fix: update backendBaseUrl in next.config.ts to prioritize NEXT_API_BASE_URL

Makefile

@@ -173,7 +173,7 @@ _web-build-spa:
 	@cd $(WEB_DIR) && $(PNPM) build:sdk && $(PNPM) build
 
 _web-dev:
-	@cd $(WEB_DIR) && NEXT_PUBLIC_API_BASE_URL="$(DEV_API_BASE_URL)" $(PNPM) dev
+	@cd $(WEB_DIR) && NEXT_PUBLIC_API_BASE_URL="" NEXT_API_BASE_URL="$(DEV_API_BASE_URL)" $(PNPM) dev
 
 _prepare-dist:
 	@mkdir -p $(DIST_DIR)

web/next.config.ts

@@ -2,7 +2,9 @@ import type { NextConfig } from "next"
 import { PHASE_DEVELOPMENT_SERVER } from "next/constants"
 
 const backendBaseUrl =
-  process.env.NEXT_PUBLIC_API_BASE_URL?.trim() || "http://127.0.0.1:8083"
+  process.env.NEXT_API_BASE_URL?.trim() ||
+  process.env.NEXT_PUBLIC_API_BASE_URL?.trim() ||
+  "http://127.0.0.1:8083"
 const productionBasePath = ""
 
 export default function nextConfig(phase: string): NextConfig {