Tiago Yamamoto 12e2503244 feat: implement invisible 12% buyer fee ... Business model: - Seller registers R$10,00 → Seller sees R$10,00 → Seller receives R$10,00 - Buyer searches → sees R$11,20 (+12%) → pays R$11,20 - Marketplace keeps R$1,20 (12%) Changes: - config.go: Add BuyerFeeRate (default 0.12) - handler.go: Add buyerFeeRate field to Handler struct - product_handler.go: SearchProducts inflates prices for buyers - server.go: Pass cfg.BuyerFeeRate to handler.New() - handler_test.go: Fix 3 New() calls with fee rate Env var: BUYER_FEE_RATE (default: 0.12)		2025-12-26 23:23:18 -03:00
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config.go	feat: implement invisible 12% buyer fee	2025-12-26 23:23:18 -03:00
config_test.go	fix(backend): fix build errors, update tests, and improve documentation	2025-12-21 23:11:33 -03:00