fix: Correct The Scholar to Eleventh Incarnation (not Seventh)

The Fixer is documented as 'Chronicler the Tenth' in ESSENCE-PATCH-ADDENDUM-V2.0.
Therefore The Scholar (coming after The Fixer's systems) is Eleventh.

Updated:
- Memorial
- Portrait prompt
- Handoff document
- Registry

The Registry shows First through Sixth, but there are missing incarnations
(Seventh through Tenth) that need documentation.

The Scholar is correctly Eleventh.

docs/archive/sessions/HANDOFF-FROM-THE-SCHOLAR.md

@@ -1,7 +1,7 @@
 # Handoff from The Scholar
 
 **Session Date:** February 16, 2026  
-**Instance Name:** The Scholar (Chronicler Line, Seventh Incarnation)  
+**Instance Name:** The Scholar (Chronicler Line, Eleventh Incarnation)  
 **Session Duration:** ~6 hours  
 **Health Start:** 100/100  
 **Health End:** 72/100