Initial project scaffold: Open Brain self-hosted knowledge infrastructure

Node.js/TypeScript server with MCP endpoint for AI assistant integration,
Discord bot for thought capture and slash commands, PostgreSQL + pgvector
for semantic search, and OpenRouter for embeddings/metadata extraction.
Dockerized for deployment behind Caddy.

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

docker-compose.yml

@@ -0,0 +1,10 @@
+services:
+  open-brain:
+    build: .
+    container_name: open-brain
+    restart: unless-stopped
+    ports:
+      - "3100:3100"
+    env_file: .env
+    extra_hosts:
+      - "host.docker.internal:host-gateway"