backend/config/default.json

{
  "server": {
    "port": 3000,
    "host": "localhost",
    "environment": "development",
    "maxRequestSize": "10mb",
    "corsEnabled": true,
    "rateLimitEnabled": false,
    "rateLimitWindowMs": 900000,
    "rateLimitMaxRequests": 100
  },
  "database": {
    "type": "sqlite",
    "path": "./data/analysis.db",
    "maxConnections": 10,
    "acquireTimeoutMs": 30000,
    "createTimeoutMs": 30000,
    "destroyTimeoutMs": 5000,
    "idleTimeoutMs": 30000,
    "reapIntervalMs": 1000
  },
  "ai": {
    "gemini": {
      "model": "gemini-2.0-flash",
      "maxRetries": 3,
      "baseDelay": 2000,
      "timeoutMs": 45000,
      "maxConcurrentRequests": 5
    }
  },
  "analysis": {
    "maxConcurrentAnalyses": 3,
    "timeoutMs": 300000,
    "maxStuckTimeMs": 600000,
    "cleanupIntervalMs": 120000,
    "defaultViewports": ["desktop", "tablet", "mobile"],
    "enableAccessibility": false,
    "enableVisualAnalysis": true,
    "enableAICritique": true
  },
  "screenshots": {
    "storagePath": "./data/screenshots",
    "maxFileSize": 10485760,
    "retentionDays": 30,
    "timeoutMs": 15000,
    "waitForMs": 1000,
    "viewports": {
      "desktop": {
        "width": 1920,
        "height": 1080
      },
      "tablet": {
        "width": 768,
        "height": 1024
      },
      "mobile": {
        "width": 375,
        "height": 667
      }
    }
  },
  "browser": {
    "poolSize": 3,
    "maxIdleTimeMs": 300000,
    "maxLifetimeMs": 1800000,
    "launchArgs": [
      "--no-sandbox",
      "--disable-setuid-sandbox",
      "--disable-dev-shm-usage",
      "--disable-gpu",
      "--disable-web-security",
      "--single-process"
    ],
    "headless": true,
    "enableLogging": false
  },
  "visualAnalysis": {
    "enableColorAnalysis": true,
    "enableLayoutAnalysis": true,
    "enableTypographyAnalysis": true,
    "enableSpacingAnalysis": true,
    "enableHierarchyAnalysis": true,
    "maxImageSize": 5242880,
    "processingTimeoutMs": 30000,
    "colorThresholds": {
      "lowContrast": 3.0,
      "normalContrast": 4.5,
      "highContrast": 7.0
    },
    "layoutThresholds": {
      "minWhitespace": 0.15,
      "maxContentDensity": 0.7,
      "minTouchTargetSize": 44
    }
  },
  "logging": {
    "level": "info",
    "enableConsole": true,
    "enableFile": false,
    "filePath": "./logs/app.log",
    "maxFileSize": "10MB",
    "maxFiles": 5,
    "enableStructured": true,
    "enableCorrelationId": true
  },
  "health": {
    "enabled": true,
    "endpoint": "/health",
    "intervalMs": 30000,
    "timeoutMs": 5000,
    "checks": {
      "database": true,
      "ai": true,
      "storage": true,
      "memory": true,
      "browser": true
    }
  },
  "security": {
    "helmet": {
      "enabled": true,
      "contentSecurityPolicy": false,
      "crossOriginEmbedderPolicy": false
    },
    "cors": {
      "enabled": true,
      "origin": true,
      "credentials": false
    },
    "rateLimit": {
      "enabled": false,
      "windowMs": 900000,
      "max": 100,
      "standardHeaders": true,
      "legacyHeaders": false
    }
  },
  "features": {
    "accessibilityAnalysis": false,
    "visualDesignAnalysis": true,
    "aiCritique": true,
    "advancedReporting": false,
    "queueSystem": false,
    "caching": false,
    "metrics": false,
    "websockets": false
  },
  "queue": {
    "enabled": false,
    "redis": {
      "host": "localhost",
      "port": 6379,
      "password": "",
      "db": 0,
      "keyPrefix": "ux-analyst:",
      "maxRetriesPerJob": 3
    },
    "jobs": {
      "analysis": {
        "priority": 0,
        "attempts": 3,
        "backoff": {
          "type": "exponential",
          "delay": 2000
        }
      }
    }
  }
}