App/isr_jump.asm was never added to wristband.uvproj, so the Port0/Port2/Port3
hardware vector redirects it defines were never assembled. Port3_Isr (declared
as interrupt 16) never actually ran on real P3 port events, causing the
edge-interrupt-driven RF decode to silently never fire. Adds the missing
CSEG/LJMP redirect for vector 40 and registers the file as FileType=2.