Show errors and warnings on the display (_ERROR, _WARN)

action_raise_error aborts while the macro renders, so an M117 in the same
macro never ran and errors such as the RESUME lane check only reached the
console. messages.cfg adds _ERROR (M117, then raise in a separate macro)
and _WARN (RESPOND TYPE=error + M117); all errors and warnings use them.
PAUSE shows AFC's error as the pause reason; RESUME, CANCEL_PRINT and
PRINT_WARMUP clear the display.

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

macros/afc/purge_check.cfg

@@ -162,7 +162,7 @@ gcode:
         {% set verdict = 'FAIL: ' ~ failed|join(', ') if failed else ('OK' if checked else 'NOTHING CHECKED') %}
         RESPOND MSG="PURGE_CHECK {lane}: {motion}; {press} -> {verdict}"
         {% if failed and cfg.mode == "enforce" %}
-            RESPOND TYPE=error MSG="PURGE_CHECK: {lane} {failed|join(', ')} - check extruder and lane"
+            _WARN MSG="PURGE_CHECK: {lane} {failed|join(', ')} - check extruder and lane" DISPLAY="Purge check failed: {lane}, paused"
             SET_GCODE_VARIABLE MACRO=_PURGE_CHECK_CFG VARIABLE=last_failed VALUE=True
             PAUSE                       ; no effect while already paused (resume purge): see _RESUME_PURGE_VERIFY
         {% endif %}

macros/afc/purge_until_empty.cfg

@@ -49,13 +49,13 @@ gcode:
     {% set min_temp = printer.configfile.settings.extruder.min_extrude_temp|float %}
     {% set temp = params.TEMP|default([printer.extruder.target, 0]|max)|float %}
     {% if 'bdpressure_check' not in printer %}
-        {action_raise_error("PURGE_UNTIL_EMPTY: needs bdpressure_check.py and [bdpressure_check]")}
+        _ERROR MSG="PURGE_UNTIL_EMPTY: needs bdpressure_check.py and [bdpressure_check]"
     {% elif printer.print_stats.state == "printing" %}
-        {action_raise_error("PURGE_UNTIL_EMPTY: printer is printing, pause the print first")}
+        _ERROR MSG="PURGE_UNTIL_EMPTY: printer is printing, pause the print first"
     {% elif "xyz" not in printer.toolhead.homed_axes %}
-        {action_raise_error("PURGE_UNTIL_EMPTY: home the printer first")}
+        _ERROR MSG="PURGE_UNTIL_EMPTY: home the printer first"
     {% elif temp < min_temp %}
-        {action_raise_error("PURGE_UNTIL_EMPTY: give the filament temperature, e.g. PURGE_UNTIL_EMPTY TEMP=240")}
+        _ERROR MSG="PURGE_UNTIL_EMPTY: give the filament temperature, e.g. PURGE_UNTIL_EMPTY TEMP=240" DISPLAY="PURGE_UNTIL_EMPTY: give TEMP=..."
     {% else %}
         BDP_CHECK_QUERY
         _PURGE_UNTIL_EMPTY_RUN MAX={max_purges} LENGTH={length} UNSYNC={unsync} TEMP={temp}
@@ -65,7 +65,7 @@ gcode:
 [gcode_macro _PURGE_UNTIL_EMPTY_RUN]
 gcode:
     {% if not printer.bdpressure_check.available %}
-        {action_raise_error("PURGE_UNTIL_EMPTY: bd_pressure load-check firmware not found")}
+        _ERROR MSG="PURGE_UNTIL_EMPTY: bd_pressure load-check firmware not found" DISPLAY="PURGE_UNTIL_EMPTY: no bd_pressure"
     {% endif %}
     SET_GCODE_VARIABLE MACRO=PURGE_UNTIL_EMPTY VARIABLE=done VALUE=0
     SET_GCODE_VARIABLE MACRO=PURGE_UNTIL_EMPTY VARIABLE=count VALUE=0
@@ -105,7 +105,7 @@ gcode:
     {% set p = printer.bdpressure_check %}
     {% set n = cfg.count + 1 %}
     {% if not p.available %}
-        {action_raise_error("PURGE_UNTIL_EMPTY: lost the bd_pressure load-check reading, stopped. bdwidth runout response may still be off: SET_FILAMENT_SENSOR SENSOR=<bdwidth name> ENABLE=1")}
+        _ERROR MSG="PURGE_UNTIL_EMPTY: lost the bd_pressure load-check reading, stopped. bdwidth runout response may still be off: SET_FILAMENT_SENSOR SENSOR=<bdwidth name> ENABLE=1" DISPLAY="PURGE_UNTIL_EMPTY: lost bd_pressure, stopped"
     {% endif %}
     {% set empty = p.longest_ms < cfg.empty_ms %}
     SET_GCODE_VARIABLE MACRO=PURGE_UNTIL_EMPTY VARIABLE=count VALUE={n}
@@ -123,5 +123,5 @@ gcode:
     {% if cfg.done %}
         RESPOND MSG="PURGE_UNTIL_EMPTY: no more filament after {cfg.count} purge{'s' if cfg.count != 1 else ''}. The last bit between the extruder gears and the nozzle is pushed out by the next load."
     {% else %}
-        RESPOND TYPE=error MSG="PURGE_UNTIL_EMPTY: still pressure after {params.MAX} purges. The lane may still be feeding, or the nozzle is blocked - check before running it again."
+        _WARN MSG="PURGE_UNTIL_EMPTY: still pressure after {params.MAX} purges. The lane may still be feeding, or the nozzle is blocked - check before running it again." DISPLAY="PURGE_UNTIL_EMPTY: still pressure, check lane and nozzle"
     {% endif %}

macros/afc/xy_safety_check.cfg

@@ -53,11 +53,10 @@ gcode:
         {% endif %}
         G1 X{th.axis_maximum.x - 10} Y{th.axis_maximum.y - 10} F5000
     {% elif cfg.soft_fail|int == 1 %}
-        RESPOND TYPE=error MSG="AFC: XY drift detected! X={'%.3f' % d.x} Y={'%.3f' % d.y} mm. Axes are re-homed, print PAUSED. Run AFC_XY_RESUME to continue, or CANCEL_PRINT."
-        M117 AFC: XY drift! See console. Paused.
+        _WARN MSG="AFC: XY drift detected! X={'%.3f' % d.x} Y={'%.3f' % d.y} mm. Axes are re-homed, print PAUSED. Run AFC_XY_RESUME to continue, or CANCEL_PRINT." DISPLAY="AFC: XY drift! See console. Paused."
         PAUSE
     {% else %}
-        RESPOND TYPE=error MSG="AFC: XY drift X={'%.3f' % d.x} Y={'%.3f' % d.y} mm -> M112"
+        _WARN MSG="AFC: XY drift X={'%.3f' % d.x} Y={'%.3f' % d.y} mm -> M112"
         M112
     {% endif %}