diff --git a/src/lib/app_components/e_app_url_builder.svelte b/src/lib/app_components/e_app_url_builder.svelte
index 7a270bc2..84df4bcc 100644
--- a/src/lib/app_components/e_app_url_builder.svelte
+++ b/src/lib/app_components/e_app_url_builder.svelte
@@ -1,45 +1,62 @@
 <script lang="ts">
     /**
      * e_app_url_builder.svelte
-     * Core URL Param Builder — lets admins construct and copy shareable URLs
-     * with any combination of the core global URL params applied.
+     * URL Param Builder — lets admins construct and copy shareable URLs
+     * with any combination of the supported URL params applied.
      *
      * Core params:
-     *   ?iframe=true|false     — hide sys/debug menus (kiosk mode)
-     *   ?theme=<name>          — set theme name on load (stripped from URL after apply)
-     *   ?theme_mode=light|dark — set light/dark mode on load (stripped from URL after apply)
+     *   ?iframe=true|false     — persist kiosk mode (stays in URL)
+     *   ?theme=<name>          — set theme name on load (stripped after apply)
+     *   ?theme_mode=light|dark — set light/dark mode on load (stripped after apply)
      *   ?key=<access_key>      — site access key
+     *
+     * Launcher params (all stripped from URL after apply):
+     *   ?launcher_menu=hide|show
+     *   ?launcher_header=hide|show
+     *   ?launcher_footer=hide|show
      */
     import { page } from '$app/stores';
     import { Copy, Check, Link } from '@lucide/svelte';
 
     // --- Per-param: include this param in the output URL?
-    let use_iframe      = $state(false);
-    let use_theme       = $state(false);
-    let use_theme_mode  = $state(false);
-    let use_key         = $state(false);
+    let use_iframe          = $state(false);
+    let use_theme           = $state(false);
+    let use_theme_mode      = $state(false);
+    let use_key             = $state(false);
+    let use_launcher_menu   = $state(false);
+    let use_launcher_header = $state(false);
+    let use_launcher_footer = $state(false);
 
     // --- Param values
-    let val_iframe      = $state<'true' | 'false'>('true');
-    let val_theme       = $state('nouveau');
-    let val_theme_mode  = $state<'light' | 'dark'>('dark');
-    let val_key         = $state('');
+    let val_iframe          = $state<'true' | 'false'>('true');
+    let val_theme           = $state('nouveau');
+    let val_theme_mode      = $state<'light' | 'dark'>('dark');
+    let val_key             = $state('');
+    let val_launcher_menu   = $state<'hide' | 'show'>('hide');
+    let val_launcher_header = $state<'hide' | 'show'>('hide');
+    let val_launcher_footer = $state<'hide' | 'show'>('hide');
 
     // Build the output URL reactively
     let built_url = $derived.by(() => {
         const base = $page.url;
         const u = new URL(base.pathname + base.search + base.hash, base.origin);
 
-        // Remove all core params first so we start clean each time
+        // Remove all known params first so we start clean each time
         u.searchParams.delete('iframe');
         u.searchParams.delete('theme');
         u.searchParams.delete('theme_mode');
         u.searchParams.delete('key');
+        u.searchParams.delete('launcher_menu');
+        u.searchParams.delete('launcher_header');
+        u.searchParams.delete('launcher_footer');
 
-        if (use_iframe)     u.searchParams.set('iframe', val_iframe);
-        if (use_theme)      u.searchParams.set('theme', val_theme);
-        if (use_theme_mode) u.searchParams.set('theme_mode', val_theme_mode);
-        if (use_key && val_key.trim()) u.searchParams.set('key', val_key.trim());
+        if (use_iframe)          u.searchParams.set('iframe',           val_iframe);
+        if (use_theme)           u.searchParams.set('theme',            val_theme);
+        if (use_theme_mode)      u.searchParams.set('theme_mode',       val_theme_mode);
+        if (use_key && val_key.trim()) u.searchParams.set('key',        val_key.trim());
+        if (use_launcher_menu)   u.searchParams.set('launcher_menu',    val_launcher_menu);
+        if (use_launcher_header) u.searchParams.set('launcher_header',  val_launcher_header);
+        if (use_launcher_footer) u.searchParams.set('launcher_footer',  val_launcher_footer);
 
         return u.toString();
     });
@@ -83,19 +100,21 @@
     ];
 </script>
 
-<section class="space-y-3">
-    <h2 class="text-xs font-semibold uppercase tracking-widest text-surface-500 flex items-center gap-1">
+<section class="space-y-3 text-sm">
+
+    <h2 class="text-xs font-semibold uppercase tracking-widest text-surface-500 dark:text-surface-400 flex items-center gap-1">
         <Link size="0.9em" /> URL Param Builder
     </h2>
 
-    <!-- Param toggles -->
-    <div class="space-y-2">
+    <!-- ── Core params ─────────────────────────────────────────────────── -->
+    <div class="space-y-1.5">
+        <p class="text-[9px] font-bold uppercase tracking-widest opacity-40 ml-0.5">Core</p>
 
         <!-- iframe -->
         <div class="flex items-center gap-2">
-            <input id="ubld_iframe" type="checkbox" class="checkbox checkbox-sm" bind:checked={use_iframe} />
-            <label for="ubld_iframe" class="w-20 text-xs font-mono">iframe</label>
-            <select bind:value={val_iframe} disabled={!use_iframe} class="select select-sm text-xs flex-1">
+            <input id="ubld_iframe" type="checkbox" class="checkbox checkbox-sm shrink-0" bind:checked={use_iframe} />
+            <label for="ubld_iframe" class="w-24 text-xs font-mono cursor-pointer select-none" class:opacity-35={!use_iframe}>iframe</label>
+            <select bind:value={val_iframe} disabled={!use_iframe} class="select select-sm text-xs flex-1 disabled:opacity-40">
                 <option value="true">true</option>
                 <option value="false">false</option>
             </select>
@@ -103,9 +122,9 @@
 
         <!-- theme -->
         <div class="flex items-center gap-2">
-            <input id="ubld_theme" type="checkbox" class="checkbox checkbox-sm" bind:checked={use_theme} />
-            <label for="ubld_theme" class="w-20 text-xs font-mono">theme</label>
-            <select bind:value={val_theme} disabled={!use_theme} class="select select-sm text-xs flex-1">
+            <input id="ubld_theme" type="checkbox" class="checkbox checkbox-sm shrink-0" bind:checked={use_theme} />
+            <label for="ubld_theme" class="w-24 text-xs font-mono cursor-pointer select-none" class:opacity-35={!use_theme}>theme</label>
+            <select bind:value={val_theme} disabled={!use_theme} class="select select-sm text-xs flex-1 disabled:opacity-40">
                 {#each theme_options as opt}
                     <option value={opt.value}>{opt.label}</option>
                 {/each}
@@ -114,9 +133,9 @@
 
         <!-- theme_mode -->
         <div class="flex items-center gap-2">
-            <input id="ubld_theme_mode" type="checkbox" class="checkbox checkbox-sm" bind:checked={use_theme_mode} />
-            <label for="ubld_theme_mode" class="w-20 text-xs font-mono">theme_mode</label>
-            <select bind:value={val_theme_mode} disabled={!use_theme_mode} class="select select-sm text-xs flex-1">
+            <input id="ubld_theme_mode" type="checkbox" class="checkbox checkbox-sm shrink-0" bind:checked={use_theme_mode} />
+            <label for="ubld_theme_mode" class="w-24 text-xs font-mono cursor-pointer select-none" class:opacity-35={!use_theme_mode}>theme_mode</label>
+            <select bind:value={val_theme_mode} disabled={!use_theme_mode} class="select select-sm text-xs flex-1 disabled:opacity-40">
                 <option value="light">light</option>
                 <option value="dark">dark</option>
             </select>
@@ -124,45 +143,81 @@
 
         <!-- key -->
         <div class="flex items-center gap-2">
-            <input id="ubld_key" type="checkbox" class="checkbox checkbox-sm" bind:checked={use_key} />
-            <label for="ubld_key" class="w-20 text-xs font-mono">key</label>
+            <input id="ubld_key" type="checkbox" class="checkbox checkbox-sm shrink-0" bind:checked={use_key} />
+            <label for="ubld_key" class="w-24 text-xs font-mono cursor-pointer select-none" class:opacity-35={!use_key}>key</label>
             <input
                 type="text"
                 bind:value={val_key}
                 disabled={!use_key}
                 placeholder="access key"
-                class="input input-sm text-xs font-mono flex-1"
+                class="input input-sm text-xs font-mono flex-1 disabled:opacity-40"
             />
         </div>
-
     </div>
 
-    <!-- params_only toggle + output -->
-    <div class="flex items-center gap-2">
-        <input id="ubld_params_only" type="checkbox" class="checkbox checkbox-sm" bind:checked={params_only} />
-        <label for="ubld_params_only" class="text-xs text-surface-500">Params only</label>
+    <!-- ── Launcher params ─────────────────────────────────────────────── -->
+    <div class="space-y-1.5 border-t border-surface-500/20 pt-2.5">
+        <p class="text-[9px] font-bold uppercase tracking-widest opacity-40 ml-0.5">Launcher</p>
+
+        <!-- launcher_menu -->
+        <div class="flex items-center gap-2">
+            <input id="ubld_launcher_menu" type="checkbox" class="checkbox checkbox-sm shrink-0" bind:checked={use_launcher_menu} />
+            <label for="ubld_launcher_menu" class="w-24 text-xs font-mono cursor-pointer select-none" class:opacity-35={!use_launcher_menu}>menu</label>
+            <select bind:value={val_launcher_menu} disabled={!use_launcher_menu} class="select select-sm text-xs flex-1 disabled:opacity-40">
+                <option value="hide">hide</option>
+                <option value="show">show</option>
+            </select>
+        </div>
+
+        <!-- launcher_header -->
+        <div class="flex items-center gap-2">
+            <input id="ubld_launcher_header" type="checkbox" class="checkbox checkbox-sm shrink-0" bind:checked={use_launcher_header} />
+            <label for="ubld_launcher_header" class="w-24 text-xs font-mono cursor-pointer select-none" class:opacity-35={!use_launcher_header}>header</label>
+            <select bind:value={val_launcher_header} disabled={!use_launcher_header} class="select select-sm text-xs flex-1 disabled:opacity-40">
+                <option value="hide">hide</option>
+                <option value="show">show</option>
+            </select>
+        </div>
+
+        <!-- launcher_footer -->
+        <div class="flex items-center gap-2">
+            <input id="ubld_launcher_footer" type="checkbox" class="checkbox checkbox-sm shrink-0" bind:checked={use_launcher_footer} />
+            <label for="ubld_launcher_footer" class="w-24 text-xs font-mono cursor-pointer select-none" class:opacity-35={!use_launcher_footer}>footer</label>
+            <select bind:value={val_launcher_footer} disabled={!use_launcher_footer} class="select select-sm text-xs flex-1 disabled:opacity-40">
+                <option value="hide">hide</option>
+                <option value="show">show</option>
+            </select>
+        </div>
     </div>
 
-    <!-- Output URL -->
-    <div class="flex gap-1 items-stretch">
-        <input
-            type="text"
-            readonly
-            value={output}
-            class="input input-sm text-xs font-mono flex-1 bg-surface-50/50 dark:bg-surface-700/50 cursor-text"
-            onclick={(e) => (e.target as HTMLInputElement).select()}
-            title="Click to select all"
-        />
-        <button
-            class="btn btn-sm {copied ? 'preset-filled-success' : 'preset-tonal-primary'} shrink-0 transition-all"
-            onclick={copy_url}
-            title="Copy URL to clipboard"
-        >
-            {#if copied}
-                <Check size="1em" />
-            {:else}
-                <Copy size="1em" />
-            {/if}
-        </button>
+    <!-- ── Output ──────────────────────────────────────────────────────── -->
+    <div class="border-t border-surface-500/20 pt-2.5 space-y-1.5">
+        <div class="flex items-center gap-2">
+            <input id="ubld_params_only" type="checkbox" class="checkbox checkbox-sm shrink-0" bind:checked={params_only} />
+            <label for="ubld_params_only" class="text-xs cursor-pointer select-none" class:opacity-35={!params_only}>Params only</label>
+        </div>
+
+        <div class="flex gap-1 items-stretch">
+            <input
+                type="text"
+                readonly
+                value={output}
+                class="input input-sm text-xs font-mono flex-1 bg-surface-50/50 dark:bg-surface-700/50 cursor-text"
+                onclick={(e) => (e.target as HTMLInputElement).select()}
+                title="Click to select all"
+            />
+            <button
+                class="btn btn-sm {copied ? 'preset-filled-success' : 'preset-tonal-primary'} shrink-0 transition-all"
+                onclick={copy_url}
+                title="Copy URL to clipboard"
+            >
+                {#if copied}
+                    <Check size="1em" />
+                {:else}
+                    <Copy size="1em" />
+                {/if}
+            </button>
+        </div>
     </div>
+
 </section>
diff --git a/src/routes/events/[event_id]/(launcher)/launcher/+layout.svelte b/src/routes/events/[event_id]/(launcher)/launcher/+layout.svelte
index 33a126da..48ad8a2e 100644
--- a/src/routes/events/[event_id]/(launcher)/launcher/+layout.svelte
+++ b/src/routes/events/[event_id]/(launcher)/launcher/+layout.svelte
@@ -147,6 +147,22 @@
             if (param_launcher_footer === 'hide')  $events_loc.launcher.hide__launcher_footer = true;
             else if (param_launcher_footer === 'show') $events_loc.launcher.hide__launcher_footer = false;
         });
+
+        // Strip launcher display params from the URL after applying them — same pattern
+        // as root layout does for ?theme / ?theme_mode.  These are "one-shot" apply params;
+        // keeping them in the URL is misleading because toggling the CFG panel would desync.
+        // ?iframe is intentionally left in the URL because it is a persistent mode flag.
+        if (param_launcher_menu || param_launcher_header || param_launcher_footer) {
+            const clean_url = new URL(data.url.href);
+            clean_url.searchParams.delete('launcher_menu');
+            clean_url.searchParams.delete('launcher_header');
+            clean_url.searchParams.delete('launcher_footer');
+            goto(clean_url.pathname + clean_url.search + clean_url.hash, {
+                replaceState: true,
+                noScroll: true,
+                keepFocus: true
+            });
+        }
     });
 
     // String-Only ID Vision: Sync the device ID from the native environment