feat(controller-status): render per-controller connection status in ctrlstatus command (task 8.3)

Adds ctrlstatus_peer_status_str (mirrors ctrlstatus_role_str's
convention: 0=unknown/1=ok/2=catching-up/3=dead, safe default fallback
for any other code) and extends cmd_ctrlstatus's per-controller print
line to render it alongside each configured controller's existing
name:address, completing the CtrlPeer.status wire field added in task
8.1 and sourced in task 8.2.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RLSNJhNoULvVcUhXEFafQC

.kiro/specs/controller-status/tasks.md

@@ -180,7 +180,7 @@
   - _Boundary: ctrlstatus_fill_
   - _Depends: 8.1_
 
-- [ ] 8.3 Render each configured controller's connection status in the `ctrlstatus` client command
+- [x] 8.3 Render each configured controller's connection status in the `ctrlstatus` client command
   - Add a status-code-to-string renderer covering all four values plus a safe fallback for an unrecognized code (mirroring the existing responder-role renderer's convention), and extend the client command's existing per-controller line to print the rendered status alongside that controller's name and address.
   - Observable: piping `ctrlstatus` through the client prints each configured controller's connection status alongside its existing name:address line.
   - _Requirements: 13.1, 13.6_

src/harness/test.c

@@ -3004,6 +3004,27 @@ static const char* ctrlstatus_role_str(uint8_t role)
     }
 }
 
+/* Map a CtrlPeer.status raw value (controller-status Req 13 delta,
+ * design.md "Design Delta — Requirement 13", Locked Decision 2 / schema
+ * delta) to a display string. UNKNOWN==0, OK==1, CATCHING_UP==2, DEAD==3;
+ * anything else is reported verbatim so an unexpected code is never
+ * silently rendered as a known one (mirrors ctrlstatus_role_str above). */
+static const char* ctrlstatus_peer_status_str(uint8_t status)
+{
+    switch (status) {
+    case 0:
+        return "unknown";
+    case 1:
+        return "ok";
+    case 2:
+        return "catching-up";
+    case 3:
+        return "dead";
+    default:
+        return "unknown-status";
+    }
+}
+
 /* `ctrlstatus` (controller-status task 4.1, Req 1.3/3.3/5.1/5.2/8.1/8.2/8.3,
  * design.md "cmd_ctrlstatus (test client) — State contract").
  *
@@ -3149,8 +3170,9 @@ int cmd_ctrlstatus(int argc, char* argv[])
             continue;
         }
 
-        printf("\t%s\t%s:%u\n", NULLSTR(peer->name) ? "?" : peer->name,
-               NULLSTR(peer->host) ? "?" : peer->host, peer->port);
+        printf("\t%s\t%s:%u\t%s\n", NULLSTR(peer->name) ? "?" : peer->name,
+               NULLSTR(peer->host) ? "?" : peer->host, peer->port,
+               ctrlstatus_peer_status_str(peer->status));
     }
 
     /* Config version + committed config version (Req 5.1) and the content