fix: simplify fullscreen TUI - no scroll region, safe tput calls, no trap conflict

install.sh

@@ -270,6 +270,7 @@ main() {
     fi
 
     ((fs_active == 0)) && tui_fs_set_overall "$idx" "$total" "${description:-$(basename "$module_path" .sh)}"
+    printf '\n'
     log_step "$idx" "$total" "${description:-$(basename "$module_path" .sh)}"
 
     module_run "$module_path" || {
@@ -284,7 +285,6 @@ main() {
       fi
       tui_warn "Module completed with warnings"
     }
-    ((fs_active == 0)) && tui_fs_set_progress 100
     ((idx++))
   done