Frontend CI failed on @typescript-eslint/no-explicit-any in three L1
post-review fix sites. Replace `(err as any).response...` with the
codebase's established structural cast
`(err as { response?: { data?: { detail?: string } } })`, matching
TicketPickerModal / FolderEditModal / ProceduralEditorPage. The
AccountSettingsPage 402 handler gets the fuller seat-limit detail shape.
tsc clean, eslint clean.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>