Cover both dose models explicitly now that density is the default

grblHAL-glowforge 03d70e0, pinned here, makes density the shipped model
and $35 the density floor at 10. Every analog session in the stream
harness now selects its model rather than inheriting it: without that the
flip would have quietly turned them into density runs and taken the
analog fallback's coverage with them. laser.power-floor carries the new
floor and its PWMSAR minimum, and its description no longer describes
$35 as a duty floor.

All ten stream sessions pass on the new defaults, with the analog duties
shifting exactly as the floor predicts - min_value 12, gradient 0.115 -
along with both C harnesses and the lifecycle harness.

Recorded in BRINGUP and the campaign log, including what the defaults
rest on and what they do not: the seven ladders ran at F300 and F100 at
constant power, so production feeds, M4 into corners and the raster path
remain unproven on hardware.

meta-forgefirm/recipes-forgefirm/grblhal-glowforge/grblhal-glowforge-pin.inc

@@ -2,5 +2,5 @@
 # changes; keep only SRCREV and PV here - the image manifest leaves
 # *-pin.inc out of the layer content hash because the component entry
 # already identifies the pinned source (forgefirm-image-manifest.bbclass).
-SRCREV = "f7e8c17bb3065a6b27cef4bb1099c9564359980e"
+SRCREV = "03d70e01f6abc66faeeed6304ab2de02e4cadedc"
 PV = "0.1.0"