Print start: soak before QGL and Z, load after Z, PA per lane temperature

PRINT_WARMUP: bed heats during the warmup, the nozzle only waits while it
is above 170C (Beacon contact limit 180C), one HOME to get over the bed,
then M190 and HEAT_SOAK. No more filament load and 220->150C cycle there.

PRINT_START (on the soaked bed): one QGL, one contact Z calibration, mesh,
heat over the bucket, load the initial tool, PA for all lanes, load the
initial tool again if a calibration changed lanes, G28 X Y reference.
Loading after the contact keeps ooze off the nozzle for the calibration.

PA: calibrate each lane at its own filament temperature (was the
temperature from before CHANGE_TOOL), and apply the loaded lane's PA
after PA_CALIBRATE_ALL_LANES (the last cached lane's PA won before).

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

macros/pressure_advance/bd_pa_spoolman.cfg

@@ -422,11 +422,14 @@ gcode:
         {% else %}
             CHANGE_TOOL LANE={lane}
 
-            # Nozzle temp: use the extruder's current target, which AFC
-            # already sets from Spoolman when the lane was loaded. Fall
-            # back to the configured default if nothing is set yet.
+            # Nozzle temp: the lane's own filament temperature (AFC, from
+            # Spoolman). Not printer.extruder.target: the template is rendered
+            # before CHANGE_TOOL runs, so that is still the previous lane's
+            # (or the print's) temperature. PA_CALIBRATE heats to it (M109).
+            {% set lane_obj = printer["AFC_stepper " ~ lane] if ("AFC_stepper " ~ lane) in printer else {} %}
+            {% set lane_temp = lane_obj.extruder_temp|default(0, true)|float %}
             {% set target = printer.extruder.target|default(0)|float %}
-            {% set nozzle_temp = target if target > 0 else cfg.fallback_nozzle_temp|float %}
+            {% set nozzle_temp = lane_temp if lane_temp > 0 else (target if target > 0 else cfg.fallback_nozzle_temp|float) %}
 
             {action_respond_info("Calibrating PA for %s (spool %d) at %.0fC..." % (lane, spool_id, nozzle_temp))}
             M117 Calibrating PA: {lane}
@@ -619,6 +622,19 @@ gcode:
     UPDATE_DELAYED_GCODE ID=_PA_POLL_LANE_CHANGE DURATION=2
 
 
+# PA_CALIBRATE_ALL_LANES sets the PA of every lane in turn (the last one
+# wins), and the lane-change poll only reacts to a change of the loaded lane.
+# Run this after it so the PA matches the lane that is actually loaded.
+[gcode_macro _PA_APPLY_LOADED_LANE]
+description: Apply the cached PA of the lane loaded in the toolhead
+gcode:
+    {% set lane = printer.AFC.current_load|default(none) if "AFC" in printer else none %}
+    {% if lane %}
+        _PA_APPLY_FOR_LANE LANE={lane}
+    {% else %}
+        RESPOND MSG="_PA_APPLY_LOADED_LANE: no lane loaded, PA unchanged"
+    {% endif %}
+
 [gcode_macro _PA_APPLY_FOR_LANE]
 description: Internal -- applies cached PA for a lane without calibrating
 # LANE=<lane_name>