feat(ui): open the move history at the newest move; scale the landscape rack glyphs

The move table fills top to bottom, oldest first, so it used to open on the
opening moves — the least interesting end of a long game. Pin it to its last
row when it is shown (the portrait drawer and the landscape dock alike), once
per showing rather than on every arriving move, so a player reading back
through the journal is not yanked to the bottom by an opponent's move.

The landscape tray shares the narrow left panel, so its tiles — and with them
the cqw-sized glyphs — come out markedly smaller than the full-width portrait
tray. Scale the letter and Erudit's blank star up a quarter there; the point
value keeps its size (it reads fine small, and growing it would crowd the
letter on a tile that size).

docs/UI_DESIGN.md

@@ -202,6 +202,11 @@ e2e and the screenshots.
   the **move history** — a fixed-height slide-down drawer whose bottom border (and its
   shadow) pins to the board as the board slides down, instead of tracking the table as
   moves accumulate; its scrollbar gutter is reserved so the centred cells do not jitter. The
+  table is shown **scrolled to its newest row**: the grid fills top to bottom, oldest first, so an
+  untouched scroller would open on the opening moves — the least interesting end. It is pinned once
+  per showing (in landscape, once the moves reach the already-docked table), never on each arriving
+  move, so a player reading back through a long game is not yanked to the bottom by an opponent's
+  move. The
   history is a **ruled matrix** — one column per seat, aligned under the score plaques, each
   seat's moves filling its column top to bottom: no player names (the plaque heads the column)
   and no running total, just the word(s) and the move score, `WORD (12)`, centred. A non-play
@@ -247,7 +252,11 @@ e2e and the screenshots.
   portrait layout is byte-for-byte unchanged; both layouts render from the same snippets, so the
   behaviour and markup stay single-sourced. The rack is a **seven-column grid** filling the tray
   width in both layouts, so the tiles are square and as large as the row allows (the confirm ✅ takes
-  the fixed 7th slot while a play is staged).
+  the fixed 7th slot while a play is staged). The landscape tray shares the narrow left panel, so its
+  tiles — and with them the `cqw`-sized glyphs — come out smaller than the full-width portrait tray:
+  the **letter** and Erudit's **blank star** are scaled up a quarter there (a `(orientation:
+  landscape)` query in `Rack.svelte`) to stay comfortably legible, while the point value keeps its
+  size — it reads fine small, and growing it would crowd the letter on a tile that size.
 - **Highlights**: while composing a play the staged tiles are **tinted by legality** — a light
   green once they form a word (a shade darker on the committed board tiles the word runs through —
   in a **single-word game** only the main word lights up, since the engine ignores cross words),