Monorepo skeleton, Prisma schema, core domain and services with tests

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

infra/docker-compose.dev.yml

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+name: barev-dev
+services:
+  postgres:
+    image: postgres:17-alpine
+    environment:
+      POSTGRES_USER: barev
+      POSTGRES_PASSWORD: barev
+      POSTGRES_DB: barev
+      TZ: Asia/Yerevan
+    ports: ["5434:5432"]
+    volumes: [pgdata:/var/lib/postgresql/data]
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U barev"]
+      interval: 5s
+      retries: 10
+  redis:
+    image: redis:7-alpine
+    ports: ["6380:6379"]
+  # S3-совместимое хранилище. Бакет создаёт API при старте.
+  s3:
+    image: chrislusf/seaweedfs:latest
+    command: server -dir=/data -s3 -s3.port=9000 -s3.config=/etc/seaweed/s3.json -master.volumeSizeLimitMB=256
+    ports: ["9000:9000"]
+    volumes:
+      - s3data:/data
+      - ./seaweed-s3.json:/etc/seaweed/s3.json:ro
+volumes:
+  pgdata:
+  s3data:

infra/seaweed-s3.json

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+{
+  "identities": [
+    {
+      "name": "barev",
+      "credentials": [{ "accessKey": "barev", "secretKey": "barev-secret" }],
+      "actions": ["Admin", "Read", "Write", "List", "Tagging"]
+    }
+  ]
+}