Initial commit: HR Performance System

- Database schema with 31 tables for 4-card system
- LLM API integration (Gemini, DeepSeek, OpenAI)
- Error handling system with modal component
- Connection test UI for LLM services
- Environment configuration files
- Complete database documentation

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

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

.gitignore

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+# Environment variables
+.env
+.env.local
+.env.development
+.env.production
+.env.test
+
+# Dependencies
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+package-lock.json
+yarn.lock
+pnpm-lock.yaml
+
+# Build outputs
+dist/
+build/
+out/
+.next/
+.nuxt/
+.cache/
+
+# IDE and Editor files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+*.sublime-project
+*.sublime-workspace
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Testing
+coverage/
+.nyc_output/
+*.lcov
+.jest/
+
+# Uploads and temporary files
+uploads/
+temp/
+tmp/
+*.tmp
+
+# Database
+*.sqlite
+*.sqlite3
+*.db
+
+# OS files
+Thumbs.db
+.DS_Store
+desktop.ini
+
+# Misc
+.env.backup
+*.bak
+*.swp
+.vscode-test/