fix: improve Makefile and duckdb.go for better environment handling

- Updated the Makefile to export the EDITION variable for the lite build process, ensuring proper environment setup.
- Added a defer statement in duckdb.go to ensure the SQL database connection is closed after use, improving resource management.

These changes enhance the build process and resource handling in the application.

Makefile

@@ -248,8 +248,9 @@ build-lite:
 	else \
 		echo ">> No frontend/package.json, skipping frontend"; \
 	fi
-	EDITION=lite eval "$$(./scripts/get_version.sh env)"; \
-	LDFLAGS="$$(EDITION=lite ./scripts/get_version.sh ldflags)"; \
+	export EDITION=lite; \
+	eval "$$(./scripts/get_version.sh env)"; \
+	LDFLAGS="$$(./scripts/get_version.sh ldflags)"; \
 	CGO_ENABLED=1 \
 	CGO_CFLAGS="-Wno-deprecated-declarations" \
 	CGO_LDFLAGS="-Wl,-no_warn_duplicate_libraries" \

cmd/download/duckdb/duckdb.go

@@ -14,6 +14,7 @@ func downloadSpatial() {
 	if err != nil {
 		panic(err)
 	}
+	defer sqlDB.Close()
 
 	// Try to install spatial extension (may already be installed or network unavailable)
 	installSQL := "INSTALL spatial;"