Tabbed user dashboard at `/profile` that absorbs `/settings` and
surfaces bookmarks + collections in one place.
- New `/profile` shell with tabs: Overview (counts), Preferences
(theme + reader prefs, ported from /settings; works for guests
via localStorage), Account (password change; auth-gated),
Bookmarks, Collections. Guest tab list is filtered to what they
can actually use.
- `/settings` is a 308 redirect to `/profile/preferences` so old
bookmarks land cleanly. The "Settings" link in the top nav is
replaced by a Profile link between Upload and Bookmarks; Bookmarks
+ Collections stay as shortcuts per the user spec.
- Extracts `lib/components/BookmarkList.svelte` and
`lib/components/CollectionsGrid.svelte` so the top-level
/bookmarks + /collections routes and the new profile tabs render
the same UI without duplication. Both layers use a three-state
load (authenticated / guest / error) to handle network hiccups
inline.
- Deep links preserved via `?next=` on every sign-in CTA.
88 frontend unit tests + svelte-check clean; 12 of 12 e2e tests in
profile.spec.ts and reader-mode.spec.ts pass (8 other e2e failures
predate this branch and stay flagged for cleanup).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>