docs(archreview): PLAN-02 tasks.json — mark T8,T9,T16 complete (batch 3)

archreview/plans/PLAN-02-communication-store-and-forward.md.tasks.json

@@ -54,7 +54,7 @@
     {
       "id": 8,
       "subject": "Task 8: Per-target short-circuit in the retry sweep",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         7
       ]
@@ -62,7 +62,7 @@
     {
       "id": 9,
       "subject": "Task 9: Parallel per-target lanes with a small concurrency cap",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         8
       ]
@@ -113,7 +113,7 @@
     {
       "id": 16,
       "subject": "Task 16: Replicate heartbeat marks to the peer central node",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         2
       ]