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

hive-c0re/src/forge/repos.rs

@@ -420,7 +420,12 @@ pub async fn ensure_meta_remote(name: &str) -> Result<()> {
     if !is_present().await {
         return Ok(());
     }
-    let proposed_dir = Coordinator::agent_proposed_dir(name);
+    // A malformed name has no proposed config repo (repos are only created
+    // under a validated Ident), so there's nothing to wire — no-op.
+    let Ok(agent) = hive_host_sock::Ident::parse(name) else {
+        return Ok(());
+    };
+    let proposed_dir = Coordinator::agent_proposed_dir(&agent);
     if !proposed_dir.join(".git").exists() {
         return Ok(());
     }