Fix: Remove gcode_variable (not supported in older Klipper)

The 'gcode_variable' section is not available in all Klipper versions.
Removed it and simplified KNCM_settings.cfg to use direct defaults.

Also reverted to 'probe:z_virtual_endstop' which is correct when
[mcu rpi] is defined in printer.cfg.

Changes:
- KNCM_settings.cfg: Removed [gcode_variable printer_settings]
- user_settings_clean.cfg: endstop_pin: probe:z_virtual_endstop
- optimized_user_settings.cfg: endstop_pin: probe:z_virtual_endstop

KNCM_settings.cfg

@@ -6,30 +6,12 @@
 # ----------------------------------------------------------------------------
 # PRINTER VARIABLES - Neptune 4 Plus
 # ----------------------------------------------------------------------------
-# Adjust these values for your specific printer model!
+# Adjust these values in your user_settings.cfg if needed!
 # ----------------------------------------------------------------------------
 
-[gcode_variable printer_settings]
 # Bed dimensions (not nozzle travel, but usable bed area)
 # N4=229, N4Plus=330, N4Max=430
-variable_printer_bed_y_max: 330
+# This is set via mesh_max in [bed_mesh] section
-
-# Nozzle clean position (front-left corner, adjust for your brush/cloth)
-variable_clean_x: 0
-variable_clean_y: 0
-variable_clean_z: 0.5
-
-# Park position (front center for easy access)
-variable_park_x: 165
-variable_park_y: 10
-variable_park_z: 50
-
-# Purge line settings
-variable_purge_start_x: 10
-variable_purge_end_x: 300
-variable_purge_y: 10
-variable_purge_z: 0.2
-variable_purge_amount: 30
 
 # ----------------------------------------------------------------------------
 # CLEAN_NOZZLE - Wipe nozzle on brush/cloth
@@ -38,9 +20,9 @@ variable_purge_amount: 30
 description: Clean nozzle on brush or cloth
 gcode:
     {% set FILAMENT_TYPE = params.FILAMENT_TYPE|default("PLA")|upper %}
-    {% set CLEAN_X = params.CLEAN_X|default(printer_settings.clean_x)|int %}
+    {% set CLEAN_X = params.CLEAN_X|default(0)|int %}
-    {% set CLEAN_Y = params.CLEAN_Y|default(printer_settings.clean_y)|int %}
+    {% set CLEAN_Y = params.CLEAN_Y|default(0)|int %}
-    {% set CLEAN_Z = params.CLEAN_Z|default(printer_settings.clean_z)|float %}
+    {% set CLEAN_Z = params.CLEAN_Z|default(0.5)|float %}
     {% set PASSES = params.PASSES|default(3)|int %}
     
     RESPOND MSG="Cleaning nozzle..."
@@ -65,9 +47,9 @@ gcode:
 [gcode_macro SMART_PARK]
 description: Park nozzle at front of bed for easy access
 gcode:
-    {% set PARK_X = params.PARK_X|default(printer_settings.park_x)|int %}
+    {% set PARK_X = params.PARK_X|default(165)|int %}
-    {% set PARK_Y = params.PARK_Y|default(printer_settings.park_y)|int %}
+    {% set PARK_Y = params.PARK_Y|default(10)|int %}
-    {% set PARK_Z = params.PARK_Z|default(printer_settings.park_z)|int %}
+    {% set PARK_Z = params.PARK_Z|default(50)|int %}
     
     G1 X{PARK_X} Y{PARK_Y} Z{PARK_Z} F6000
     
@@ -79,11 +61,11 @@ gcode:
 [gcode_macro LINE_PURGE]
 description: Print purge line at start of bed
 gcode:
-    {% set PURGE_START_X = params.START_X|default(printer_settings.purge_start_x)|int %}
+    {% set PURGE_START_X = params.START_X|default(10)|int %}
-    {% set PURGE_END_X = params.END_X|default(printer_settings.purge_end_x)|int %}
+    {% set PURGE_END_X = params.END_X|default(300)|int %}
-    {% set PURGE_Y = params.Y|default(printer_settings.purge_y)|int %}
+    {% set PURGE_Y = params.Y|default(10)|int %}
-    {% set PURGE_Z = params.Z|default(printer_settings.purge_z)|float %}
+    {% set PURGE_Z = params.Z|default(0.2)|float %}
-    {% set PURGE_AMOUNT = params.AMOUNT|default(printer_settings.purge_amount)|int %}
+    {% set PURGE_AMOUNT = params.AMOUNT|default(30)|int %}
     
     # Move to purge start
     G1 X{PURGE_START_X} Y{PURGE_Y} Z{PURGE_Z} F3000

optimized_user_settings.cfg

@@ -13,7 +13,7 @@
 # ============================================================================
 
 [stepper_z]
-endstop_pin: cartographer:z_virtual_endstop
+endstop_pin: probe:z_virtual_endstop
 homing_retract_dist: 0
 
 [mcu cartographer]

user_settings_clean.cfg

@@ -13,7 +13,7 @@
 # ============================================================================
 
 [stepper_z]
-endstop_pin: cartographer:z_virtual_endstop
+endstop_pin: probe:z_virtual_endstop
 homing_retract_dist: 0
 
 [mcu cartographer]