Rename GPU models: RZX→RTX, RZ→RX

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

art/big_cases.py

@@ -644,7 +644,7 @@ def print_overlay(model_text, style="normal"):
 
     elif style == "stamp":
         # 1) 底层被磨掉/发暗的原型号痕迹（原先低配型号残影）
-        orig_text = "RZX 50" if "80" in model_text else "PMD 60"
+        orig_text = "RTX 50" if "80" in model_text else "PMD 60"
         text57(c, x_start + 4, y_start + 1, orig_text, "z", scale=scale, gap=1)
         text57(c, x_start + 5, y_start + 2, orig_text, "k", scale=scale, gap=1)
 
@@ -683,15 +683,15 @@ def print_overlay(model_text, style="normal"):
     return c
 
 
-def print_skew(model_text="RZX 80Ti"):
+def print_skew(model_text="RTX 80Ti"):
     return print_overlay(model_text, "skew")
 
 
-def print_stamp(model_text="RZX 80Ti"):
+def print_stamp(model_text="RTX 80Ti"):
     return print_overlay(model_text, "stamp")
 
 
-def print_normal(model_text="RZX 80Ti"):
+def print_normal(model_text="RTX 80Ti"):
     return print_overlay(model_text, "normal")