My question is: Does Pakistan have the technological and industrial capability to develop a reliable, accurate, and electronically resilient BVR missile system that can be fully integrated with its fighter aircraft and airborne surveillance network?
It definitely has. If management issues are sorted then the potential Pakistan has is much more.
The state organisations like Nescom/(NDC, AWC, MTC etc), PAC, NASTP, PAEC, KRL and more have tens of thousands of man-power (engineers / scientists), they got enormous setups, machinery. There's some private emerging companies too.
Obviously, there could be certain components which we'd prefer to import.
I am 100% certain, this missile is an upgrade over SD-10/ R-77. These missiles are quite old now. We are not at the league to develop missiles that can match performance of latest missiles by China or US. For very cutting edge, we'll keep importing super expensive PL-15 (or whatever future version become available). PL-15/E is atleast 1.5 to 2 million dollar a piece. For reference Meteor is 2.4 million dollars a piece. You fire a missile and it hit nothing, you just wasted 2 millions dollars. (and people here wants missile trucks to keep firing missiles as if we had free infinite supply).
The local production is important, We have significant fleet that can use locally produced missiles as old SD-10s reaches their EOL. Secondly, I am 100% sure, one day maybe soon enough we'll see FAAZ missile series onboard UCAVs and its ground based variants for SAMs. We needed local solution for mass production. We definitely cannot buy/import entire stock off the shelf. You have to start at some point for achieving local capabilities. You cannot expect to develop a PL-15 at your first attempt.
BTW, reverse engineering or atleast influencing from a design, is a very real thing. It happens around the world. Even US do (LUCAS recent example).. China has progressed massively from this approach. Entire line of their first initial products used to match strikingly similar to existing products by Russia / West. I'd certainly not mind if any of our designs are influenced from a proven product as long as the product works as expected and we can achieve local production. We just have to make best use of time and resources.