[refactor] Manager dialog simplification (#8041)

## Summary
Simplifies the Manager dialog by consolidating components and using
BaseModalLayout with v-model support for right panel state.

## Changes
- **Consolidation**: Merged ManagerDialogContent, ManagerHeader,
ManagerNavSidebar, RegistrySearchBar, and SearchFilterDropdown into
single ManagerDialog component
- **Right panel**: Added v-model:rightPanelOpen to BaseModalLayout for
external panel state control; clicking a node card now auto-opens the
info panel
- **Cleanup**: Removed unused useResponsiveCollapse composable, TabItem
and SearchOption types
- **UI tweaks**: Moved action buttons (Install All/Update All) from
header-right-area to contentFilter area


[manager-capture.webm](https://github.com/user-attachments/assets/2dd6092a-965d-4885-8ba6-6a2cc51f024a)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8041-refactor-Manager-dialog-simplification-2e86d73d3650815ba699e49a2748b682)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: github-actions <github-actions@github.com>

src/components/dialog/GlobalDialog.vue

@@ -55,17 +55,4 @@ const dialogStore = useDialogStore()
   @apply p-2 2xl:p-[var(--p-dialog-content-padding)];
   @apply pt-0;
 }
-
-.manager-dialog {
-  height: 80vh;
-  max-width: 1724px;
-  max-height: 1026px;
-}
-
-@media (min-width: 3000px) {
-  .manager-dialog {
-    max-width: 2200px;
-    max-height: 1320px;
-  }
-}
 </style>