refactor(ci): Rename images to stack-* prefix for clarity

Renamed all Docker images from generic names to stack-* prefix:
- api → stack-api
- web → stack-web
- postgres → stack-postgres
- openbao → stack-openbao
- orchestrator → stack-orchestrator

This prevents confusion with other repositories in the mosaic/
organization on git.mosaicstack.dev.

Registry images:
  git.mosaicstack.dev/mosaic/stack-api
  git.mosaicstack.dev/mosaic/stack-web
  git.mosaicstack.dev/mosaic/stack-postgres
  git.mosaicstack.dev/mosaic/stack-openbao
  git.mosaicstack.dev/mosaic/stack-orchestrator

Local images:
  stack-api:latest
  stack-web:latest
  stack-postgres:latest
  stack-openbao:latest
  stack-orchestrator:latest

Updated files:
- .woodpecker.yml (all build steps + package linking)
- docker-compose.swarm.yml (all image references)
- build-images.sh (local image names)
- deploy-swarm.sh (image validation)

build-images.sh

@@ -9,19 +9,19 @@ echo ""
 
 # Build postgres with pgvector
 echo "📦 Building postgres..."
-docker build -t mosaic-stack-postgres:latest -f docker/postgres/Dockerfile docker/postgres/
+docker build -t stack-postgres:latest -f docker/postgres/Dockerfile docker/postgres/
 
 # Build openbao
 echo "📦 Building openbao..."
-docker build -t mosaic-stack-openbao:latest -f docker/openbao/Dockerfile docker/openbao/
+docker build -t stack-openbao:latest -f docker/openbao/Dockerfile docker/openbao/
 
 # Build API
 echo "📦 Building API..."
-docker build -t mosaic-stack-api:latest -f apps/api/Dockerfile . --build-arg NODE_ENV=production
+docker build -t stack-api:latest -f apps/api/Dockerfile . --build-arg NODE_ENV=production
 
 # Build orchestrator
 echo "📦 Building orchestrator..."
-docker build -t mosaic-stack-orchestrator:latest -f apps/orchestrator/Dockerfile .
+docker build -t stack-orchestrator:latest -f apps/orchestrator/Dockerfile .
 
 # Build web (using NEXT_PUBLIC_API_URL from .env if available)
 echo "📦 Building web..."
@@ -30,13 +30,13 @@ if [ -f .env ]; then
 else
     NEXT_PUBLIC_API_URL="https://api.mosaicstack.dev"
 fi
-docker build -t mosaic-stack-web:latest -f apps/web/Dockerfile . --build-arg NEXT_PUBLIC_API_URL="$NEXT_PUBLIC_API_URL"
+docker build -t stack-web:latest -f apps/web/Dockerfile . --build-arg NEXT_PUBLIC_API_URL="$NEXT_PUBLIC_API_URL"
 
 echo ""
 echo "✅ All images built successfully!"
 echo ""
 echo "Built images:"
-docker images | grep mosaic-stack
+docker images | grep "^stack-"
 
 echo ""
 echo "Next step:"