Feat: Add KNCM_settings.cfg with nozzle cleaning macros

Created KNCM_settings.cfg with essential macros:
- CLEAN_NOZZLE: Wipe nozzle on brush/cloth
- SMART_PARK: Park nozzle at front for easy access
- LINE_PURGE: Print purge line at start
- Frame_Light_ON/OFF: Control frame LED (PD14)
- Part_Light_ON/OFF: Control part light (PD13)

Also added [output_pin] definitions for lights:
- frame_light: PD14
- part_light: PD13

This fixes: 'Unknown pin chip name rpi' error caused by
missing KNCM_settings.cfg include.

The file was previously included but didn't exist in the repo.

KNCM_settings.cfg

@@ -0,0 +1,95 @@
+# ============================================================================
+# KNCM - Nozzle Cleaning Macros
+# Simplified nozzle cleaning for reliable prints
+# ============================================================================
+
+# ----------------------------------------------------------------------------
+# CLEAN_NOZZLE - Wipe nozzle on brush/cloth
+# ----------------------------------------------------------------------------
+[gcode_macro CLEAN_NOZZLE]
+description: Clean nozzle on brush or cloth
+gcode:
+    {% set FILAMENT_TYPE = params.FILAMENT_TYPE|default("PLA")|upper %}
+    {% set CLEAN_X = params.CLEAN_X|default(0)|int %}
+    {% set CLEAN_Y = params.CLEAN_Y|default(0)|int %}
+    {% set CLEAN_Z = params.CLEAN_Z|default(0.5)|float %}
+    {% set PASSES = params.PASSES|default(3)|int %}
+    
+    RESPOND MSG="Cleaning nozzle..."
+    
+    # Move to clean position
+    G1 X{CLEAN_X} Y{CLEAN_Y} Z{CLEAN_Z} F3000
+    
+    # Wipe passes
+    {% for i in range(PASSES) %}
+        G1 X{CLEAN_X + 10} F1800
+        G1 X{CLEAN_X} F1800
+    {% endfor %}
+    
+    # Lift Z
+    G1 Z10 F600
+    
+    RESPOND MSG="Nozzle clean complete!"
+
+# ----------------------------------------------------------------------------
+# SMART_PARK - Park near front for easy access
+# ----------------------------------------------------------------------------
+[gcode_macro SMART_PARK]
+description: Park nozzle at front of bed for easy access
+gcode:
+    {% set PARK_X = params.PARK_X|default(165)|int %}
+    {% set PARK_Y = params.PARK_Y|default(10)|int %}
+    {% set PARK_Z = params.PARK_Z|default(50)|int %}
+    
+    G1 X{PARK_X} Y{PARK_Y} Z{PARK_Z} F6000
+    
+    RESPOND MSG="Printer parked at front"
+
+# ----------------------------------------------------------------------------
+# LINE_PURGE - Print purge line at start of bed
+# ----------------------------------------------------------------------------
+[gcode_macro LINE_PURGE]
+description: Print purge line at start of bed
+gcode:
+    {% set PURGE_START_X = params.START_X|default(10)|int %}
+    {% set PURGE_END_X = params.END_X|default(300)|int %}
+    {% set PURGE_Y = params.Y|default(10)|int %}
+    {% set PURGE_Z = params.Z|default(0.2)|float %}
+    {% set PURGE_AMOUNT = params.AMOUNT|default(30)|int %}
+    
+    # Move to purge start
+    G1 X{PURGE_START_X} Y{PURGE_Y} Z{PURGE_Z} F3000
+    
+    # Extrude purge line
+    G1 X{PURGE_END_X} E{PURGE_AMOUNT} F600
+    
+    # Lift Z
+    G1 Z2 F600
+    
+    RESPOND MSG="Purge line printed"
+
+# ----------------------------------------------------------------------------
+# Frame Light Control (Neptune 4 Plus)
+# ----------------------------------------------------------------------------
+[gcode_macro Frame_Light_ON]
+description: Turn on frame LED lights
+gcode:
+    SET_PIN PIN=frame_light VALUE=255
+
+[gcode_macro Frame_Light_OFF]
+description: Turn off frame LED lights
+gcode:
+    SET_PIN PIN=frame_light VALUE=0
+
+# ----------------------------------------------------------------------------
+# Part Light Control (Neptune 4 Plus)
+# ----------------------------------------------------------------------------
+[gcode_macro Part_Light_ON]
+description: Turn on part cooling fan light
+gcode:
+    SET_PIN PIN=part_light VALUE=255
+
+[gcode_macro Part_Light_OFF]
+description: Turn off part cooling fan light
+gcode:
+    SET_PIN PIN=part_light VALUE=0

optimized_user_settings.cfg

@@ -3,7 +3,7 @@
 # Optimized for Bambu Lab Hotend (23 mm³/s) & Original Hotend (15 mm³/s)
 # ============================================================================
 
-[include KNCM_settings.cfg]
+[include open4neptune-new/KNCM_settings.cfg]
 [include open4neptune-new/calibration/*.cfg]
 
 [skew_correction]
@@ -41,6 +41,20 @@ sensor_mcu: cartographer
 min_temp: 5
 max_temp: 105
 
+# ============================================================================
+# OUTPUT PINS - Neptune 4 Plus
+# ============================================================================
+
+[output_pin frame_light]
+pin: PD14
+pwm: False
+value: 0
+
+[output_pin part_light]
+pin: PD13
+pwm: False
+value: 0
+
 # ============================================================================
 # ADXL345 ACCELEROMETER
 # ============================================================================

user_settings_clean.cfg

@@ -3,7 +3,7 @@
 # Optimized for Bambu Lab Hotend (23 mm³/s) & Original Hotend (15 mm³/s)
 # ============================================================================
 
-[include KNCM_settings.cfg]
+[include open4neptune-new/KNCM_settings.cfg]
 [include open4neptune-new/calibration/*.cfg]
 
 [skew_correction]
@@ -41,6 +41,20 @@ sensor_mcu: cartographer
 min_temp: 5
 max_temp: 105
 
+# ============================================================================
+# OUTPUT PINS - Neptune 4 Plus
+# ============================================================================
+
+[output_pin frame_light]
+pin: PD14
+pwm: False
+value: 0
+
+[output_pin part_light]
+pin: PD13
+pwm: False
+value: 0
+
 # ============================================================================
 # ADXL345 ACCELEROMETER
 # ============================================================================