Systematic rename of all semantic anchors (#region, [DEF], @RELATION)
across 1400+ files — backend Python, frontend Svelte/TS, specs, docs:
- Flat anchors become Namespace.Module.Entity
- @RELATION references updated to match new anchor paths
- Zero business logic changes
Introduce a UX reference stage to ensure technical plans align with
user experience goals. Adds a new template, a generation step in the
specification workflow, and mandatory validation checks during
planning to prevent technical compromises from degrading the defined
user experience.
