Add initial project configuration and setup for Reference Board Viewer application. Include EditorConfig for consistent coding styles, pre-commit hooks for linting and formatting, Docker Compose for local development with PostgreSQL and MinIO, and a Nix flake for development environment management. Establish CI/CD pipeline for automated testing and deployment.

.gitignore

@@ -44,6 +44,42 @@ env/
 result
 result-*
 
+# Node.js / JavaScript
+node_modules/
+package-lock.json
+pnpm-lock.yaml
+yarn.lock
+.npm
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+dist/
+.svelte-kit/
+
+# Environment files
+.env
+.env.local
+.env.*.local
+*.log
+
+# Database
+pgdata/
+*.sql
+*.db
+*.sqlite
+
+# MinIO / Storage
+minio-data/
+
+# Backend specific
+backend/.uv/
+backend/alembic/versions/__pycache__/
+
+# Frontend specific
+frontend/build/
+frontend/.svelte-kit/
+frontend/dist/
+
 # Project specific
 .specify/plans/*
 .specify/specs/*