Added API Endpoint and Admin Dashboard Endpoint

internal/server/api/api.go

@@ -0,0 +1,27 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+// NewHandler returns the API HTTP handler (routes under /).
+func NewHandler() http.Handler {
+	mux := http.NewServeMux()
+	mux.HandleFunc("GET /health", health)
+	mux.HandleFunc("GET /", root)
+	return mux
+}
+
+func health(w http.ResponseWriter, _ *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
+}
+
+func root(w http.ResponseWriter, _ *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(map[string]string{
+		"service": "printer-backend-api",
+		"message": "API placeholder — endpoints folgen",
+	})
+}