Scale games on both axes and 2x text size

All 4 games (simon_says, tic_tac_toe, memory_match, 2048):
- Changed sizing to use min(width, height) instead of just width
- Grids now scale proportionally on both axes
- All UI text now uses text_scale=2 for better visibility
- Games fill more of the screen properly on portrait mode

Fixes:
- Simon Says buttons now square grid on any orientation
- Tic-Tac-Toe grid centered vertically using full screen height
- Memory Match cards use smallest dimension for square sizing
- 2048 tiles scale and center on both axes
- All text (scores, menus, game over) now 2x larger

games/lua_examples/tic_tac_toe.lua

@@ -11,24 +11,25 @@ local GRID_SIZE = 3
 
 -- Calculate cell size based on screen size
 local function get_cell_size()
-    -- Use available space minus padding
-    local padding = math.floor(game.width() / 8)
-    local available = game.width() - (padding * 2)
+    -- Use smallest dimension to maintain square grid
+    local min_dim = math.min(game.width(), game.height())
+    local padding = math.floor(min_dim / 8)
+    local available = min_dim - (padding * 2)
     local cell_size = math.floor(available / GRID_SIZE)
     return cell_size
 end
 
 local function get_grid_start_y()
-    -- Center grid vertically with some top margin
+    -- Center grid vertically
     local cell_size = get_cell_size()
-    local grid_height = cell_size * GRID_SIZE + 2 * 2  -- spacing
+    local grid_height = cell_size * GRID_SIZE
     return math.floor((game.height() - grid_height) / 2)
 end
 
 local function get_grid_start_x()
     -- Center grid horizontally
     local cell_size = get_cell_size()
-    local grid_width = cell_size * GRID_SIZE + 2 * 2  -- spacing
+    local grid_width = cell_size * GRID_SIZE
     return math.floor((game.width() - grid_width) / 2)
 end
 
@@ -127,9 +128,9 @@ function draw()
     local cell_spacing = 2
     
     if state == STATE_MENU then
-        renderer.text(game.width() / 2 - 50, game.height() / 2 - 30, "TIC-TAC-TOE", true)
-        renderer.text(game.width() / 2 - 50, game.height() / 2, "Play vs AI", true)
-        renderer.text(game.width() / 2 - 50, game.height() / 2 + 20, "Tap to Start", true)
+        renderer.text(game.width() / 2 - 50, game.height() / 2 - 30, "TIC-TAC-TOE", true, 2)
+        renderer.text(game.width() / 2 - 50, game.height() / 2, "Play vs AI", true, 2)
+        renderer.text(game.width() / 2 - 50, game.height() / 2 + 20, "Tap to Start", true, 2)
     
     elseif state == STATE_PLAYING or state == STATE_GAME_OVER then
         -- Draw grid
@@ -157,14 +158,14 @@ function draw()
         
         if state == STATE_GAME_OVER then
             if game.vars.winner == 1 then
-                renderer.text(game.width() / 2 - 30, 10, "YOU WIN!", true)
+                renderer.text(game.width() / 2 - 30, 10, "YOU WIN!", true, 2)
             elseif game.vars.winner == 2 then
-                renderer.text(game.width() / 2 - 30, 10, "AI WINS!", true)
+                renderer.text(game.width() / 2 - 30, 10, "AI WINS!", true, 2)
             else
-                renderer.text(game.width() / 2 - 20, 10, "DRAW!", true)
+                renderer.text(game.width() / 2 - 20, 10, "DRAW!", true, 2)
             end
             
-            renderer.text(game.width() / 2 - 60, game.height() - 15, "Tap to Menu", true)
+            renderer.text(game.width() / 2 - 60, game.height() - 15, "Tap to Menu", true, 2)
         end
     end
 end