Insted, you follow all other authors and place h and c in your equation 2.15 by hand ("ad hoc"), multiplying the equation by -hc in order to make Shredinger equation out of it.

In classical QM they use more logical derivation of Shredinger equation varying probability flow (minimizing action) under constraints of uncertainty principle.

Also, Lorentz transformation (eq. 3.6) always is derived from the symmetry of motion - so what is the point to have all Ch 3 to copy relativity textbbooks? By the way, there is an error in this chapter: there is no such thing as center of mass of Universe in the relativity (and if it were, there would be no relativity - there would be detactable absolute frame connected with this center thus asymmetry and anisotropy of space thus violation of momentum and angular momentum conservation laws).

There are a few logical problems in the very beginning of your modelling: in your definition of time and in use of properies of human mental models to build model of reality (due to ignoring fact that time and reality are completely independent from our brain, our senses, imagination, and from all other human attributes).

Your math is not difficult to follow but there are some errors (or typos?) in it (like delta function integral 1.21 is always zero, and can not be equal to 1 unless delta variable is not z but c).

But my task is not review and correct - I simply do not see any origin or explanation of h (as well as c or G) from your math - there is non.

Therefore, it is in no way "answer to my question" about origin of h or uncertainty principle. No answer at all, sorry.