feat: Go backend, enhanced search, new widgets, Docker deploy

Major changes:
- Add Go backend (backend/) with microservices architecture
- Enhanced master-agents-svc: reranker, content-classifier, stealth-crawler,
  proxy-manager, media-search, fastClassifier, language detection
- New web-svc widgets: KnowledgeCard, ProductCard, ProfileCard, VideoCard,
  UnifiedCard, CardGallery, InlineImageGallery, SourcesPanel, RelatedQuestions
- Improved discover-svc with discover-db integration
- Docker deployment improvements (Caddyfile, vendor.sh, BUILD.md)
- Library-svc: project_id schema migration
- Remove deprecated finance-svc and travel-svc
- Localization improvements across services

Made-with: Cursor

services/master-agents-svc/src/lib/actions/social_search.ts

@@ -4,22 +4,22 @@ import type { Chunk, SearchResultsResearchBlock } from '../types.js';
 import { searchSearxng } from '../searxng.js';
 
 const schema = z.object({
-  queries: z.array(z.string()).describe('List of social search queries'),
+  queries: z.array(z.string()).max(6).describe('List of social search queries'),
 });
 
 const socialSearchAction: ResearchAction<typeof schema> = {
   name: 'social_search',
   schema,
   getToolDescription: () =>
-    'Use this tool to perform social media searches for relevant posts, discussions, and trends. Provide up to 3 queries at a time.',
+    'Use this tool to perform social media searches for posts, discussions, and trends. Provide up to 6 queries in the user\'s language.',
   getDescription: () =>
-    'Use this tool to perform social media searches for posts, discussions, and trends. Provide concise search queries. You can provide up to 3 queries at a time.',
+    'Use this tool to perform social media searches for posts, discussions, and trends. Up to 6 queries in the user\'s language.',
   enabled: (config) =>
     config.sources.includes('discussions') &&
     config.classification.classification.skipSearch === false &&
     config.classification.classification.discussionSearch === true,
   execute: async (input, additionalConfig) => {
-    input.queries = input.queries.slice(0, 3);
+    input.queries = input.queries.slice(0, 6);
 
     const researchBlock = additionalConfig.session.getBlock(additionalConfig.researchBlockId);
 
@@ -39,7 +39,23 @@ const socialSearchAction: ResearchAction<typeof schema> = {
     const results: Chunk[] = [];
 
     const search = async (q: string) => {
-      const res = await searchSearxng(q, { engines: ['reddit'] });
+      const [page1, page2] = await Promise.all([
+        searchSearxng(q, {
+          categories: ['social_media'],
+          pageno: 1,
+        }),
+        searchSearxng(q, {
+          categories: ['social_media'],
+          pageno: 2,
+        }),
+      ]);
+      const seenUrls = new Set<string>();
+      const allResults = [...(page1.results ?? []), ...(page2.results ?? [])].filter((r) => {
+        if (!r.url || seenUrls.has(r.url)) return false;
+        seenUrls.add(r.url);
+        return true;
+      });
+      const res = { results: allResults };
       const resultChunks: Chunk[] = res.results.map((r) => ({
         content: r.content || r.title,
         metadata: { title: r.title, url: r.url },