Admin item/tag edit pages weren't rendering because TanStack Router treated
them as children of the list route (which had no Outlet). Moving to
directory-based routing (items/index.tsx + items/$itemId.tsx) makes them
siblings that render directly in the admin layout.
Also adds UAT results for phases 35-38 and backlog item 999.12 (Admin UX Polish).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Two plans across 2 waves: backend (schema + service + routes + tests)
then frontend (hooks + tree list page + edit page + sidebar activation).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Spacing: change tree row indent from pl-5 (20px) to pl-4 (16px); remove non-standard exception entry
- Copywriting: change delete confirmation button from "Delete" to "Delete Tag"
- Visuals: declare focal point for list page (tree view) and edit page (name input)
- Typography: lower Label/Display from 12px to 11px, establishing 3px gap above 14px body
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
