feat: implement comprehensive startup system and fix authentication

Major improvements:
- Created startup orchestration system with health monitoring and graceful shutdown
- Fixed user registration and login with simplified authentication flow
- Rebuilt authentication forms from scratch with direct API integration
- Implemented comprehensive debugging and error handling
- Added Redis fallback functionality for disabled environments
- Fixed CORS configuration for cross-origin frontend requests
- Simplified password validation to 6+ characters (removed complexity requirements)
- Added toast notifications at app level for better UX feedback
- Created comprehensive startup/shutdown scripts with OODA methodology
- Fixed database validation and connection issues
- Implemented TokenService memory fallback when Redis is disabled

Technical details:
- New SimpleLoginForm.tsx and SimpleRegisterForm.tsx components
- Enhanced CORS middleware with additional allowed origins
- Simplified auth validators and removed strict password requirements
- Added extensive logging and diagnostic capabilities
- Fixed authentication middleware token validation
- Implemented graceful Redis error handling throughout the stack
- Created modular startup system with configurable health checks

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

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

package.json

@@ -6,24 +6,37 @@
   "scripts": {
     "dev": "nodemon --inspect=0.0.0.0:9229 src/server.js",
     "start": "node src/server.js",
+    "start:game": "node start-game.js",
+    "start:dev": "NODE_ENV=development node start-game.js",
+    "start:prod": "NODE_ENV=production node start-game.js",
+    "start:staging": "NODE_ENV=staging node start-game.js",
+    "start:quick": "./start.sh",
+    "start:debug": "./start.sh --debug --verbose",
+    "start:no-frontend": "./start.sh --no-frontend",
+    "start:backend-only": "ENABLE_FRONTEND=false node start-game.js",
+    "game": "./start.sh",
     "test": "jest --verbose --coverage",
     "test:watch": "jest --watch --verbose",
     "test:integration": "jest --testPathPattern=integration --runInBand",
     "test:e2e": "jest --testPathPattern=e2e --runInBand",
     "lint": "eslint src/ --ext .js --fix",
     "lint:check": "eslint src/ --ext .js",
+    "health:check": "node -e \"require('./scripts/health-monitor'); console.log('Health monitoring available')\"",
+    "system:check": "node -e \"const checks = require('./scripts/startup-checks'); new checks().runAllChecks().then(r => console.log('System checks:', r.success ? 'PASSED' : 'FAILED'))\"",
     "db:migrate": "knex migrate:latest",
     "db:rollback": "knex migrate:rollback",
     "db:seed": "knex seed:run",
     "db:reset": "knex migrate:rollback:all && knex migrate:latest && knex seed:run",
     "db:setup": "createdb shattered_void_dev && npm run db:migrate && npm run db:seed",
+    "db:validate": "node -e \"const val = require('./scripts/database-validator'); new val().validateDatabase().then(r => console.log('DB validation:', r.success ? 'PASSED' : 'FAILED', r.error || ''))\"",
     "setup": "node scripts/setup.js",
     "docker:build": "docker build -t shattered-void .",
     "docker:run": "docker-compose up -d",
     "docker:dev": "docker-compose -f docker-compose.dev.yml up -d",
     "logs": "tail -f logs/combined.log",
     "logs:error": "tail -f logs/error.log",
-    "logs:audit": "tail -f logs/audit.log"
+    "logs:audit": "tail -f logs/audit.log",
+    "logs:startup": "tail -f logs/startup.log"
   },
   "dependencies": {
     "bcrypt": "^5.1.1",