Evaluate whether a single toolchain template is justified after composition refactoring

[nradakovic]

What

Evaluate whether the post-refactor architecture now supports collapsing Linux and QNX into a single template, or whether keeping two thin platform templates remains the clearer and safer design.

This is an architectural evaluation task, not a commitment to unify templates.

Acceptance Criteria

• A documented decision exists on whether to keep two thin templates or move to one shared template.
• The decision is based on the post-refactor structure, not pre-refactor assumptions.
• The evaluation clearly identifies which remaining platform differences are data-driven and which are behavior-driven.
• If unification is rejected, the rationale is documented clearly enough to prevent repeated re-litigation.

How

• Review the refactored composition structure after shared and platform-specific extraction is complete.
• Compare the remaining Linux and QNX template responsibilities.
• Determine whether the remaining differences can be expressed cleanly as data inputs instead of behavioral branching.
• Record the result as an architecture note or follow-up issue decision.