Add deployment scaffolding (Dockerfile, docker-compose, nginx)

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

.dockerignore

@@ -0,0 +1,27 @@
+# Git
+.git
+.gitignore
+
+# Development
+node_modules
+.next
+.cache
+
+# Documentation
+README.md
+CLAUDE.md
+*.md
+
+# IDE
+.idea
+.vscode
+*.swp
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Environment (keep .env.example)
+.env
+.env.local
+.env*.local

.gitignore

@@ -11,3 +11,6 @@ docker.env
 # OS files
 .DS_Store
 Thumbs.db
+
+# Claude Code local instructions (symlink)
+CLAUDE.md

backlog/config.yml

@@ -0,0 +1,15 @@
+project_name: "open-notebook"
+default_status: "To Do"
+statuses: ["To Do", "In Progress", "Done"]
+labels: []
+milestones: []
+date_format: yyyy-mm-dd
+max_column_width: 20
+auto_open_browser: true
+default_port: 6420
+remote_operations: true
+auto_commit: false
+zero_padded_ids: 3
+bypass_git_hooks: false
+check_active_branches: true
+active_branch_days: 60