One might logically assume that if astrology is capable of anticipating major life events, should it not also be able to forecast the single inevitable event in the lives of all living things -- death?

The short answer is "No.  Astrology has no fool-proof technique for predicting death."

While astrology can reliably suggest major life occurrences -- including times when the health may be threatened -- measurements definitively indicating death have yet to be consistently identified.   Furthermore, I'd be shocked if very many astrologers would even want such a method for anticipating the end of life.  That is far too much responsibility for any mortal being.

Perhaps we can rationalize that the death experience represents something different for each person.  For example, a long-suffering victim of an acute, debilitating disease may greet death willingly as an end to the relentless, prolonged pain.  Similarly, those with strong spiritual or religious beliefs may not be fearful of death, seeing it as a transition rather than an end.

Retrospectively, we can often see measurements in a spouse or other family member's chart that can suggest loss of someone close to them.  These measurements, however, happen much more frequently than an associated death actually occurs.  And really, what would be gained if astrology could accurately predict death?