Strengthen REGRESSORIUM public boundary README

[midiakiasat]

Summary

Strengthen the REGRESSORIUM public README so its sovereign role is explicit, bounded, and non-overlapping.

Before

• thin surface
• underpowered public boundary articulation
• weak adjacent-surface wiring
• insufficient distinction from neighboring sovereign functions

After

• exact REGRESSORIUM opening definition
• normalized status and boundary sections
• explicit recourse meaning in-system
• explicit non-overlap with law, state, reconciliation, cognition, execution, verification, and recognition
• explicit wiring to ANAGNORIUM

Verification

• # REGRESSORIUM
• ## Status
• ## Boundary
• ## What it does
• ## What it does not do
• ## Adjacent sovereign surfaces
• ## Public surface
• ## Package / host / repo truth
• ## Recourse meaning in-system
• ## Not this