@Oscar Well I can assure you that I am not a keyboard warrior as windjammer above is assuming. While I avoid getting into these things as for me this forum is all about learning from tonnes of experiences of veterans from all over, yet you have to grant me that much, I ask you, that in any war or in any battle plan, there never is and never was the correct method or one simple solution.
Only in the training institutes is one taught not to 'fight the whites' when the DS gives an exercise solution and you simply shut up and sit or pay with your course gradings.
Having said that, there are few points you may want to consider that the soldier is simple and does not think at a strategic level.
What is the rate of retaliatory strikes by India in response to spectacular terror attacks attributed directly to Pak based groups? Nil till date.
What is the reaction of a simple soldier who is put on alert every time terror strike takes place in the neighbouring country who calls for strikes on your own and you waste time again and again doing nothing while on alert and knowing that the neighbouring country has never ever retaliated and will not as you have first strike nuclear options? He will be disinterested and his reactions and actions will be sub-optimal and he will confirm in his mind that his officer cadre are all cunts!!! So any 'high alert' for him will be just the every other time usual run of the mill drill
Now, you have assumed you will be getting fairly advanced warning of an Indian strike en-route ...... while that itself is flawed.
I concede that your HUMINT capability by penetrating the armed forces of India to a degree of flag officers is commendable and leaves a lot of loop holes in any strike being formulated, but you forget that the targets for any strike are already pre-designated.
Only an authorisation of a strike is required for the strike to complete within an hour of order. There is no requirement of targets, nor of any resources marshalling. Your first and foremost warning will come just before or as soon as the strike mission is aloft .... and all the likely targets are 8 -10 mins flying time for IAF.
The Indian decision making right now is highly PM centric, and you can expect an unilateral decision even without the RM being in the loop and the strikes being carried out without putting the forces also on alert.
That is my only contention
Your entire premise of NOT having alert is made redundant that in case of ANY such terror incident in India, the PAF goes on immediate alert.