fix: 修复哔哩哔哩平台封面图无法显示的问题

- 后端 Bilibili 适配器添加 URL 规范化，处理协议相对路径和 http 协议
- 前端 Image 组件添加 referrerPolicy="no-referrer" 绕过 CDN 防盗链

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/frontend/src/components/card/ContentCard.tsx

@@ -35,6 +35,7 @@ export function ContentCard({ item }: ContentCardProps) {
             alt={item.title}
             fill
             unoptimized
+            referrerPolicy="no-referrer"
             className="object-cover"
             loading="lazy"
             sizes="(max-width: 640px) 100vw, (max-width: 960px) 50vw, (max-width: 1240px) 33vw, 25vw"
@@ -84,6 +85,7 @@ export function ContentCard({ item }: ContentCardProps) {
               width={20}
               height={20}
               unoptimized
+              referrerPolicy="no-referrer"
               className="rounded-full object-cover"
               onError={(e) => {
                 (e.target as HTMLImageElement).style.display = "none";

packages/frontend/src/components/detail/DetailPanel.tsx

@@ -46,6 +46,7 @@ export function DetailPanel({ item }: DetailPanelProps) {
             alt={item.title}
             fill
             unoptimized
+            referrerPolicy="no-referrer"
             className="object-cover"
             priority
             sizes="(max-width: 768px) 100vw, 768px"
@@ -87,6 +88,7 @@ export function DetailPanel({ item }: DetailPanelProps) {
               width={40}
               height={40}
               unoptimized
+              referrerPolicy="no-referrer"
               className="rounded-full object-cover"
               onError={(e) => {
                 (e.target as HTMLImageElement).style.display = "none";