Initial setup: docker-compose for Open Notebook (SurrealDB + open_notebook), Ollama + OpenRouter as AI providers

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.env.example

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+# SurrealDB & Open Notebook encryption key (generate with: openssl rand -base64 32)
+OPEN_NOTEBOOK_ENCRYPTION_KEY=
+
+# SurrealDB credentials
+SURREAL_USER=root
+SURREAL_PASSWORD=
+
+# OpenRouter (Cloud-KI, einziger Cloud-Provider)
+OPENROUTER_API_KEY=

.gitignore

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+.env
+surreal_data/
+notebook_data/

docker-compose.yml

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+services:
+  surrealdb:
+    image: surrealdb/surrealdb:v2
+    restart: always
+    pull_policy: always
+    command: start --log info --user ${SURREAL_USER:-root} --pass ${SURREAL_PASSWORD:-root} rocksdb:/mydata/mydatabase.db
+    user: root  # Required for bind mounts on Linux
+    environment:
+      - SURREAL_EXPERIMENTAL_GRAPHQL=true
+    ports:
+      - "127.0.0.1:8000:8000"
+    volumes:
+      - ./surreal_data:/mydata
+
+  open_notebook:
+    image: lfnovo/open_notebook:v1-latest
+    restart: always
+    pull_policy: always
+    depends_on:
+      - surrealdb
+    ports:
+      - "127.0.0.1:8502:8502"
+      - "127.0.0.1:5055:5055"
+    environment:
+      - OPEN_NOTEBOOK_ENCRYPTION_KEY=${OPEN_NOTEBOOK_ENCRYPTION_KEY}
+      - SURREAL_URL=ws://surrealdb:8000/rpc
+      - SURREAL_USER=${SURREAL_USER:-root}
+      - SURREAL_PASSWORD=${SURREAL_PASSWORD:-root}
+      - SURREAL_NAMESPACE=open_notebook
+      - SURREAL_DATABASE=open_notebook
+      - OLLAMA_BASE_URL=http://host.docker.internal:11434
+      - OPENROUTER_API_KEY=${OPENROUTER_API_KEY}
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    volumes:
+      - ./notebook_data:/app/data