feat: add .gitignore - comprehensive ignore patterns for Node.js SaaS project

Comprehensive .gitignore covering:
- Node.js dependencies and runtime files
- Build outputs and distribution directories
- Environment variables and configuration secrets
- Application and system logs
- Database files and storage
- Cloud deployment and infrastructure files
- Development tools and OS-generated files
- Testing outputs and coverage reports
- Security certificates and private keys
- Application-specific uploads and cache
- Package manager artifacts
- CI/CD build artifacts and deployment secrets

🤖 Generated with [Claude Code](https://claude.ai/code)

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

.gitignore

@@ -0,0 +1,366 @@
+# =============================================================================
+# Node.js & JavaScript
+# =============================================================================
+
+# Dependencies
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage
+.grunt
+
+# Bower dependency directory
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons
+build/Release
+
+# Dependency directories
+jspm_packages/
+
+# Snowpack dependency directory
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# =============================================================================
+# Build Outputs
+# =============================================================================
+
+# Distribution directories
+dist/
+build/
+out/
+.output/
+.vercel/
+.netlify/
+
+# Vite build outputs
+.vite/
+
+# Next.js build output
+.next/
+
+# Nuxt.js build / generate output
+.nuxt/
+
+# Gatsby files
+.cache/
+public/
+
+# Webpack bundles
+*.bundle.js
+*.bundle.js.map
+
+# =============================================================================
+# Environment & Configuration
+# =============================================================================
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+.env.*.local
+
+# Docker environment files
+.env.docker
+docker-compose.override.yml
+
+# Configuration files with secrets
+config.json
+secrets.json
+credentials.json
+
+# =============================================================================
+# Logs
+# =============================================================================
+
+# Log files
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# Application logs
+app.log
+error.log
+access.log
+combined.log
+
+# PM2 logs
+.pm2/
+
+# =============================================================================
+# Database & Storage
+# =============================================================================
+
+# SQLite databases
+*.sqlite
+*.sqlite3
+*.db
+
+# Database dumps
+*.sql
+*.dump
+
+# Redis dumps
+dump.rdb
+
+# =============================================================================
+# Cloud & Deployment
+# =============================================================================
+
+# AWS
+.aws/
+aws-exports.js
+
+# Serverless directories
+.serverless/
+
+# Terraform
+*.tfstate
+*.tfstate.*
+.terraform/
+.terraform.lock.hcl
+
+# Pulumi
+Pulumi.*.yaml
+
+# =============================================================================
+# Development Tools
+# =============================================================================
+
+# IDE/Editor files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+Desktop.ini
+
+# Temporary files
+*.tmp
+*.temp
+temp/
+tmp/
+
+# =============================================================================
+# Testing
+# =============================================================================
+
+# Test outputs
+test-results/
+playwright-report/
+test-report/
+
+# Coverage reports
+coverage/
+.coverage
+htmlcov/
+
+# Jest
+jest-coverage/
+
+# =============================================================================
+# Security & Certificates
+# =============================================================================
+
+# SSL certificates
+*.pem
+*.key
+*.crt
+*.cert
+*.p12
+*.pfx
+
+# Private keys
+id_rsa
+id_ed25519
+*.priv
+
+# GPG keys
+*.gpg
+*.asc
+
+# =============================================================================
+# Application Specific
+# =============================================================================
+
+# Uploaded files
+uploads/
+user-uploads/
+temp-uploads/
+
+# Processed images
+processed/
+thumbnails/
+
+# Cache directories
+.cache/
+cache/
+.temp/
+
+# Session storage
+sessions/
+
+# MinIO/S3 local storage
+minio-data/
+s3-local/
+
+# ClamAV database
+clamav-db/
+
+# =============================================================================
+# Monitoring & Analytics
+# =============================================================================
+
+# Sentry
+.sentryclirc
+
+# New Relic
+newrelic_agent.log
+
+# Application monitoring
+apm-agent-nodejs.log
+
+# =============================================================================
+# Package Managers
+# =============================================================================
+
+# pnpm
+.pnpm-debug.log*
+.pnpm-store/
+
+# Yarn
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
+.pnp.*
+
+# =============================================================================
+# Miscellaneous
+# =============================================================================
+
+# Backup files
+*.bak
+*.backup
+*.old
+*.orig
+
+# Archive files
+*.zip
+*.tar.gz
+*.rar
+*.7z
+
+# Large media files (development)
+*.mov
+*.mp4
+*.avi
+*.mkv
+*.webm
+
+# Documentation builds
+docs/build/
+site/
+
+# Storybook build outputs
+storybook-static/
+
+# Chromatic
+build-storybook.log
+
+# =============================================================================
+# Local Development
+# =============================================================================
+
+# Local configuration
+.local
+.development
+dev.json
+
+# Database seeds (if containing sensitive data)
+seeds/local/
+
+# Local scripts
+scripts/local/
+
+# Development certificates
+dev-certs/
+
+# Hot reload
+.hot-reload
+
+# =============================================================================
+# CI/CD
+# =============================================================================
+
+# Build artifacts from CI
+artifacts/
+reports/
+
+# Deployment scripts with secrets
+deploy-secrets.sh
+deploy.env