fix(supervisor): type worker pod annotations as Record<string, string>

@kubernetes/client-node@1.0.0 tightened V1ObjectMeta.annotations from
'unknown' to 'Record<string, string>'. The parsed JSON from the
KUBERNETES_WORKER_POD_ANNOTATIONS env var lands as 'unknown' which now
fails TS2322 at the assignment site. Cast (or validate) at the parse
boundary.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: ConProgramming

apps/supervisor/src/workloadManager/kubernetes.ts

@@ -118,7 +118,11 @@ export class KubernetesWorkloadManager implements WorkloadManager {
               "app.kubernetes.io/component": "create",
             },
             ...(Object.keys(env.KUBERNETES_WORKER_POD_ANNOTATIONS).length > 0
-              ? { annotations: { ...env.KUBERNETES_WORKER_POD_ANNOTATIONS } }
+              ? {
+                  annotations: {
+                    ...env.KUBERNETES_WORKER_POD_ANNOTATIONS,
+                  } as Record<string, string>,
+                }
               : {}),
           },
           spec: {