重构为Monorepo：拆分xhs/xhh应用与core包并完成双服务部署改造

apps/xhh-mcp/src/platforms/xiaoheihe/target-resolver.ts

@@ -0,0 +1,52 @@
+import { extractLinkIdFromUrl, extractUserIdFromUrl } from './extractors.js';
+
+interface FeedTargetInput {
+  link_id?: string;
+  url?: string;
+}
+
+interface UserTargetInput {
+  user_id?: string;
+  url?: string;
+}
+
+export interface FeedTargetResolved {
+  linkId: string;
+}
+
+export interface UserTargetResolved {
+  userId: string;
+}
+
+function normalizeUrl(url: string): string {
+  const trimmed = url.trim();
+  if (!trimmed) {
+    throw new Error('url cannot be empty');
+  }
+  return trimmed;
+}
+
+export function resolveFeedTarget(input: FeedTargetInput): FeedTargetResolved {
+  const direct = input.link_id?.trim();
+  if (direct) return { linkId: direct };
+
+  if (input.url) {
+    const parsed = extractLinkIdFromUrl(normalizeUrl(input.url));
+    if (parsed) return { linkId: parsed };
+  }
+
+  throw new Error('xhh_get_feed_detail requires link_id or url containing link_id');
+}
+
+export function resolveUserTarget(input: UserTargetInput): UserTargetResolved {
+  const direct = input.user_id?.trim();
+  if (direct) return { userId: direct };
+
+  if (input.url) {
+    const parsed = extractUserIdFromUrl(normalizeUrl(input.url));
+    if (parsed) return { userId: parsed };
+  }
+
+  throw new Error('xhh_get_user_profile requires user_id or url containing user_id');
+}
+