Switch to Brian's registry at 192.168.86.11:30095, add CI build+push+deploy jobs

- All services pull from 192.168.86.11:30095 instead of localhost:5000
- Removed self-hosted registry container (Brian runs his own)
- CI workflows: test → build → push to registry → deploy
- build-push.sh and watch-loop.sh updated with new registry address

products/watch-loop.sh

@@ -9,7 +9,7 @@ set -euo pipefail
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 cd "$SCRIPT_DIR"
 
-REGISTRY="${REGISTRY:-localhost:5000}"
+REGISTRY="${REGISTRY:-192.168.86.11:30095}"
 LOCK="/tmp/dd0c-watch.lock"
 
 # Prevent concurrent runs