Build: DietPi OS minimization
- dietpi-postinstall.sh: first-boot setup from DietPi minimal with only
needed packages (Python, JACK, cmake, GPIO libs, I2C tools)
- minimize.sh: removes unused packages, systemd services, and kernel
modules with --dry-run and --aggressive modes; saves before/after profiles
- build-minimal-image.sh: produces flashable SD card image from scratch
(download DietPi + provision) or from a running SD card device
- baseline-footprint.md: documents before/after RAM, disk, boot time
targets and verification checklist
Closes t_38b86d31 — DietPi OS minimization
shawn
39bac0b0cd