sb-builder - Qt6 GUI to drive SlackBuild tooling on a build VM

Age	Commit message (Expand)	Author	Files	Lines
20 hours	Phase 4 note: migrate NODOWNLOAD=yes hints to DOWNLOAD="no"	Danilo M.	1	-1/+5
20 hours	Phase 2 spec: structured read-only hint view	Danilo M.	1	-1/+3
20 hours	Dashboard: visible neutral swatch, note tiles as future entry points	Danilo M.	1	-0/+5
21 hours	Add phase 1 implementation plan, refine spec	Danilo M.	1	-21/+33
21 hours	Initial commit: sb-builder build VM GUI	Danilo M.	1	-0/+310