (keep
certificate/origin remarks). Add quick-create domain input for short
labels, @ apex and full FQDNs when binding domains.

frontend/app/(main)/proxy-routes/detail/components/proxy-section.tsx

@@ -35,7 +35,6 @@ const reverseProxySchema = z
     tunnel_target_protocol: z.enum(['http', 'https']).optional(),
     pages_project_id: z.string().optional(),
     custom_headers_text: z.string(),
-    remark: z.string().max(255, '备注不能超过 255 个字符'),
   })
   .superRefine((value, context) => {
     if (value.upstream_type === 'direct') {
@@ -137,7 +136,6 @@ export function ProxySection({ route, onRouteUpdate, onSavingChange }: ProxySect
         (route.tunnel_target_protocol as 'http' | 'https') || 'http',
       pages_project_id: route.pages_project_id ? String(route.pages_project_id) : '',
       custom_headers_text: customHeadersToText(route.custom_header_list),
-      remark: route.remark || '',
     },
   });
 
@@ -152,7 +150,6 @@ export function ProxySection({ route, onRouteUpdate, onSavingChange }: ProxySect
         (route.tunnel_target_protocol as 'http' | 'https') || 'http',
       pages_project_id: route.pages_project_id ? String(route.pages_project_id) : '',
       custom_headers_text: customHeadersToText(route.custom_header_list),
-      remark: route.remark || '',
     });
   }, [form, route]);
 
@@ -210,7 +207,6 @@ export function ProxySection({ route, onRouteUpdate, onSavingChange }: ProxySect
                 origin_host: values.origin_host.trim(),
                 upstreams,
                 custom_headers: headers,
-                remark: values.remark.trim(),
                 upstream_type: values.upstream_type,
                 tunnel_node_id:
                   values.upstream_type === 'tunnel' && values.tunnel_id
@@ -417,20 +413,6 @@ export function ProxySection({ route, onRouteUpdate, onSavingChange }: ProxySect
               </FormItem>
             )}
           />
-
-          <FormField
-            control={form.control}
-            name="remark"
-            render={({ field }) => (
-              <FormItem>
-                <FormLabel>备注</FormLabel>
-                <FormControl>
-                  <Textarea placeholder="例如：多活回源，优先使用上海入口" {...field} />
-                </FormControl>
-                <FormMessage />
-              </FormItem>
-            )}
-          />
         </form>
       </Form>
     </SectionShell>