Initial commit: Polymarket copy trading bot

- Backend: Spring Boot + Kotlin implementation
  - Account management with private key import
  - Leader management
  - Copy trading configuration
  - Order synchronization
  - Balance and position queries via Polymarket API
  - Ethereum RPC integration for USDC balance
  - Proxy address calculation

- Frontend: React + TypeScript
  - Account management UI
  - Mobile responsive design
  - Account import with private key/mnemonic support
  - Balance display and account details modal

- Database: MySQL with Flyway migrations
- API Integration: Polymarket CLOB API, Data API, Ethereum RPC

.gitignore

@@ -0,0 +1,101 @@
+# IDE
+.idea/
+*.iml
+*.iws
+*.ipr
+.vscode/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Gradle
+backend/.gradle/
+backend/build/
+backend/bin/
+backend/out/
+backend/*.log
+backend/gradle-app.setting
+backend/.gradle
+backend/gradle-wrapper.jar
+
+# Kotlin
+*.kt.bak
+*.class
+
+# Java
+*.jar
+*.war
+*.ear
+*.class
+hs_err_pid*
+
+# Node.js
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+.pnpm-store/
+
+# Frontend build
+frontend/dist/
+frontend/.vite/
+frontend/.cache/
+frontend/.temp/
+frontend/.tmp/
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+*.env
+
+# Application properties (may contain sensitive data)
+backend/src/main/resources/application-local.properties
+backend/src/main/resources/application-dev.properties
+backend/src/main/resources/application-prod.properties
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# OS
+.DS_Store
+Thumbs.db
+*.swp
+*.swo
+*~
+
+# Database
+*.db
+*.sqlite
+*.sqlite3
+
+# Temporary files
+*.tmp
+*.temp
+.cache/
+
+# Coverage
+coverage/
+*.lcov
+.nyc_output/
+
+# Test
+test-results/
+*.test.log
+
+# Misc
+*.bak
+*.backup
+*.old
+