initial feature/react-migration commit

dashboard-dash-backup/components/header.py

@@ -0,0 +1,13 @@
+# dashboard/components/header.py
+from dash import html
+
+def Header():
+    return html.Div(
+        className="app-header",
+        children=[
+            html.Img(src="/assets/logo.png", className="logo"),
+            html.Span("Infoscreen-Manager", className="app-title"),
+            html.Span(" – Organisationsname", className="org-name"),
+            html.Div(id="header-right", className="header-right")  # Platzhalter für Login/Profil‐Button
+        ]
+    )