refactor: compute per-agent mount points for /agents/<name>/ structure

hive-c0re/src/lifecycle.rs

@@ -742,8 +742,29 @@ fn set_nspawn_flags(
 
     let path = format!("/etc/nixos-containers/{container}.conf");
     let original = std::fs::read_to_string(&path).with_context(|| format!("read {path}"))?;
+
+    // Compute mount points: for sub-agents, bind /agents/<name>/ with state+claude inside.
+    // For manager, use the old structure with /root/.claude and /state.
+    let agent_mount_base = if container == MANAGER_NAME {
+        None // Manager has no agent-specific mount
+    } else {
+        // Strip the "h-" prefix from container name to get agent name
+        let agent_name = container.strip_prefix(AGENT_PREFIX).unwrap_or(container);
+        Some(format!("/agents/{agent_name}"))
+    };
+
+    // For sub-agents: bind /agents/<name>/ containing state and claude
+    // For manager: use old /state and /root/.claude mounts
+    let (notes_mount, claude_mount) = if let Some(ref mount_base) = agent_mount_base {
+        // Sub-agent: state at /agents/<name>/state, claude at /agents/<name>/claude
+        (format!("{mount_base}/state"), format!("{mount_base}/claude"))
+    } else {
+        // Manager: keep current structure
+        (CONTAINER_NOTES_MOUNT.to_owned(), CONTAINER_CLAUDE_MOUNT.to_owned())
+    };
+
     let mut binds = format!(
-        "--bind={runtime}:{CONTAINER_RUNTIME_MOUNT} --bind={claude}:{CONTAINER_CLAUDE_MOUNT} --bind={notes}:{CONTAINER_NOTES_MOUNT} --bind={shared}:{CONTAINER_SHARED_MOUNT}",
+        "--bind={runtime}:{CONTAINER_RUNTIME_MOUNT} --bind={claude}:{claude_mount} --bind={notes}:{notes_mount} --bind={shared}:{CONTAINER_SHARED_MOUNT}",
         runtime = runtime_dir.display(),
         claude = claude_dir.display(),
         notes = notes_dir.display(),