优化后端

src/cognitive_agent/application/native_can_feedback.py

@@ -377,14 +377,18 @@ def decode_feedback(frame: CanFrame) -> dict[str, Any]:
                 "rear_brightness_level": (
                     rear_brightness_raw - 1 if 1 <= rear_brightness_raw <= 6 else None
                 ),
-                # Sheet1 rows 1896-1897 define 0x01-0x1F as colors and
-                # 0x20-0x7F as reserved.  Do not expose a reserved raw value
-                # as though it were a real cabin color.
+                # 0x42E carries a 7-bit vehicle-profile color index.  The
+                # generic matrix labels 0x20-0x7F as reserved, but the N7
+                # 127-color profile and its verified control/HIL contract use
+                # the complete 0x01-0x7F range.  Preserve that authoritative
+                # index for display and feedback matching; zero remains the
+                # matrix-defined invalid value.  Exact RGB still cannot be
+                # inferred from this frame.
                 "front_color_index": (
-                    front_color if 1 <= front_color <= 0x1F else None
+                    front_color if 1 <= front_color <= 0x7F else None
                 ),
                 "rear_color_index": (
-                    rear_color if 1 <= rear_color <= 0x1F else None
+                    rear_color if 1 <= rear_color <= 0x7F else None
                 ),
             },
         }