Splits the monolithic settings page into 6 focused glass components matching
the polish of the recently redesigned settings/backup page.
- SettingsHero: PageHeader with 4 live status pills (URL host, timezone +
ticking clock, locale codes, log severity tinted by level)
- IdentityCassette: groups External URL + Timezone + Locales as numbered
rows; URL field gains copy + open chips and a mint border when valid
- TelegramCassette: webhook secret with show/hide toggle and verified
status chip; cache TTL/max as oversized mono numerals with humanized
previews ("720 hrs -> 30d")
- CacheLedger: mirrors BackupLedger -- big total, gradient capacity meter,
tone-edged URL/Asset bucket rows colored by oldest entry age
- LoggingCassette: per-module overrides become tone-edged chips with
severity-colored level borders; raw-text fallback behind toggle; live
ACTIVE preview line
- SaveBar: sticky dirty-aware footer with citrus pulse, italic message,
and Discard/Save (only renders when settings differ from baseline)
No backend changes -- same /settings and /settings/telegram-cache/* endpoints.
