Remove local development README and enhance scripts for cross-platform compatibility

- Deleted `README.md` for local development setup as it was deemed unnecessary.
- Updated `setup-neon.sh`, `start-all.sh`, and `create-service.sh` scripts to source an OS helper for improved cross-platform command execution.
- Modified commands in `init-project.sh` to reflect the new script structure for starting services.

scripts/utils/create-service.sh

@@ -4,6 +4,9 @@ set -e
 
 SERVICE_NAME=$1
 
+# Source OS helper for cross-platform commands
+source "$(dirname "$0")/os-helper.sh"
+
 # EN: Validate arguments
 # VI: Xác thực tham số
 if [ -z "$SERVICE_NAME" ]; then
@@ -30,13 +33,11 @@ cp -r services/_template "$SERVICE_DIR"
 # EN: Update package.json
 # VI: Cập nhật package.json
 cd "$SERVICE_DIR"
-sed -i.bak "s/@goodgo\/service-template/@goodgo\/$SERVICE_NAME/g" package.json
-rm package.json.bak
+run_sed "s/@goodgo\/service-template/@goodgo\/$SERVICE_NAME/g" package.json
 
 # EN: Update .env.example
 # VI: Cập nhật .env.example
-sed -i.bak "s/SERVICE_NAME=service-name/SERVICE_NAME=$SERVICE_NAME/g" .env.example 2>/dev/null || true
-rm .env.example.bak 2>/dev/null || true
+run_sed "s/SERVICE_NAME=service-name/SERVICE_NAME=$SERVICE_NAME/g" .env.example
 
 # EN: Update Dockerfile port if needed
 # VI: Cập nhật port Dockerfile nếu cần