Fix: system bar hide logic for iframe and menu param overrides (IDAA embed reliability)

src/lib/app_components/e_app_sys_bar.svelte

@@ -229,6 +229,9 @@ const theme_options = [
      OUTER WRAPPER — fixed bottom-right, hidden on print
      Visibility when in iframe is controlled by +layout.svelte (trusted_access gate)
 ══════════════════════════════════════════════════════════════════════════ -->
+<!-- {#if disable} -->
+    <!-- Hidden state: render nothing (not even the bar) -->
+<!-- {:else} -->
 <div
     class="
         ae_sys_bar
@@ -237,6 +240,7 @@ const theme_options = [
         flex
         flex-col items-end gap-1 print:hidden
     "
+    class:d-none={hide}
     class:hidden={hide}>
     <!-- ── EXPANDED PANEL ──────────────────────────────────────────────────── -->
     {#if expand}
@@ -723,6 +727,10 @@ const theme_options = [
     <!-- END: Compact bar -->
 </div>
 
+
+<!-- {/if} -->
+
+
 <style>
 /*
      * Strip blue backgrounds and fixed widths from sub-components when