Update KT: Emphasize skills backup is critical

- Document skill counts and sizes
- Note Allegro has 27 skills, Adagio has 25 (different sets)
- Skills represent learned capabilities - must be backed up

docs/kt-ezra-household-checkpoint-system.md

@@ -45,10 +45,17 @@ SOUL.md                 # Conscience/principles
 config.yaml            # Harness configuration
 .env                   # Environment variables
 memories/              # Durable memories
-skills/                # Custom skills (if any)
+skills/                # Custom skills (~8-9MB per wizard)
 work/                  # Active work items
 ```
 
+**SKILLS BACKUP IS CRITICAL:**
+- Allegro: 27 skills (8.6MB)
+- Adagio: 25 skills (8.5MB) - DIFFERENT set than Allegro
+- Each wizard has custom skill selections based on role
+- Skills represent learned capabilities and procedural memory
+- MUST be included in checkpoint - do not skip
+
 **DO NOT copy:**
 - `state.db` (too large, changes too frequently)
 - `cache/` (ephemeral)