fix: mobile drawer header always renders expanded (logo parity)

MOBILE-SHELL-PARITY defect 1. SidebarHeader read shell.sidebarCollapsed
directly, so a desktop-collapsed state made the full-width (256px) mobile
drawer render a collapsed brand row (logo-only, no wordmark, expand-chevron
row) while AppSidebar forces SidebarNav + WorkspaceSwitcher to expanded —
the mismatch read as incorrect logo placement. Gate all collapse-dependent
branches on a new effectiveCollapsed computed (!isMobile && sidebarCollapsed):
desktop honours the collapse state, mobile is never collapsed so the drawer
header matches the expanded nav/switcher. Also keeps the subtask-1 close X
(on the expanded-row control) reliably visible on mobile.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/app/src/components-v2/layout/SidebarHeader.vue

@@ -50,6 +50,7 @@
  * utility at this granularity, per RFC §7.4 last-resort).
  */
 
+import { computed } from 'vue'
 import { breakpointsTailwind, useBreakpoints } from '@vueuse/core'
 import Icon from '@/components/Icon.vue'
 import { useShellUiStore } from '@/stores/useShellUiStore'
@@ -60,6 +61,23 @@ const shell = useShellUiStore()
 // v-if="isMobile" guard so both components agree on the desktop/mobile boundary.
 const isMobile = useBreakpoints(breakpointsTailwind).smaller('lg')
 
+/**
+ * Effective collapse state for rendering (MOBILE-SHELL-PARITY defect 1).
+ *
+ * The mobile drawer is ALWAYS full-width (`!w-64`), and AppSidebar forces
+ * SidebarNav + WorkspaceSwitcher to `:collapsed="false"` inside it. But this
+ * header read `shell.sidebarCollapsed` directly, so if a user had collapsed
+ * the sidebar on desktop, the mobile drawer rendered a *collapsed* brand row
+ * (logo-only, no wordmark, plus the expand-chevron row) inside a 256px panel —
+ * mismatched against the expanded nav/switcher and reading as the reported
+ * "logo placement is incorrect" defect.
+ *
+ * effectiveCollapsed gates every collapse-dependent branch below: on desktop
+ * it honours shell.sidebarCollapsed; on mobile it is always false, so the
+ * drawer header matches the expanded nav/switcher exactly.
+ */
+const effectiveCollapsed = computed<boolean>(() => !isMobile.value && shell.sidebarCollapsed)
+
 function handleCollapseClick(): void {
   if (isMobile.value) {
     // Mobile: the Drawer is the active sidebar — close it
@@ -95,14 +113,14 @@ function handleCollapseClick(): void {
 
       <!-- Wordmark + Beta pill: to the RIGHT of the logo; absent when collapsed (don't affect logo's left position). -->
       <span
-        v-if="!shell.sidebarCollapsed"
+        v-if="!effectiveCollapsed"
         class="brand-name font-bold text-base tracking-[-0.01em] whitespace-nowrap text-[var(--p-text-color)]"
       >
         Crewli
       </span>
 
       <span
-        v-if="!shell.sidebarCollapsed"
+        v-if="!effectiveCollapsed"
         class="text-[9px] font-semibold bg-primary-50 dark:bg-primary-950 text-primary-600 dark:text-primary-400 px-1.5 py-px rounded-full uppercase tracking-[0.05em]"
       >
         Beta
@@ -121,7 +139,7 @@ function handleCollapseClick(): void {
         default drawer X is force-hidden in AppSidebar so the two never overlap.
       -->
       <button
-        v-if="!shell.sidebarCollapsed"
+        v-if="!effectiveCollapsed"
         class="ms-auto w-7 h-7 border-0 bg-transparent text-[var(--p-text-muted-color)] rounded-[var(--p-border-radius)] inline-flex items-center justify-center transition-[background,color] duration-150 hover:bg-[var(--p-content-hover-background)] hover:text-[var(--p-text-color)] cursor-pointer"
         :aria-label="isMobile ? 'Sluit menu' : 'Collapse sidebar'"
         type="button"
@@ -140,7 +158,7 @@ function handleCollapseClick(): void {
       with the logo, no overhang past the aside's `overflow-hidden`.
     -->
     <div
-      v-if="shell.sidebarCollapsed"
+      v-if="effectiveCollapsed"
       class="flex justify-center py-2 border-b border-[var(--p-content-border-color)]"
     >
       <button