# Task ID: 8
# Title: Develop Configuration System
# Status: pending
# Dependencies: 1
# Priority: medium
# Description: Create a configuration system to manage server settings, API keys, and review templates.
# Details:
1. Implement ConfigManager class:
   ```typescript
   class ConfigManager {
     private config: ServerConfig;
     
     constructor(configPath?: string) {
       // Load configuration from file or environment variables
     }
     
     getGeminiConfig(): GeminiConfig {
       return this.config.gemini;
     }
     
     getStorageConfig(): StorageConfig {
       return this.config.storage;
     }
     
     getRepomixConfig(): RepomixConfig {
       return this.config.repomix;
     }
     
     getReviewTemplates(): ReviewTemplates {
       return this.config.reviewTemplates;
     }
   }
   ```
2. Define configuration interfaces:
   ```typescript
   interface ServerConfig {
     gemini: GeminiConfig;
     storage: StorageConfig;
     repomix: RepomixConfig;
     reviewTemplates: ReviewTemplates;
   }
   ```
3. Implement secure storage for API keys
4. Add configuration validation
5. Support for environment-specific configurations

# Test Strategy:
Test configuration loading from files and environment variables. Verify secure handling of API keys. Test configuration validation with valid and invalid configurations. Test environment-specific configuration loading.