refactor: decompose TopBar into composable shell with children slot

TopBar was a monolith that hardcoded server-specific controls (status
filters, time range, auto-refresh, search trigger). Extract these into
standalone SearchTrigger and AutoRefreshToggle components. TopBar now
accepts children for the center slot, letting consumers compose their
own controls. Fixes cameleer/cameleer-saas#53.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/pages/Inventory/sections/LayoutSection.tsx

@@ -5,6 +5,8 @@ import type { SidebarTreeNode } from '../../../design-system/layout/Sidebar/Side
 import { StatusDot } from '../../../design-system/primitives/StatusDot/StatusDot'
 import { Box, Settings, FileText, ChevronRight } from 'lucide-react'
 import { TopBar } from '../../../design-system/layout/TopBar/TopBar'
+import { SearchTrigger } from '../../../design-system/layout/TopBar/SearchTrigger'
+import { AutoRefreshToggle } from '../../../design-system/layout/TopBar/AutoRefreshToggle'
 
 // ── DemoCard helper ──────────────────────────────────────────────────────────
 
@@ -122,7 +124,7 @@ export function LayoutSection() {
       <DemoCard
         id="topbar"
         title="TopBar"
-        description="Top navigation bar with breadcrumb, search trigger, status filters, time range, environment badge, and user avatar."
+        description="Composable top navigation bar. Consumers pass children for the center slot (search, filters, etc.). Shell provides breadcrumb, theme toggle, env badge, and user menu."
       >
         <div className={styles.topbarPreview}>
           <TopBar
@@ -132,9 +134,11 @@ export function LayoutSection() {
               { label: 'order-ingest' },
             ]}
             environment="production"
-
             user={{ name: 'Hendrik' }}
-          />
+          >
+            <SearchTrigger onClick={() => {}} />
+            <AutoRefreshToggle active={true} onChange={() => {}} />
+          </TopBar>
         </div>
       </DemoCard>
     </section>