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/deploy-standalone.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+if [ "$1" == "" ] ; then
+    printf "\nDocker image-a version param missing"
+    printf "\n\nSyntax:\n\n    deploy-standalone.sh 1.0.0\n\n"
+    exit 1
+fi
+
+printf "\nBUILD START ...\n\n"
+
+IMAGE_VERSION=$1
+COMPOSE_FILE="docker-compose-standalone.yaml"
+
+echo "Deploying with image version: $IMAGE_VERSION"
+
+# Pass IMAGE_VERSION env var for compose variable substitution
+IMAGE_VERSION="$IMAGE_VERSION" docker compose \
+    -f "$COMPOSE_FILE" \
+    up -d