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>

src/mtga_assistant/ui/match_view.py

@@ -189,7 +189,7 @@ class PlayerCard(QFrame):
 class MatchView(QWidget):
     hovered = Signal(int)
 
-    def __init__(self, cards: CardDB, toggles: Toggles, parent=None):
+    def __init__(self, cards: CardDB, toggles: Toggles, turn_view: QWidget, deck_view: QWidget, parent=None):
         super().__init__(parent)
         self.cards = cards
         self.toggles = toggles
@@ -200,7 +200,7 @@ class MatchView(QWidget):
 
         self.info = QFrame()
         self.info.setObjectName("card")
-        self.turn_label = _label(name="bigNumber")
+        self.turn_label = _label(name="statValue")
         self.turn_caption = _label(name="muted")
         self.phase = _label()
         self.score = _label()
@@ -209,7 +209,7 @@ class MatchView(QWidget):
         self.duration = _label(name="muted")
         grid = QGridLayout(self.info)
         grid.setContentsMargins(14, 10, 14, 12)
-        for row, w in enumerate([_label("Turn", "cardTitle"), self.turn_label, self.turn_caption,
+        for row, w in enumerate([_label("Match", "cardTitle"), self.turn_label, self.turn_caption,
                                  self.phase, self.score, self.draws, self.duration]):
             grid.addWidget(w, row, 0, Qt.AlignmentFlag.AlignHCenter)
         grid.setRowStretch(7, 1)
@@ -221,19 +221,18 @@ class MatchView(QWidget):
         top_lay.addWidget(self.info, 2)
         top_lay.addWidget(self.opp, 3)
 
-        # The shared DeckView is re-parented into this slot when the match view is shown.
-        self.deck_slot = QWidget()
-        self.deck_slot_layout = QVBoxLayout(self.deck_slot)
-        self.deck_slot_layout.setContentsMargins(0, 0, 0, 0)
-
-        split = QSplitter(Qt.Orientation.Vertical)
-        split.addWidget(top)
-        split.addWidget(self.deck_slot)
-        split.setChildrenCollapsible(False)
-        split.setSizes([1, 1])
+        # Players + match info, then turn stats, then the deck lists; heights are draggable.
+        self.split = QSplitter(Qt.Orientation.Vertical)
+        self.split.addWidget(top)
+        self.split.addWidget(turn_view)
+        self.split.addWidget(deck_view)
+        self.split.setChildrenCollapsible(False)
+        self.split.setStretchFactor(0, 2)
+        self.split.setStretchFactor(1, 3)
+        self.split.setStretchFactor(2, 5)
         lay = QVBoxLayout(self)
         lay.setContentsMargins(0, 0, 0, 0)
-        lay.addWidget(split)
+        lay.addWidget(self.split)
 
     def render(self, t: MatchTracker, now_ms: int) -> None:
         g = t.game
@@ -246,8 +245,8 @@ class MatchView(QWidget):
 
         on = self.toggles.on
         whose = "your turn" if g.active_player == g.my_seat else "their turn"
-        self.turn_label.setText(str(g.turn or "–"))
-        self.turn_caption.setText(whose if g.turn else "pre-game")
+        self.turn_label.setText(f"Turn {g.turn}" if g.turn else "Pre-game")
+        self.turn_caption.setText(whose if g.turn else "")
         phase = pretty_enum(g.phase) if g.phase else ""
         step = pretty_enum(g.step) if g.step else ""
         self.phase.setText(" · ".join(x for x in (phase, step) if x))