Initial: Claude config with agents, skills, commands, rules and scripts

skills/database.md

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+# Database & SQL Skill
+
+## Installed Tools
+- PostgreSQL (docker)
+- MongoDB (docker)
+
+## Docker Compose for Databases
+
+### PostgreSQL
+```yaml
+services:
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: user
+      POSTGRES_PASSWORD: password
+      POSTGRES_DB: mydb
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    ports:
+      - "5432:5432"
+```
+
+### MongoDB
+```yaml
+services:
+  mongodb:
+    image: mongo:7
+    environment:
+      MONGO_INITDB_ROOT_USERNAME: user
+      MONGO_INITDB_ROOT_PASSWORD: password
+    volumes:
+      - mongo_data:/data/db
+    ports:
+      - "27017:27017"
+```
+
+### PostgreSQL + pgAdmin
+```yaml
+services:
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: admin
+      POSTGRES_PASSWORD: secret
+      POSTGRES_DB: mydb
+    ports:
+      - "5432:5432"
+
+  pgadmin:
+    image: dpage/pgadmin4
+    environment:
+      PGADMIN_DEFAULT_EMAIL: admin@test.com
+      PGADMIN_DEFAULT_PASSWORD: admin
+    ports:
+      - "8080:80"
+```
+
+## Common Commands
+```bash
+# PostgreSQL
+docker exec -it container psql -U user -d mydb
+
+# MongoDB
+docker exec -it container mongosh -u user -p password
+```
+
+## GUI Tools
+- DBeaver (multi-database)
+- pgAdmin (PostgreSQL)
+- MongoDB Compass (MongoDB)