Base-aware so the frozen `/` is untouched (it's still the live, indexed site
until cutover); the new behavior applies only to /news. At cutover `/` becomes
the hub and only /news's behavior remains.
- defaultView(base): /news bare → Latest (the live firehose); `/` bare → Highlights.
- Brief is canonically /news?view=highlights, with ?view=today kept as an alias.
- Latest is pure chronological on /news — stop passing `home` into it (geo scope
belongs to Highlights). The Closer-to-Home card/dial is hidden on /news Latest;
Highlights keeps the scope dial. `/`'s Latest keeps geo (frozen).
- Back fixed: on /news it shows only for genuine drill-ins (tag/source/search),
not the top-level lanes (Latest/Highlights/Following); `/` keeps its old rule.
- goBack's app-safe fallback lands on the base's default view.
feednav.js gains defaultView + def-aware parse/build; 36 frontend tests (9 new),
build clean. /news stays noindex.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
thejayman77
54761f5083