feat(#2302): thread &Ident through agent path builders

hive-c0re/src/dashboard/tombstones.rs

@@ -57,7 +57,7 @@ pub(super) fn build_tombstone_views(
                 .unwrap_or(0);
             let has_creds = claude_has_session(&Coordinator::agent_claude_dir(&name));
             TombstoneView {
-                name,
+                name: name.into_string(),
                 state_bytes,
                 last_seen,
                 has_creds,
@@ -136,7 +136,7 @@ pub(super) async fn post_purge_tombstone(
     }
     let mut errors = Vec::new();
     for dir in [
-        crate::paths::agent_state_dir(name.as_str()),
+        crate::paths::agent_state_dir(&name),
         crate::paths::applied_dir(name.as_str()),
     ] {
         if dir.exists()