I have the source code for a marketplace-style eGrocer application and need it installed, configured, and running smoothly on the Android platform. The finished build must allow vendors to publish product listings, accept payments through an integrated gateway, and let shoppers leave ratings and written reviews. Please handle everything from environment setup and branding assets to store upload on Google Play (using my provided developer account). Once live, I’d like a short hand-off session or concise documentation so I can maintain products, manage payouts, and roll out future updates without headaches. If you have previous experience launching marketplace apps—especially grocery-focused solutions—let’s work together to get this in customers’ hands quickly.