feat: add local doctor checks

crates/geth/tests/bootstrap.rs

@@ -462,6 +462,25 @@ fn wait_daemon_reports_json_timeout_without_daemon() {
     assert!(report["attempts"].as_u64().expect("attempts") >= 1);
 }
 
+#[test]
+fn doctor_reports_json_failures_without_daemon() {
+    let home = tempfile::tempdir().expect("tempdir");
+    let output = run_geth(home.path(), &["--json", "doctor"]);
+    assert!(!output.status.success());
+    let report =
+        serde_json::from_slice::<serde_json::Value>(&output.stdout).expect("decode doctor report");
+    assert_eq!(report["type"], "doctor");
+    assert_eq!(report["ok"], false);
+    let codes = report["checks"]
+        .as_array()
+        .expect("checks")
+        .iter()
+        .map(|check| check["code"].as_str().expect("code"))
+        .collect::<Vec<_>>();
+    assert!(codes.contains(&"daemon-not-running"));
+    assert!(codes.contains(&"store-missing"));
+}
+
 #[test]
 fn peer_ping_uses_daemon_owned_iroh_endpoint() {
     if skip_iroh_integration_tests() {