This is the bulk of the profile changes for U1 that led to the cooling
catiant connection.
The ugly end gcode is used by the printer's UI to complain if normal
nozzle is installed but the file was sliced for highflow.
[How to Download Pull Requests Artifacts for
Testing](https://www.orcaslicer.com/wiki/how_to_download_pr_artifacts)
"Snapmaker PLA-CF @U1" and "Snapmaker PLA-CF @U1 0.4 nozzle" are the same
product on the same printer: both pin "Snapmaker U1 (0.4 nozzle)", and only a
filament_id salt split kept them apart. The first came with the original U1
profiles (#10225); the second with the tool-changer rework (#15039), which
added the 0.4/0.6/0.8 nozzle variants and left the older preset behind.
Drop the older one and re-mint the 0.4 variant onto OFhQf8ou, the id its 0.6
and 0.8 siblings already carry, so the product holds one id across the three
nozzles; renamed_from redirects the retired name. Users of the retired preset
get the #15039 tuning - 39 keys differ, including nozzle 230 -> 240 C, plate
55 -> 65 C and vitrification 150 -> 45 C - which is what the 0.6 and 0.8
variants already ship.
"Snapmaker PLA-CF @U1 base" stays. #15039 orphaned it by having the nozzle
variants inherit fdm_filament_pla directly, so it is unreferenced, but it is a
base in the vendor's own convention - 10 of the 14 @U1 families with nozzle
variants wire them to one - and it holds U1 loading and cooling values the
variants never set. Wiring them to it would change slicing output, which is
Snapmaker's call to make, not this PR's.
Claude-Session: https://claude.ai/code/session_01Q3zm9HuyskkSb4hynviV99
* update snapmaker profiles. largely ported for Snapmaker Orca fork
* update prime volume
* set precise_outer_wall to 1
* Update per-material multi-tool ramming to the filament library
* Add per-filament overrides for toolchange retraction
* Set toolchange retraction per filament for Snapmaker U1
* set default support type to tree
* format snapmaker profiles
Eric McCann