Add 14-part tutorial Python files (extracted, tested)

Tutorial scripts extracted from documentation, with fixes:
- Asset filename: kenney_roguelike.png → kenney_tinydungeon.png
- Entity keyword: pos= → grid_pos= (tile coordinates)
- Frame.size property → Frame.resize() method
- Removed sprite_color (deferred to shader support)

All 14 parts pass smoke testing (import + 2-frame run).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/tutorials/part_01_grid_movement/part_01_grid_movement.py

@@ -0,0 +1,121 @@
+"""McRogueFace - Part 1: The '@' and the Dungeon Grid
+
+Documentation: https://mcrogueface.github.io/tutorial/part_01_grid_movement
+Repository: https://github.com/jmccardle/McRogueFace/blob/master/docs/tutorials/part_01_grid_movement/part_01_grid_movement.py
+
+This code is extracted from the McRogueFace documentation and can be
+run directly with: ./mcrogueface path/to/this/file.py
+"""
+
+import mcrfpy
+
+# Sprite indices for CP437 tileset
+SPRITE_AT = 64      # '@' - player character
+SPRITE_FLOOR = 46   # '.' - floor tile
+
+# Grid dimensions (in tiles)
+GRID_WIDTH = 20
+GRID_HEIGHT = 15
+
+# Create the scene
+scene = mcrfpy.Scene("game")
+
+# Load the texture (sprite sheet)
+# Parameters: path, sprite_width, sprite_height
+texture = mcrfpy.Texture("assets/kenney_tinydungeon.png", 16, 16)
+
+# Create the grid
+# The grid displays tiles and contains entities
+grid = mcrfpy.Grid(
+    pos=(100, 80),          # Position on screen (pixels)
+    size=(640, 480),        # Display size (pixels)
+    grid_size=(GRID_WIDTH, GRID_HEIGHT),  # Size in tiles
+    texture=texture
+)
+
+# Set the zoom level for better visibility
+grid.zoom = 2.0
+
+# Fill the grid with floor tiles
+for y in range(GRID_HEIGHT):
+    for x in range(GRID_WIDTH):
+        cell = grid.at(x, y)
+        cell.tilesprite = SPRITE_FLOOR
+
+# Create the player entity at the center of the grid
+player = mcrfpy.Entity(
+    grid_pos=(GRID_WIDTH // 2, GRID_HEIGHT // 2),  # Grid coordinates, not pixels!
+    texture=texture,
+    sprite_index=SPRITE_AT
+)
+
+# Add the player to the grid
+# Option 1: Use the grid parameter in constructor
+# player = mcrfpy.Entity(grid_pos=(10, 7), texture=texture, sprite_index=SPRITE_AT, grid=grid)
+
+# Option 2: Append to grid.entities (what we will use)
+grid.entities.append(player)
+
+# Add the grid to the scene
+scene.children.append(grid)
+
+# Add a title caption
+title = mcrfpy.Caption(
+    pos=(100, 20),
+    text="Part 1: Grid Movement - Use Arrow Keys or WASD"
+)
+title.fill_color = mcrfpy.Color(255, 255, 255)
+title.font_size = 18
+scene.children.append(title)
+
+# Add a position display
+pos_display = mcrfpy.Caption(
+    pos=(100, 50),
+    text=f"Player Position: ({player.x}, {player.y})"
+)
+pos_display.fill_color = mcrfpy.Color(200, 200, 100)
+pos_display.font_size = 16
+scene.children.append(pos_display)
+
+def handle_keys(key: str, action: str) -> None:
+    """Handle keyboard input to move the player.
+
+    Args:
+        key: The key that was pressed (e.g., "W", "Up", "Space")
+        action: Either "start" (key pressed) or "end" (key released)
+    """
+    # Only respond to key press, not release
+    if action != "start":
+        return
+
+    # Get current player position
+    px, py = int(player.x), int(player.y)
+
+    # Calculate new position based on key
+    if key == "W" or key == "Up":
+        py -= 1  # Up decreases Y
+    elif key == "S" or key == "Down":
+        py += 1  # Down increases Y
+    elif key == "A" or key == "Left":
+        px -= 1  # Left decreases X
+    elif key == "D" or key == "Right":
+        px += 1  # Right increases X
+    elif key == "Escape":
+        mcrfpy.exit()
+        return
+
+    # Update player position
+    player.x = px
+    player.y = py
+
+    # Update the position display
+    pos_display.text = f"Player Position: ({player.x}, {player.y})"
+
+# Set the key handler on the scene
+# This is the preferred approach - works on ANY scene, not just the active one
+scene.on_key = handle_keys
+
+# Activate the scene
+scene.activate()
+
+print("Part 1 loaded! Use WASD or Arrow keys to move.")