feat: implement AIEOS identity support (#168)

Fixes #168

AIEOS (AI Entity Object Specification) v1.1 is now fully supported.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/agent/loop_.rs

@@ -131,6 +131,7 @@ pub async fn run(
         model_name,
         &tool_descs,
         &skills,
+        Some(&config.identity),
     );
 
     // ── Execute ──────────────────────────────────────────────────