release: v0.5.0 - Authentication, API Keys & Advanced Features

Complete v0.5.0 implementation:

Database (@db-engineer):
- 3 migrations: users, api_keys, report_schedules tables
- Foreign keys, indexes, constraints, enums

Backend (@backend-dev):
- JWT authentication service with bcrypt (cost=12)
- Auth endpoints: /register, /login, /refresh, /me
- API Keys service with hash storage and prefix validation
- API Keys endpoints: CRUD + rotate
- Security module with JWT HS256

Frontend (@frontend-dev):
- Login/Register pages with validation
- AuthContext with localStorage persistence
- Protected routes implementation
- API Keys management UI (create, revoke, rotate)
- Header with user dropdown

DevOps (@devops-engineer):
- .env.example and .env.production.example
- docker-compose.scheduler.yml
- scripts/setup-secrets.sh
- INFRASTRUCTURE_SETUP.md

QA (@qa-engineer):
- 85 E2E tests: auth.spec.ts, apikeys.spec.ts, scenarios.spec.ts, regression-v050.spec.ts
- auth-helpers.ts with 20+ utility functions
- Test plans and documentation

Architecture (@spec-architect):
- SECURITY.md with best practices
- SECURITY-CHECKLIST.md pre-deployment
- Updated architecture.md with auth flows
- Updated README.md with v0.5.0 features

Documentation:
- Updated todo.md with v0.5.0 status
- Added docs/README.md index
- Complete setup instructions

Dependencies added:
- bcrypt, python-jose, passlib, email-validator

Tested: JWT auth flow, API keys CRUD, protected routes, 85 E2E tests ready

Closes: v0.5.0 milestone

.env.example

@@ -0,0 +1,72 @@
+# MockupAWS Environment Configuration - Development
+# Copy this file to .env and fill in the values
+
+# =============================================================================
+# Database
+# =============================================================================
+DATABASE_URL=postgresql+asyncpg://postgres:postgres@localhost:5432/mockupaws
+
+# =============================================================================
+# Application
+# =============================================================================
+APP_NAME=mockupAWS
+DEBUG=true
+API_V1_STR=/api/v1
+
+# =============================================================================
+# JWT Authentication
+# =============================================================================
+# Generate with: openssl rand -hex 32
+JWT_SECRET_KEY=change-this-in-production-min-32-chars
+JWT_ALGORITHM=HS256
+ACCESS_TOKEN_EXPIRE_MINUTES=30
+REFRESH_TOKEN_EXPIRE_DAYS=7
+
+# =============================================================================
+# Security
+# =============================================================================
+BCRYPT_ROUNDS=12
+API_KEY_PREFIX=mk_
+
+# =============================================================================
+# Email Configuration
+# =============================================================================
+# Provider: sendgrid or ses
+EMAIL_PROVIDER=sendgrid
+EMAIL_FROM=noreply@mockupaws.com
+
+# SendGrid Configuration
+# Get your API key from: https://app.sendgrid.com/settings/api_keys
+SENDGRID_API_KEY=sg_your_sendgrid_api_key_here
+
+# AWS SES Configuration (alternative to SendGrid)
+# Configure in AWS Console: https://console.aws.amazon.com/ses/
+AWS_ACCESS_KEY_ID=AKIA...
+AWS_SECRET_ACCESS_KEY=your_aws_secret_key
+AWS_REGION=us-east-1
+
+# =============================================================================
+# Reports & Storage
+# =============================================================================
+REPORTS_STORAGE_PATH=./storage/reports
+REPORTS_MAX_FILE_SIZE_MB=50
+REPORTS_CLEANUP_DAYS=30
+REPORTS_RATE_LIMIT_PER_MINUTE=10
+
+# =============================================================================
+# Scheduler (Cron Jobs)
+# =============================================================================
+# Option 1: APScheduler (in-process)
+SCHEDULER_ENABLED=true
+SCHEDULER_INTERVAL_MINUTES=5
+
+# Option 2: Celery (requires Redis)
+# REDIS_URL=redis://localhost:6379/0
+# CELERY_BROKER_URL=redis://localhost:6379/0
+# CELERY_RESULT_BACKEND=redis://localhost:6379/0
+
+# =============================================================================
+# Frontend (for CORS)
+# =============================================================================
+FRONTEND_URL=http://localhost:5173
+ALLOWED_HOSTS=localhost,127.0.0.1