docs: Improve Document ArchitecturalComparison.md

[couchdeveloper]

This pull request adds new sections to the Documentation/ArchitecturalComparison.md file to clarify the motivation behind EffectComponents and to explain the tradeoff between code volume and explicitness. These additions help developers understand why the architecture exists and how the explicitness of transition functions improves reliability and reusability compared to traditional ViewModel patterns.

Motivation and architectural clarity:

• Added a "Motivation" section explaining how EffectComponents addresses the implicit state-machine bugs common in SwiftUI by making workflows explicit and manageable through a single transition function.

Explicitness vs. code volume:

• Added a discussion on the tradeoff between longer explicit transition functions and shorter, but more implicit, ViewModel implementations. This section outlines how explicit state transitions improve maintainability, testability, and reusability, and why the additional code is not just boilerplate.