feat: initial microservices project structure

Services:
- api: FastAPI gateway with JWT auth, async endpoints, WebSocket
- worker-gpu: CUDA sentence-transformers, FAISS IVFFlat, Ollama LLM
- worker-indexer: Winnowing+MinHash plagiarism detection, PDF/DOCX extraction
- worker-notifier: SMTP email notifications
- worker-gost: GOST 7.1-2003 and GOST R 7.0.5-2008 formatting

Infrastructure:
- docker-compose.yml (production) + docker-compose.dev.yml (hot reload)
- Nginx reverse proxy + WebSocket support
- PostgreSQL 16 with Alembic migrations
- Elasticsearch 8 with Russian/English analyzers
- MinIO, RabbitMQ, Redis, Ollama

Frontend:
- React 18 + Vite + TypeScript + TailwindCSS + Zustand + React Query v5
- 9 pages: Home, Search, Cabinet, Task, Check, Bibliography, Pricing, Login, Register

Scripts:
- Parser stubs: OpenAlex, КиберЛенинка, arXiv (Phase 0 - to be filled)

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

services/frontend/src/components/SourceCard.tsx

@@ -0,0 +1,144 @@
+import React from 'react';
+import { ExternalLink, BookmarkPlus, BookmarkCheck, Copy } from 'lucide-react';
+import { clsx } from 'clsx';
+import toast from 'react-hot-toast';
+import { useBibliographyStore } from '../store/bibliography';
+import type { SearchSource } from '../types';
+
+interface SourceCardProps {
+  source: SearchSource;
+}
+
+const SOURCE_DB_LABELS: Record<string, string> = {
+  openalex: 'OpenAlex',
+  cyberleninka: 'КиберЛенинка',
+  arxiv: 'arXiv',
+  wikipedia_ru: 'Wikipedia RU',
+  wikipedia_en: 'Wikipedia EN',
+};
+
+function getRelevanceColor(score: number): string {
+  if (score >= 0.7) return 'text-green-700 bg-green-50 border-green-200';
+  if (score >= 0.4) return 'text-yellow-700 bg-yellow-50 border-yellow-200';
+  return 'text-gray-600 bg-gray-50 border-gray-200';
+}
+
+export function SourceCard({ source }: SourceCardProps) {
+  const { addSource, removeSource, hasSource } = useBibliographyStore();
+  const inBibliography = hasSource(source.id);
+
+  const handleToggleBibliography = () => {
+    if (inBibliography) {
+      removeSource(source.id);
+      toast.success('Удалено из библиографии');
+    } else {
+      addSource(source);
+      toast.success('Добавлено в библиографию');
+    }
+  };
+
+  const handleCopyCitation = () => {
+    navigator.clipboard.writeText(source.gost_citation).then(() => {
+      toast.success('ГОСТ-цитата скопирована');
+    });
+  };
+
+  const authorsStr = source.authors
+    .slice(0, 3)
+    .map((a) => `${a.last_name} ${a.initials || ''}`.trim())
+    .join(', ');
+
+  return (
+    <div className="bg-white rounded-xl border border-gray-100 p-5 hover:border-gray-200 hover:shadow-sm transition-all duration-200">
+      {/* Заголовок и значки */}
+      <div className="flex items-start justify-between gap-3 mb-3">
+        <div className="flex-1 min-w-0">
+          <h3 className="text-base font-semibold text-gray-900 leading-snug line-clamp-2 mb-1">
+            {source.title}
+          </h3>
+          <div className="flex items-center gap-2 flex-wrap">
+            {authorsStr && (
+              <span className="text-sm text-gray-500">{authorsStr}</span>
+            )}
+            {source.year && (
+              <span className="text-sm text-gray-400">{source.year}</span>
+            )}
+            {source.journal && (
+              <span className="text-sm text-gray-400 italic">{source.journal}</span>
+            )}
+          </div>
+        </div>
+
+        {/* Бейдж релевантности */}
+        <div className={clsx(
+          'flex-shrink-0 px-2 py-1 rounded-lg text-xs font-medium border',
+          getRelevanceColor(source.relevance_score)
+        )}>
+          {(source.relevance_score * 100).toFixed(0)}%
+        </div>
+      </div>
+
+      {/* Аннотация */}
+      {source.abstract && (
+        <p className="text-sm text-gray-600 line-clamp-3 mb-3">
+          {source.abstract}
+        </p>
+      )}
+
+      {/* ГОСТ-цитата */}
+      <div className="bg-gray-50 rounded-lg p-3 mb-3">
+        <p className="text-xs text-gray-500 mb-1 font-medium">ГОСТ-цитата:</p>
+        <p className="text-xs text-gray-700 leading-relaxed">{source.gost_citation}</p>
+      </div>
+
+      {/* Действия */}
+      <div className="flex items-center gap-2 flex-wrap">
+        {/* Источник */}
+        <span className="px-2 py-1 bg-gray-100 text-gray-500 text-xs rounded-md">
+          {SOURCE_DB_LABELS[source.source_db] || source.source_db}
+        </span>
+
+        <div className="ml-auto flex items-center gap-1.5">
+          {/* Открыть источник */}
+          {source.url && (
+            <a
+              href={source.url}
+              target="_blank"
+              rel="noopener noreferrer"
+              className="inline-flex items-center gap-1 px-3 py-1.5 text-xs font-medium text-gray-600 bg-white border border-gray-200 rounded-lg hover:bg-gray-50 transition-colors"
+            >
+              <ExternalLink className="w-3 h-3" />
+              Открыть
+            </a>
+          )}
+
+          {/* Копировать цитату */}
+          <button
+            onClick={handleCopyCitation}
+            className="inline-flex items-center gap-1 px-3 py-1.5 text-xs font-medium text-gray-600 bg-white border border-gray-200 rounded-lg hover:bg-gray-50 transition-colors"
+          >
+            <Copy className="w-3 h-3" />
+            Цитата
+          </button>
+
+          {/* В библиографию */}
+          <button
+            onClick={handleToggleBibliography}
+            className={clsx(
+              'inline-flex items-center gap-1 px-3 py-1.5 text-xs font-medium rounded-lg transition-colors',
+              inBibliography
+                ? 'bg-brand-600 text-white hover:bg-brand-700'
+                : 'bg-white text-brand-600 border border-brand-200 hover:bg-brand-50'
+            )}
+          >
+            {inBibliography ? (
+              <><BookmarkCheck className="w-3 h-3" />Добавлено</>
+            ) : (
+              <><BookmarkPlus className="w-3 h-3" />В библиографию</>
+            )}
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}