pbppic16.lib doesn't exist
There is no pbppic16.lib. For the 14-bit core the library is pbppic14.lib

Scroll down below the utility macros and look in the "Startup Code" section.

why then does it insert a "GOTO 0x04" at location 0x0000?
Because it needs to vector the the INIT location to process startup code
that didn't fit between 0x00h and 0x03h.

Scroll way down to the bottom of your pbppic14.lib, and look in the INIT
section.

The PC boot-loader software normally just re-maps whatever user code it
finds after its own jump vectors, so this normally isn't a problem.