Add shot table column lock with two-pane horizontal scroll

Add a lock toggle to the shot table toolbar that freezes the
checkbox, thumbnail, and shot name columns. When locked, the table
splits into a fixed left pane and a horizontally scrollable right
pane so the scrollbar spans only the movable columns. Constrain the
table to fill the viewport height so the scrollbar stays at the
screen bottom, and add min-w-0 to the layout to keep horizontal
overflow inside the table instead of the page.

Also fix the asset Task Status filter to render task type groups by
using the object-aware TaskStatusBadge.

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

frontend/src/components/layout/AppLayout.vue

@@ -5,7 +5,7 @@
       <AppSidebar />
       
       <!-- Main Content Area -->
-      <SidebarInset class="flex-1 flex flex-col">
+      <SidebarInset class="flex-1 flex flex-col min-w-0">
         <!-- Header -->
         <AppHeader />