Add breadcrumb navigation to draft document editor

[horacioh]

Summary

This PR adds breadcrumb navigation to the draft document editor, allowing users to see and navigate through the parent hierarchy of the document being edited.

Key Changes

• Breadcrumb computation: Added logic to compute parent paths from the document's editId (for existing docs) or id (for new docs), excluding the document itself when editing
• Resource fetching: Integrated useResources hook to fetch metadata for all parent documents in the breadcrumb chain
• UI components:
  • Created DraftBreadcrumbs component to render the breadcrumb trail with a home icon and slash separators
  • Created DraftBreadcrumbLink component to render individual breadcrumb links with document names and hover effects
• Integration: Passed breadcrumbs data to DraftMetadataEditor and rendered them in the document header above the title
• Imports: Added necessary imports for useResources, getParentPaths, useRouteLink, and Home icon

Implementation Details

• Breadcrumbs are computed using getParentPaths utility to extract the path hierarchy
• For existing documents being edited, the document itself is excluded from the breadcrumb trail
• For new documents, all parent paths are included as they represent the location context
• Breadcrumb links use the routing system to navigate to parent documents
• Fallback to path segment if document metadata/name is unavailable
• Breadcrumbs only render when data is available (conditional rendering)

https://claude.ai/code/session_015QPUw6KHe9Gvvod6SeCQtA