A feed card cost ~10 Tab stops, so the tenth card sat ~135 Tabs from the top of the page, and the
only keyboard focus ring (a 60% accent outline on the thumbnail) all but vanished on the dark glass.
First slice of the E11 keyboard layer (S4a); Home, Plex and the tables follow in S4b/S4c.
- `lib/listNav`: one window listener over every registered list, walked in document order. `j`/`k`
step item to item (on into the next list — owner decision D4), the arrows move around a grid, Enter
clicks the item's own `data-nav-open` element, so it opens exactly like a click. An item root is
never a Tab stop: it gets `tabindex=-1` only while the keyboard is on it, and keeps it until the next
item takes it, so the player's focus restore lands back on the card. The first `j` takes the first
card you can see, not the top of the list.
- `VirtualGrid` takes part with `keyboardNav` (column count + scrolling an unmounted row in);
`VirtualFeed` turns it on, so the feed, the library and the channel page all have it.
- Keymap: two-step sequences (`g h`) whose pending step belongs to the scope that started it; the
page-level scopes (`page`, `search`, `list`) are quiet while a layer that owns the keyboard is open,
enforced in `dispatch`. A test pins the owner's rule that none of them needs a modifier on the
Hungarian layout.
- `g h/f/c/p/x/n/m/d/s/,` jump to a module this account can reach; `s` focuses the header search box
and selects the old query; Escape in it hands the keyboard back to the page (Plex's typeahead spends
its first Escape on its panel).
- Hover popovers are passive layers: an open tooltip still takes Escape first but no longer silences
the page keys.
- Focus ring (owner decision D2 = B): solid 2px accent around the whole item; the app-wide button/
link/row ring goes from 60% to solid too. The item keeps a transparent resting outline because the
video card transitions `all` — without it every `j` flashed a 3px white ring (measured in Chrome).
- Help sheet: the new keys, in a fixed order after the surface's own; a `g` chord only for a reachable
module; opened over a player or dialog it leaves out the page-level keys and the context-menu key,
which nothing can reach there (the latter pre-existing since E10).
- CLAUDE.md: a canonical-patterns row for list/grid keys (`useListNav` + `navItemAttrs` +
`data-nav-open`, not a private arrow-key handler).
peter
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