hostload.py drives one rdebug connection: jump(malloc) for the COFF buffer,
poke the COFF, poke the loader at 0x01880000, write the descriptor, call the
loader, and verify status 0 plus app evidence (marker cells or xhello stage 6
and a VRAM screenshot). --tftp uses the existing tftpc.bin fetch instead of a
host poke. Adds evidence for two/three fresh boots and appends the integrate
section to dwt/notes/LOADER.md, including the bit-offset result-block layout
and the create_process clobber of the descriptor.
SDD