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/worker-gpu/app/config.py

@@ -0,0 +1,64 @@
+"""Конфигурация GPU воркера."""
+
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    """Настройки GPU воркера."""
+
+    model_config = SettingsConfigDict(
+        env_file=".env",
+        env_file_encoding="utf-8",
+        case_sensitive=False,
+    )
+
+    # PostgreSQL
+    POSTGRES_HOST: str = "postgres"
+    POSTGRES_PORT: int = 5432
+    POSTGRES_DB: str = "antiplagiator"
+    POSTGRES_USER: str = "antiplagiator"
+    POSTGRES_PASSWORD: str = "changeme"
+
+    # Redis
+    REDIS_URL: str = "redis://redis:6379/0"
+
+    # RabbitMQ
+    RABBITMQ_URL: str = "amqp://guest:guest@rabbitmq:5672/"
+
+    # MinIO
+    MINIO_ENDPOINT: str = "minio:9000"
+    MINIO_ACCESS_KEY: str = "minioadmin"
+    MINIO_SECRET_KEY: str = "changeme"
+    MINIO_BUCKET_DOCS: str = "documents"
+
+    # Elasticsearch
+    ELASTICSEARCH_URL: str = "http://elasticsearch:9200"
+
+    # Ollama
+    OLLAMA_URL: str = "http://ollama:11434"
+
+    # FAISS / ML
+    FAISS_INDEX_PATH: str = "/data/index/faiss.index"
+    FAISS_ID_MAP_PATH: str = "/data/index/faiss_id_map.json"
+    EMBED_MODEL: str = "paraphrase-multilingual-mpnet-base-v2"
+    EMBED_DEVICE: str = "cuda"
+    EMBED_BATCH_SIZE: int = 64
+    EMBED_DIM: int = 768  # Размерность вектора paraphrase-multilingual-mpnet-base-v2
+    FAISS_NLIST: int = 1024  # Количество кластеров для IVFFlat
+    FAISS_NPROBE: int = 64  # Количество кластеров для поиска
+
+    # App
+    APP_URL: str = "https://academic.jze9.ru"
+    ENVIRONMENT: str = "development"
+    DEBUG: bool = False
+
+    @property
+    def database_url_sync(self) -> str:
+        """Синхронный URL для SQLAlchemy (psycopg2)."""
+        return (
+            f"postgresql+psycopg2://{self.POSTGRES_USER}:{self.POSTGRES_PASSWORD}"
+            f"@{self.POSTGRES_HOST}:{self.POSTGRES_PORT}/{self.POSTGRES_DB}"
+        )
+
+
+settings = Settings()