Stage 9.2: mixer operator Tumbler storyline with key drive item

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

art/sprites.py

@@ -649,6 +649,21 @@ def hw_wallet():
     return c
 
 
+def key_drive():
+    """Tumbler 的密钥盘（16×16，一格）：斜放的旧式数据棒，深紫机身、金属接口、一枚红色指示灯和手写标签。"""
+    c = Canvas(16, 16)
+    c.rect(3, 4, 12, 11, 'V')                                  # 机身
+    c.rect(3, 4, 12, 4, 'v'); c.rect(3, 4, 3, 11, 'v')         # 受光边
+    c.rect(4, 11, 12, 11, 'n'); c.rect(12, 5, 12, 11, 'n')     # 背光边
+    c.rect(13, 6, 15, 9, 'l'); c.rect(13, 9, 15, 9, 'm')       # 金属接口
+    c.put(14, 7, 'k'); c.put(14, 8, 'k')
+    c.rect(5, 6, 9, 9, 'w')                                    # 手写标签
+    c.rect(6, 7, 8, 7, 'k'); c.rect(6, 8, 7, 8, 'k')
+    c.put(11, 6, 'R')                                          # 指示灯
+    outline(c)
+    return c
+
+
 SPRITES = {
     'gpu_guide': guide,
     'gpu_burnt_f': lambda: gpu_front('e', 'c', burnt=True),
@@ -658,6 +673,7 @@ SPRITES = {
     'rig': rig,
     'terminal': terminal,
     'hw_wallet': hw_wallet,
+    'key_drive': key_drive,
     'asic_m1': lambda: asic('M1'),
     'asic_m2': lambda: asic('M2'),
     'asic_m3': lambda: asic('M3'),