Merge PR #48: feat: add Xiaohongshu source + Reddit public fallback

- Xiaohongshu search via local MCP service (opt-in, zero impact if service not running)
- Reddit public JSON fallback (works with zero API keys)
- Reddit priority: ScrapeCreators -> OpenAI -> public fallback
- Updated env.py: Reddit always available via public fallback

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

vendor/package/dist/lib/twitter-client-search.d.ts

@@ -0,0 +1,19 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import type { SearchResult } from './twitter-client-types.js';
+/** Options for search methods */
+export interface SearchFetchOptions {
+    /** Include raw GraphQL response in `_raw` field */
+    includeRaw?: boolean;
+}
+/** Options for paged search methods */
+export interface SearchPaginationOptions extends SearchFetchOptions {
+    maxPages?: number;
+    /** Starting cursor for pagination (resume from previous fetch) */
+    cursor?: string;
+}
+export interface TwitterClientSearchMethods {
+    search(query: string, count?: number, options?: SearchFetchOptions): Promise<SearchResult>;
+    getAllSearchResults(query: string, options?: SearchPaginationOptions): Promise<SearchResult>;
+}
+export declare function withSearch<TBase extends AbstractConstructor<TwitterClientBase>>(Base: TBase): Mixin<TBase, TwitterClientSearchMethods>;
+//# sourceMappingURL=twitter-client-search.d.ts.map