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/blobifier/blobifier.cfg

@@ -291,9 +291,9 @@ gcode:
   # ======================================================================================
   
   {% if "xyz" not in printer.toolhead.homed_axes %}
-    RESPOND MSG="BLOBIFIER: Not homed! Home xyz before blobbing"
+    _WARN MSG="BLOBIFIER: Not homed! Home xyz before blobbing"
   {% elif printer.quad_gantry_level and printer.quad_gantry_level.applied == False %}
-    RESPOND MSG="BLOBIFIER: QGL not applied! run quad_gantry_level before blobbing"
+    _WARN MSG="BLOBIFIER: QGL not applied! run quad_gantry_level before blobbing"
   {% else %}
     
     # Part cooling fan
@@ -780,7 +780,7 @@ gcode:
   {% set position_x = bl.skew_correction %}
 
   {% if "xyz" not in printer.toolhead.homed_axes %}
-    {action_raise_error("BLOBIFIER: Not homed. Home xyz first")}
+    _ERROR MSG="BLOBIFIER: Not homed. Home xyz first"
   {% endif %}
   
   SET_GCODE_VARIABLE MACRO=_BLOBIFIER_COUNT VARIABLE=last_shake VALUE={count.current_blobs}