v1.8.17: revert broken undo, keep only alias-edit feature

Fully reverted sidebar, files_tab, totp_tab, server_dialog to v1.8.10
base. Removed all entry_undo bindings that broke Ctrl+V paste globally.
Only alias editing feature preserved (editable alias + rename support).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

gui/app.py

@@ -129,12 +129,9 @@ class App(ctk.CTk):
         if server:
             dialog = ServerDialog(self, self.store, server=server)
             self.wait_window(dialog)
-            # If alias was changed, re-select the new alias
             if dialog.result and dialog.result.get("alias") != alias:
                 new_alias = dialog.result["alias"]
-                # Sidebar auto-refreshes via store subscription
                 self.sidebar._select(new_alias)
-                # Migrate session pool reference
                 self.session_pool.rename_server(alias, new_alias)
             else:
                 self.info_tab.refresh()