Merge views into Match, expand history, and polish the UI

- Match page now holds players/match info, turn stats with a turn
  picker, and the deck lists (My deck · Preview · Opponent); the Deck
  and Turn tabs are gone. Section heights are draggable and remembered.
- History: sortable, resizable columns; deck and commander columns;
  right-click to show only or hide games with a value, with filter
  chips; stats tiles (win rate overall, last 10/100, last 7 days,
  play/draw, average length and turns) that follow the filters.
  Commanders are backfilled for games recorded before they were stored.
- Deck panel shows copies per zone against the deck total (e.g. 2/5).
- Preview can be cleared with ✕, a click on the image, or Esc.
- Customize menu stays open while toggling; Arrange covers deck
  sections and turn stats together.
- Fix squeezed nav buttons and the header pushing controls off-screen.
- Fix known opponent cards being double-counted when also revealed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -3,31 +3,30 @@
 A native Linux deck and game tracker for **Magic: The Gathering Arena** running under Steam/Proton.
 It follows MTGA's `Player.log`, much like Untapped.gg and other trackers do, and shows:
 
-Switch views with the buttons in the top bar (or Ctrl+1/2/3):
+Two views, switched from the top bar (Ctrl+1 / Ctrl+2):
 
-- **Deck**
-  - *My deck*: remaining library with draw odds, hand, battlefield, graveyard, exile, sideboard.
-    Between matches, it shows the last deck you submitted.
-  - *Opponent*: battlefield, stack, graveyard, exile, cards *known* to be in their hand or library
-    (cards you saw that went back into a hidden zone, or were revealed), and every card seen this match.
-  - *Card preview*: hover a card to see its image from [Scryfall](https://scryfall.com).
-- **Match**: life totals, poison/energy and other player counters, emblems, hand/library/graveyard
-  counts, turn timer and timeouts used, turn/phase, Bo3 score and game time. The deck view fills
-  the bottom half.
-- **Turn**: what happened this turn, for you, your opponent and in total: cards drawn, spells cast,
-  lands played, creatures died, life gained/lost, damage, discards, mills, exiles, counters and
-  tokens, plus land drops used/allowed. Use ◀ ▶ to browse earlier turns; the "Whole game" table
-  shows game totals.
-- **History**: every finished game with date, event, opponent, both decks' colours, who was on
-  the play, the result, turns and length. Click a game to open it in the Deck/Match/Turn views
-  ("Back to live" returns). Games from the previous MTGA session (`Player-prev.log`) are imported
-  on startup.
+- **Match**, from top to bottom (drag the dividers to resize; sizes are remembered):
+  - *You · Match · Opponent*: life totals, poison/energy and other player counters, commanders,
+    emblems, hand/library/graveyard counts, turn timer and timeouts, land drops used/allowed, who
+    was on the play, plus the match panel (turn, phase, game number, Bo3 score and draw count,
+    game time).
+  - *Selected turn · Turn · Whole game*: what happened in a turn for you, your opponent and in
+    total (cards drawn, spells cast, lands played, creatures died, life gained/lost, damage,
+    discards, mills, exiles, counters, tokens, land drops). The middle panel picks the turn
+    (◀ ▶, or *Live* to follow the current one).
+  - *My deck · Opponent · Preview*: remaining library with draw odds, your zones; the opponent's
+    board, graveyard, exile, cards known to be in their hand or library, and every card seen this
+    match; hover a card for its [Scryfall](https://scryfall.com) image.
+- **History**: stats (win rate overall, last 10/100 games, last 7 days, on the play/draw, average
+  length and turns) and a sortable list of every finished game: date, event, deck, commanders,
+  opponent, both decks' colours, who was on the play, result, turns and length. Click a header to
+  sort, right-click a cell to show only (or hide) games with that value; the stats follow the
+  filters. Click a game to open it in the Match view ("Back to live" returns). Games from the
+  previous MTGA session (`Player-prev.log`) are imported on startup.
 
-The Match view also shows who was on the play and, in best-of-three, who has been on the draw more.
-
-*⚙ Customize* shows or hides the items in the current view. *Customize → Arrange…* lets you
-reorder (drag, or ↑/↓) and show/hide the sections of the My deck and Opponent panels, or the
-rows of the turn view. Your choices are remembered.
+*⚙ Customize* shows or hides the match panels, turn stats, deck sections and the preview.
+*Customize → Arrange…* reorders (drag, or ↑/↓) and shows/hides the My deck and Opponent sections
+and the turn stats. Your choices are remembered.
 
 Card names, mana costs and types come from MTGA's own local card database, so they work offline.