Replace the CPU number field and memory/disk text inputs in the
environment form with range sliders: CPU 1-8, memory 1-16 GB, disk
1-20 GB in 1-unit steps. Each slider always writes a concrete value,
so the previous "leave blank for provider default" option is gone;
saving now persists explicit cpu/memory/disk. When editing, existing
values are parsed (GB/MiB/bare int) and clamped onto the slider range.
This file also carried the in-progress removal of the Volumes panel
from the form's data model, which rides along in this commit.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
1d14ded286