🔒 SECURITY: Remove exposed Adzuna API keys from test files - Remove hardcoded API key 'a9669ddf981b03634f0ae4661e1b9cf7' and App ID 'd42ea4e5' - Add proper environment variable validation - Exit gracefully if credentials are not set - Fixes critical security vulnerability

Fix Gradio launch parameters and function signature

Fix requirements.txt - remove YAML header

Add HuggingFace configuration header to README.md

🚀 Initial deployment of Multi-Agent Job Application Assistant