Initial commit: Backend API Phase 1a complete

- FastAPI backend with JWT auth
- PostgreSQL database schema
- Trees and Sessions CRUD APIs
- Export functionality (Markdown, Text, HTML)
- Docker setup for local development
- Alembic migrations

.clauignore

@@ -0,0 +1,185 @@
+# .clauignore
+# Files and folders that Claude Code should ignore
+# Syntax is the same as .gitignore
+
+# ============================================
+# PERSONAL NOTES & SCRATCH FILES
+# ============================================
+# Your personal notes that Claude doesn't need to see
+MICHAEL-NOTES.md
+MICHAEL-TODO.md
+notes.md
+scratch.md
+TODO-personal.md
+
+# Personal folders
+notes/
+scratch/
+personal/
+.notes/
+
+# Any file with these prefixes
+IGNORE-*
+PERSONAL-*
+SCRATCH-*
+TEMP-*
+
+# ============================================
+# ENVIRONMENT & SECRETS
+# ============================================
+# Never let Claude see secrets or local config
+.env
+.env.local
+.env.*.local
+secrets.json
+credentials.json
+*.pem
+*.key
+*.crt
+id_rsa*
+
+# ============================================
+# DEPENDENCIES & BUILD ARTIFACTS
+# ============================================
+# No need for Claude to read dependency folders
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+env/
+venv/
+ENV/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+.pytest_cache/
+.coverage
+htmlcov/
+
+# Node/JavaScript
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.npm
+.yarn/
+package-lock.json
+yarn.lock
+
+# ============================================
+# IDE & EDITOR FILES
+# ============================================
+# IDE-specific files that clutter Claude's context
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+Thumbs.db
+
+# ============================================
+# DATABASE & LOGS
+# ============================================
+# Local database files and logs
+*.sqlite
+*.sqlite3
+*.db
+*.log
+logs/
+*.log.*
+
+# ============================================
+# TEMPORARY & GENERATED FILES
+# ============================================
+# Files that are generated and don't need review
+*.tmp
+*.temp
+.cache/
+.pytest_cache/
+.mypy_cache/
+.tox/
+coverage/
+
+# Excel temporary files
+~$*.xlsx
+~$*.xls
+
+# ============================================
+# VERSION CONTROL
+# ============================================
+# Let Claude ignore git metadata
+.git/
+.gitignore
+.gitattributes
+
+# ============================================
+# DOCUMENTATION EXCLUSIONS (if needed)
+# ============================================
+# Uncomment these if you want Claude to skip certain docs
+# CHANGELOG.md
+# CONTRIBUTING.md
+# LICENSE
+
+# ============================================
+# TESTING & CI/CD
+# ============================================
+# Test coverage and CI files usually not needed
+.coverage
+.circleci/
+.github/
+.gitlab-ci.yml
+.travis.yml
+
+# ============================================
+# GENERATED DOCUMENTATION
+# ============================================
+# API docs that are auto-generated
+docs/api/generated/
+docs/_build/
+
+# ============================================
+# CUSTOM EXCLUSIONS FOR THIS PROJECT
+# ============================================
+
+# Old versions or backups
+*.backup
+*.bak
+*.old
+backup/
+old/
+
+# Screenshots and media (unless needed)
+# Uncomment if you have lots of images that clutter context
+# screenshots/
+# *.png
+# *.jpg
+# *.gif
+# *.mp4
+
+# Large data files
+# data/
+# *.csv
+# *.json (if you have large JSON files)
+
+# ============================================
+# NOTES FOR FUTURE
+# ============================================
+# Remember to add new personal note patterns here
+# Example: If you create BRAINSTORM-*.md files, add:
+# BRAINSTORM-*