refactor: create docker-stack workspace for deployment configs

Created dedicated workspace for Docker deployment configurations and scripts.
Improves organization by grouping all deployment-related files together.

## New Structure
- docker-stack/: Docker Compose files and deployment scripts
  - docker-compose-standalone.yaml
  - docker-compose-swarm.yml
  - docker-compose-debug.yml
  - deploy-standalone.sh
  - deploy-swarm.sh
  - README.md (deployment documentation)
  - package.json

## Changes
- Moved all docker-compose YAML files to docker-stack/
- Moved deploy scripts to docker-stack/
- Updated VS Code workspace to include docker-stack
- Updated documentation (README, CLAUDE.md)

## Deployment Workflow
1. Build: `cd web-app && ./build.sh 2.20.0`
2. Deploy: `cd docker-stack && ./deploy-standalone.sh 2.20.0`

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

docker-stack/README.md

@@ -0,0 +1,46 @@
+# Docker Stack
+
+Docker Compose configurations and deployment scripts for the Evidencija Režija application.
+
+## Files
+
+### Docker Compose Configurations
+
+- `docker-compose-standalone.yaml` - Standalone deployment with docker-compose
+- `docker-compose-swarm.yml` - Docker Swarm deployment
+- `docker-compose-debug.yml` - Debug/development deployment
+
+### Deployment Scripts
+
+- `deploy-standalone.sh` - Deploy standalone configuration
+- `deploy-swarm.sh` - Deploy swarm configuration
+
+## Usage
+
+### Deploying Standalone
+
+```bash
+cd docker-stack
+./deploy-standalone.sh 2.20.0
+```
+
+### Deploying to Swarm
+
+```bash
+cd docker-stack
+./deploy-swarm.sh 2.20.0
+```
+
+## Prerequisites
+
+- Docker image must be built first: `cd ../web-app && ./build.sh 2.20.0`
+- MongoDB data directory: `../mongo-volume/`
+- MongoDB backup directory: `../mongo-backup/`
+
+## Configuration
+
+All compose files reference:
+- Web app image: `utility-bills-tracker:${IMAGE_VERSION}`
+- Volume mounts: `../web-app/etc/hosts/`
+- MongoDB data: `../mongo-volume/`
+- MongoDB backups: `../mongo-backup/`