Two calm returning-reader features.
Since-last-visit (Highlights companion, not a nav lane — per Codex):
* queries.feed gains a `since` filter; GET /api/since?ts= returns the count +
a few accepted/non-dup/visible articles discovered since the reader's last
visit (boundary-respecting; invalid/future ts → 0, no error).
* Home stores last_seen in localStorage (reads prev, then stamps now); on
Highlights, a gentle "Since you were last here, N new calm reads came in"
note with a "See what's new" reveal of a compact inline section. Dismissible.
No badges, no unread counts, no "missed" language.
PWA:
* Real PNG icons (192/512 + full-bleed maskable) rasterized from favicon.svg;
manifest fixed (azure theme to match the brand, PNG icons); apple-touch-icon.
* Minimal service worker: precache the app shell, always-fresh API + /a/ pages.
* Gentle, dismissible install banner (beforeinstallprompt → Install; iOS → the
Share → Add to Home Screen hint). Never nags.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
