feat: add embedded svelte frontend

scripts/run-local.sh

@@ -2,4 +2,11 @@
 
 set -euo pipefail
 
-go run ./cmd/amcs-server --config "${1:-configs/dev.yaml}"
+CONFIG_PATH="${1:-configs/dev.yaml}"
+
+if [[ ! -f internal/app/ui/dist/index.html ]]; then
+  echo "UI build not found; building frontend first..."
+  make ui-build
+fi
+
+go run ./cmd/amcs-server --config "$CONFIG_PATH"