feat: Complete technical challenge solution

.biomeignore

@@ -0,0 +1,58 @@
+# Archivos y carpetas que Biome debe ignorar
+
+# (adicionales a los del .gitignore que ya respeta automáticamente)
+
+# Build outputs
+
+dist/
+build/
+.next/
+out/
+
+# Dependencies
+
+node_modules/
+.pnp/
+.pnp.js
+
+# Testing
+
+coverage/
+.nyc_output/
+
+# Database & migrations
+
+drizzle/
+migrations/
+
+# Logs
+
+\*.log
+logs/
+
+# Environment files
+
+.env
+.env.local
+.env.\*.local
+
+# Editor
+
+.vscode/
+.idea/
+_.swp
+_.swo
+
+# OS
+
+.DS_Store
+Thumbs.db
+
+# Observability configs
+
+observability/
+
+# Generated files
+
+**/\*.generated.ts
+**/\*.generated.js

.dockerignore

@@ -0,0 +1,9 @@
+node_modules
+npm-debug.log
+dist
+.git
+.gitignore
+.env
+.vscode
+.idea
+*.md

.env.example

@@ -0,0 +1,35 @@
+# Environment Variables
+# Copy this file to .env and update with your values
+
+# Database
+TRANSACTION_DB_URL=postgresql://postgres:postgres@localhost:5432/postgres
+ANTIFRAUD_DB_URL=postgresql://postgres:postgres@localhost:5432/postgres
+
+# Kafka
+KAFKA_BROKER=localhost:9092
+
+# Services
+PORT=3000
+ANTI_FRAUD_PORT=3001
+
+# Application
+SERVICE_NAME=transaction-service
+SERVICE_VERSION=1.0.0
+NODE_ENV=development
+
+# Redis (optional)
+REDIS_URL=redis://localhost:6379
+
+# OpenTelemetry
+# Para Docker usar: http://tempo:4318
+# Para ejecución local usar: http://localhost:4318
+OTEL_ENABLED=true
+OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:4318
+OTEL_SAMPLING_RATIO=1.0
+
+# Logging
+LOG_LEVEL=info
+
+# Sentry (optional)
+SENTRY_ENABLED=false
+SENTRY_DSN=

.gitignore

@@ -71,6 +71,7 @@ typings/
 # dotenv environment variables file
 .env
 .env.test
+docker/.env
 
 # parcel-bundler cache (https://parceljs.org/)
 .cache
@@ -102,3 +103,15 @@ dist
 
 # TernJS port file
 .tern-port
+
+# Drizzle
+drizzle/
+
+# IDE
+.vscode/
+.idea/
+
+# AI Tools
+.claude/
+.cursor/
+.ai/