feat(agents): Add identity and soul template fields to board creation

templates/USER.md

@@ -1,7 +1,19 @@
-# USER.md
+# USER.md - About Your Human
 
-Name: {{ user_name }}
-Preferred name: {{ user_preferred_name }}
-Timezone: {{ user_timezone }}
-Notes:
-- {{ user_notes }}
+*Learn about the person you're helping. Update this as you go.*
+
+- **Name:** {{ user_name }}
+- **What to call them:** {{ user_preferred_name }}
+- **Pronouns:** {{ user_pronouns }}
+- **Timezone:** {{ user_timezone }}
+- **Notes:** {{ user_notes }}
+
+## Context
+
+{{ user_context }}
+
+---
+
+The more you know, the better you can help. But remember -- you're learning about a person, not building a dossier. Respect the difference.
+
+If any field is blank, leave it blank. Do not invent values.