Replace the single-column-only feed with a max-columns model: one
Columns setting (1 / 2 / 3 / ∞) where 1 is the reading list and
anything wider packs into a Google-Keep-style column grid. There is
deliberately no separate list/grid mode — the setting is a ceiling,
and widths that only fit one column fall back to the flow list.
- ColumnGrid: absolute-positioned packing that only translates cards,
so appends and reorders never remount them; sticky column assignment
keeps existing cards in place when new memos arrive; tiles are capped
at 360px with a fade; columns clamp to 420px and center.
- Column one is the action column: the composer and active filters
stack as its first tile, and a just-created memo is pinned directly
beneath them.
- Multi-column always renders compact cards (policy centralized in
PagedMemoList and threaded through renderer(memo, { compact })).
- Setting persists in ViewContext localStorage; the settings menu
derives its options from the context's canonical value list.
Add a persisted "Link preview" toggle (default on) to the memo
display-settings popover, mirroring the compact-mode setting. When turned
off, link-preview cards are hidden across all memo views and the metadata
request is skipped (the gate sits at the paragraph renderer and reads the
preference from ViewContext). Resolves the request in #6045.
Memo list views hard-coded compact rendering, truncating long memos by
default. Make full content the default and add a persisted 'Compact mode'
toggle (default off) in the display-settings popover, backed by the
localStorage ViewContext. Wire Home/Explore/Archived/UserProfile to read
it; add the compact-mode label across all locales.
