Delete confirmation dialog used wrong magic numbers for entity kind
mapping — maintenance windows showed as "alert", settings deletions
showed as "monitor". Now uses tab/section constants to match correctly.
Also: consistent [q/Esc] Back across all views (detail inline, logs,
SLA, history headers), extract detailKeys(), remove dead maxSections
variable, add nodes empty state hint, use models.Status constants in
siteOrder, delete orphaned theme.png.
lerko
