diff --git a/web/src/App.svelte b/web/src/App.svelte
index f28fdd2..4bd8ec8 100644
--- a/web/src/App.svelte
+++ b/web/src/App.svelte
@@ -27,6 +27,7 @@
     edgeSlotWriteTooltip as edgeOnboardSlotWriteTooltip,
     emptyEdgeOnboardProfileState,
     friendlyEdgeSlotsError,
+    isEdgeSlotsAgentRequiredMessage,
     isEdgeTargetController,
     shouldReadEdgeOnboardProfiles,
     shouldResetEdgeOnboardProfiles
@@ -787,7 +788,8 @@
   let requestedView: AppView | null = null;
   const guardBounceMessages: Partial<Record<AppView, string>> = {
     tuning: 'Tuning opens once a controller is connected.',
-    advancedButtonMapping: 'Button mapping needs a game selected in Tuning first.'
+    advancedButtonMapping: 'Button mapping needs a game selected in Tuning first.',
+    advancedEdgeSlots: 'Edge onboard slots need a DualSense Edge as the Target Controller.'
   };
 
   const syncViewFromHash = () => {
@@ -801,7 +803,12 @@
   };
 
   const navigateToView = (view: AppView) => {
-    view = guardView(view, { tuningReady, buttonMappingReady, edgeSlotsReady });
+    const requested = view;
+    view = guardView(requested, { tuningReady, buttonMappingReady, edgeSlotsReady });
+    if (view !== requested) {
+      const message = guardBounceMessages[requested];
+      if (message) showToast(message, 'info');
+    }
     activeView = view;
     // An explicit navigation always wins over a parked deep-link intent.
     requestedView = null;
@@ -1541,7 +1548,7 @@
       await loadEdgeProfiles(controller.id, true);
     } catch (caught) {
       edgeProfilesError = friendlyEdgeSlotsError(caught, 'Unable to write Edge onboard slot.');
-      showToast(edgeProfilesError, 'error');
+      showToast(edgeProfilesError, isEdgeSlotsAgentRequiredMessage(edgeProfilesError) ? 'info' : 'error');
     } finally {
       edgeProfilesBusySlot = '';
     }
@@ -2288,9 +2295,9 @@
       <button class="solid-action compact" type="button" onclick={refresh}>Retry</button>
     </section>
   {:else if snapshot}
-    <!-- Utility row: cross-view context that has no single page home — the
-         target controller for writes, the web UI bind address, the Forza glyph
-         override, and a compact system readout. -->
+    <!-- Utility row: cross-view context that has no single page home: the
+         target controller for writes, the web UI bind address, and a compact
+         system readout. -->
     <section class="app-toolbar" class:open={toolbarOpen} aria-label="Controller and display options">
       <button
         class="app-toolbar-disclosure"
@@ -2337,17 +2344,6 @@
             <option value="lan">LAN Access</option>
           </select>
         </label>
-        <button
-          class="app-toolbar-toggle"
-          class:active={glyphOverrideEnabled}
-          type="button"
-          disabled={appSettingsBusy}
-          aria-pressed={glyphOverrideEnabled}
-          title={forzaGlyphs?.lastStatus ?? glyphInstallPath}
-          onclick={() => void updateForzaGlyphOverride()}
-        >
-          Controller Glyphs: {glyphOverrideEnabled ? 'PlayStation Icons' : 'Game Default'}
-        </button>
         <div class="app-toolbar-spacer"></div>
         <div
           class="app-toolbar-readout"
@@ -2488,6 +2484,10 @@
           onSetStickDeadzone={setStickDeadzone}
           onStartInputBridge={startControllerInputBridge}
           onStopInputBridge={stopControllerInputBridge}
+          {glyphOverrideEnabled}
+          glyphOverrideBusy={appSettingsBusy}
+          glyphOverrideTitle={forzaGlyphs?.lastStatus ?? glyphInstallPath}
+          onToggleGlyphOverride={updateForzaGlyphOverride}
           {supportBundleBusy}
           onDownloadSupportBundle={exportSupportBundle}
         />
@@ -2501,6 +2501,7 @@
           {edgeProfilesLoading}
           {edgeProfilesBusySlot}
           {edgeProfilesError}
+          edgeProfilesAgentRequired={isEdgeSlotsAgentRequiredMessage(edgeProfilesError)}
           {edgeSlotsReadTooltip}
           edgeSlotWriteLabel={edgeSlotWriteLabel()}
           onRefreshEdgeProfiles={() => controller && void loadEdgeProfiles(controller.id, true)}
diff --git a/web/src/app/edgeOnboardProfiles.ts b/web/src/app/edgeOnboardProfiles.ts
index a931a51..f781981 100644
--- a/web/src/app/edgeOnboardProfiles.ts
+++ b/web/src/app/edgeOnboardProfiles.ts
@@ -97,10 +97,15 @@ export function edgeSlotWriteLabel(edgeProfiles: EdgeProfilesResponse | null): s
  * helper handles both the read and the write path, so the copy can't claim a
  * direction.
  */
+export const EDGE_SLOTS_AGENT_REQUIRED_MESSAGE = 'Onboard slots need DSCC running.';
+
+export const isEdgeSlotsAgentRequiredMessage = (message: string): boolean =>
+  message === EDGE_SLOTS_AGENT_REQUIRED_MESSAGE;
+
 export const friendlyEdgeSlotsError = (caught: unknown, fallback: string): string => {
   const message = caught instanceof Error ? caught.message : fallback;
   return message.includes('requires the real DSCC agent')
-    ? 'Onboard slots need DSCC running.'
+    ? EDGE_SLOTS_AGENT_REQUIRED_MESSAGE
     : message;
 };
 
diff --git a/web/src/components/AppSidebar.svelte b/web/src/components/AppSidebar.svelte
index e6c4284..9747af0 100644
--- a/web/src/components/AppSidebar.svelte
+++ b/web/src/components/AppSidebar.svelte
@@ -32,7 +32,7 @@
   const itemTooltip = (id: AppView): string => {
     if (id === 'tuning' && !readiness.tuningReady) return 'Select a controller before tuning haptics.';
     if (id === 'advancedButtonMapping' && !readiness.buttonMappingReady) {
-      return 'Select a game or local app scope before editing mappings.';
+      return 'Pick a supported game in Tuning to map its buttons.';
     }
     if (id === 'advancedEdgeSlots' && !readiness.edgeSlotsReady) {
       return 'Onboard slots are available when the Target Controller is a DualSense Edge.';
@@ -50,9 +50,10 @@
     <button
       class="sidebar-item"
       class:active={view === item.id}
+      class:disabled={itemDisabled(item.id)}
       type="button"
       title={itemTooltip(item.id)}
-      disabled={itemDisabled(item.id)}
+      aria-disabled={itemDisabled(item.id) ? 'true' : undefined}
       aria-current={view === item.id ? 'page' : undefined}
       onclick={() => onNavigate(item.id)}
     >{item.label}</button>
@@ -68,9 +69,10 @@
       <button
         class="sidebar-item sidebar-sub"
         class:active={view === item.id}
+        class:disabled={itemDisabled(item.id)}
         type="button"
         title={itemTooltip(item.id)}
-        disabled={itemDisabled(item.id)}
+        aria-disabled={itemDisabled(item.id) ? 'true' : undefined}
         aria-current={view === item.id ? 'page' : undefined}
         onclick={() => onNavigate(item.id)}
       >{item.label}</button>
diff --git a/web/src/lib/features/controllers/ControllersView.svelte b/web/src/lib/features/controllers/ControllersView.svelte
index a272a32..e6bbfc8 100644
--- a/web/src/lib/features/controllers/ControllersView.svelte
+++ b/web/src/lib/features/controllers/ControllersView.svelte
@@ -63,6 +63,10 @@
   export let onSetStickDeadzone: (side: 'left' | 'right', value: number) => void | Promise<void> = () => {};
   export let onStartInputBridge: () => void | Promise<void> = () => {};
   export let onStopInputBridge: () => void | Promise<void> = () => {};
+  export let glyphOverrideEnabled = false;
+  export let glyphOverrideBusy = false;
+  export let glyphOverrideTitle = '';
+  export let onToggleGlyphOverride: () => void | Promise<void> = () => {};
   export let supportBundleBusy: 'copy' | 'download' | '' = '';
   export let onDownloadSupportBundle: () => void | Promise<void> = () => {};
 
@@ -614,6 +618,25 @@
       </div>
     {/if}
 
+    <div class="ctl-group narrow">
+      <div class="lbl">Button icons</div>
+      <div class="ctl-setting-row">
+        <div>
+          <strong>Forza button icons</strong>
+          <span>Show PlayStation icons where DSCC manages the supported Forza icon files.</span>
+        </div>
+        <button
+          type="button"
+          class="ctl-button"
+          class:active={glyphOverrideEnabled}
+          disabled={glyphOverrideBusy}
+          aria-pressed={glyphOverrideEnabled}
+          title={glyphOverrideTitle}
+          onclick={() => void onToggleGlyphOverride()}
+        >{glyphOverrideEnabled ? 'PlayStation icons' : 'Game default'}</button>
+      </div>
+    </div>
+
     <div class="ctl-group narrow">
       <div class="lbl">Support</div>
       <div class="ctl-support">
diff --git a/web/src/lib/features/controllers/EdgeSlotsView.svelte b/web/src/lib/features/controllers/EdgeSlotsView.svelte
index 0026f82..e3aa2e4 100644
--- a/web/src/lib/features/controllers/EdgeSlotsView.svelte
+++ b/web/src/lib/features/controllers/EdgeSlotsView.svelte
@@ -13,6 +13,7 @@
   export let edgeProfilesLoading = false;
   export let edgeProfilesBusySlot = '';
   export let edgeProfilesError = '';
+  export let edgeProfilesAgentRequired = false;
   export let edgeSlotsReadTooltip = '';
   export let edgeSlotWriteLabel = 'Write';
   export let onRefreshEdgeProfiles: () => void | Promise<void> = () => {};
@@ -25,7 +26,7 @@
   $: alias = controller?.name || controller?.family || 'No controller';
 </script>
 
-<section class="ctl-view" aria-label="Edge onboard slots">
+<section class="ctl-view edge-slots-view" aria-label="Edge onboard slots">
   <div class="ctl-head">
     <h1 class="ctl-title">Edge onboard slots</h1>
     <span class="ctl-sub">{alias} &middot; profiles stored on the controller itself, for checking, not for everyday tuning</span>
@@ -49,7 +50,17 @@
       </div>
 
       {#if edgeProfilesError}
-        <p class="ctl-note error">{edgeProfilesError}</p>
+        {#if edgeProfilesAgentRequired}
+          <p class="ctl-note status info">
+            <span class="ctl-note-label">Info</span>
+            <span>{edgeProfilesError} Start DSCC to read onboard slots.</span>
+          </p>
+        {:else}
+          <p class="ctl-note status error" role="alert">
+            <span class="ctl-note-label">Error</span>
+            <span>{edgeProfilesError}</span>
+          </p>
+        {/if}
       {:else if edgeProfiles?.warning}
         <p class="ctl-note">{edgeProfiles.warning}</p>
       {/if}
diff --git a/web/src/lib/features/tuning/TuningHeader.svelte b/web/src/lib/features/tuning/TuningHeader.svelte
index 7b43f55..94ad6a2 100644
--- a/web/src/lib/features/tuning/TuningHeader.svelte
+++ b/web/src/lib/features/tuning/TuningHeader.svelte
@@ -323,9 +323,10 @@
             aria-haspopup="menu"
             aria-expanded={profileMenuOpen}
             disabled={!profiles.length}
+            title="Choose the saved profile to edit in this tuning scope."
             onclick={toggleProfileMenu}
           >
-            <span class="tuning-profile-label">Profile:</span>
+            <span class="tuning-profile-label">Saved profile:</span>
             <strong>{profileName}</strong>
             <span class="tuning-caret" aria-hidden="true">▾</span>
           </button>
diff --git a/web/src/styles/controllers.css b/web/src/styles/controllers.css
index 07704f4..4104f4e 100644
--- a/web/src/styles/controllers.css
+++ b/web/src/styles/controllers.css
@@ -318,16 +318,61 @@
   color: var(--ink-muted);
 }
 
+.ctl-note.status {
+  display: flex;
+  align-items: flex-start;
+  gap: 6px;
+}
+
+.ctl-note-label {
+  flex: none;
+  font-weight: 700;
+  color: var(--ink);
+}
+
 .ctl-note.error {
   color: var(--danger);
 }
 
+.ctl-note.error .ctl-note-label {
+  color: var(--danger);
+}
+
 .ctl-suggestions {
   display: grid;
   gap: 6px;
   margin-top: 8px;
 }
 
+.ctl-setting-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 10px;
+}
+
+.ctl-setting-row > div {
+  display: grid;
+  gap: 2px;
+  min-width: 0;
+}
+
+.ctl-setting-row strong {
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--ink);
+}
+
+.ctl-setting-row span {
+  font-size: 11px;
+  line-height: 1.45;
+  color: var(--ink-muted);
+}
+
+.ctl-setting-row .ctl-button {
+  flex: none;
+}
+
 /* Support group */
 .ctl-support {
   display: grid;
@@ -337,6 +382,25 @@
 }
 
 /* Edge onboard slots */
+.edge-slots-view {
+  max-width: 980px;
+  margin-inline: auto;
+}
+
+@media (min-width: 1800px) {
+  .edge-slots-view {
+    padding-top: 44px;
+  }
+
+  .edge-slots-view .ctl-groups {
+    max-width: 980px;
+  }
+
+  .edge-slots-view .ctl-group {
+    max-width: 560px;
+  }
+}
+
 .edge-slot-list {
   display: grid;
 }
diff --git a/web/src/styles/shell-v2.css b/web/src/styles/shell-v2.css
index f41a4f4..0b0327b 100644
--- a/web/src/styles/shell-v2.css
+++ b/web/src/styles/shell-v2.css
@@ -76,6 +76,14 @@ html {
   background: color-mix(in srgb, var(--surface-raised) 60%, transparent);
 }
 
+.sidebar-item.disabled,
+.sidebar-item.disabled:hover {
+  color: var(--ink-muted);
+  background: none;
+  cursor: not-allowed;
+  opacity: 0.48;
+}
+
 .sidebar-item.active {
   color: var(--ink);
   background: var(--surface-raised);
@@ -125,7 +133,7 @@ html {
 }
 
 /* Utility row above the views — cross-view context (target controller, web UI
-   bind address, glyph override, system readout). */
+   bind address, system readout). */
 .app-toolbar {
   display: flex;
   flex-direction: column;
diff --git a/web/src/styles/status.css b/web/src/styles/status.css
index 8d8defa..8ded511 100644
--- a/web/src/styles/status.css
+++ b/web/src/styles/status.css
@@ -259,3 +259,19 @@
     min-height: calc(100dvh - 130px); /* viewport minus measured app chrome */
   }
 }
+
+/* Very large windows: keep the user's wide/tall centering choice through the
+   1200-1600px band, then cap the dead-band so Status stays near the toolbar. */
+@media (min-width: 1800px) and (min-height: 900px) {
+  .status-view {
+    justify-content: flex-start;
+    min-height: auto;
+    max-width: 1180px;
+    margin-inline: auto;
+    padding-top: 56px;
+  }
+
+  .status-groups {
+    max-width: 1180px;
+  }
+}