Update migrations

app/ui/sidebar.py

@@ -0,0 +1,54 @@
+import streamlit as st
+from auth import get_fullname_for_user, get_role_for_user
+
+def build_sidebar():
+
+    if st.session_state.get("authentication_status") != True:
+        return
+
+    authenticator = st.session_state.get("authenticator")
+    username = st.session_state.get("username")
+
+    if not authenticator or not username:
+        return
+
+    role = get_role_for_user(username)
+    fullname = get_fullname_for_user(username)
+
+    with st.sidebar:
+        st.logo("app/images/GMN_Logo_neu_rgb.png", size="small")
+        st.write(f"**{fullname}** ({role})")
+
+        col1, col2 = st.columns(2)
+        with col1:
+            if st.button("Logout", use_container_width=True):
+                authenticator.logout("Logout", "unrendered")
+                st.rerun()
+        with col2:
+            if st.button("Home", use_container_width=True):
+                st.switch_page("pages/home.py")
+        st.divider()
+        st.markdown("## Menü")
+
+        st.page_link("pages/Benutzer.py", label="Benutzer anlegen")
+
+
+
+
+
+# Damit die leere Sidebar komplett verschwindet nach dem Logout
+def hide_sidebar_if_logged_out():
+    if st.session_state.get("authentication_status") != True:
+        st.markdown("""
+            <style>
+                /* komplette Sidebar + Toggle ausblenden */
+                [data-testid="stSidebar"] {display: none;}
+                [data-testid="stSidebarNav"] {display: none;}
+                [data-testid="collapsedControl"] {display: none;}
+                
+                /* Content wieder ganz nach links */
+                [data-testid="stAppViewContainer"] {
+                    margin-left: 0;
+                }
+            </style>
+        """, unsafe_allow_html=True)