Google AI Studio app lacked configuration documentation and robust error handling for the Gemini API integration.

Changes

Environment Setup

• .env.local.template: Template file for GEMINI_API_KEY configuration
• vite.config.ts: Already defines both process.env.API_KEY and process.env.GEMINI_API_KEY from same source

Error Handling (services/geminiService.ts)

• Added API key validation with whitespace trimming
• Implemented error differentiation: API key errors show configuration help, other errors (network, rate limits) show generic message
• Wrapped streaming and non-streaming methods in try-catch blocks

private getAI() {
 const apiKey = process.env.GEMINI_API_KEY?.trim();
 if (!apiKey) {
 throw new Error('Gemini API key is not configured. Please set GEMINI_API_KEY in your .env.local file.');
 }
 return new GoogleGenAI({ apiKey });
}
async *streamTech(prompt: string) {
 try {
 // ... API call
 } catch (error) {
 const errorMessage = error instanceof Error && error.message.includes('API key') 
 ? error.message
 : 'I apologize, but I encountered an error processing your request. This could be due to network issues, rate limiting, or configuration problems.';
 yield { text: errorMessage, sources: [] };
 }
}

Documentation (README.md)

• Installation steps with API key setup
• Feature list (AI support, inventory, dark mode, search, WhatsApp)
• Technology stack (React 19, Vite, Gemini API, Tailwind, Recharts)
• Build commands

Notes

• .gitignore already excludes *.local files
• Zero security vulnerabilities (CodeQL scan)
• No breaking changes to existing functionality

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