huginn CLI whoami prints the persona door state

One bounded line: absent, stored updatedAt=<stamp>, or unreadable; no value
of the document. Test over canned Whoami answers.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/eureka-state/src/bin/huginn/main.rs

@@ -195,6 +195,7 @@ fn whoami(settings: &Settings) -> Result<u8, Trouble> {
                 render::index_state(&status.index),
                 status.schema_epoch
             ));
+            say(format_args!("persona {}", render::persona_state(&status.persona)));
             Ok(0)
         }
         Ok(other) => {

crates/eureka-state/src/bin/huginn/render.rs

@@ -2,7 +2,7 @@
 
 use std::fmt::Write;
 
-use huginn_mind::{IndexStatus, PipelineDocumentSummary, PipelineDocumentView, PipelineStatus, PipelineStatusSummary};
+use huginn_mind::{IndexStatus, PersonaStatus, PipelineDocumentSummary, PipelineDocumentView, PipelineStatus, PipelineStatusSummary};
 use serde::Serialize;
 use serde_json::Value;
 
@@ -19,6 +19,16 @@ pub fn name_of<T: Serialize>(value: &T) -> String {
     }
 }
 
+/// The persona door's state as one line: no value of the document, only the
+/// vocabulary the door answers in.
+pub fn persona_state(persona: &PersonaStatus) -> String {
+    match persona {
+        PersonaStatus::Absent => "absent".into(),
+        PersonaStatus::Stored { updated_at } => format!("stored updatedAt={updated_at}"),
+        PersonaStatus::Unreadable => "unreadable".into(),
+    }
+}
+
 /// An index status as one token and its numbers: `Behind pending=3`.
 pub fn index_state(index: &IndexStatus) -> String {
     let mut text = name_of(index);