feat(central-ui): Retry/Discard a parked outbound node from the Flow Debugger with scope check, confirm and re-poll

The page wires FlowStepDetail's OnRetry/OnDiscard to IFlowDebugService.RetryOutboundAsync /
DiscardOutboundAsync behind the same site-scope re-check and confirm wording the Site Calls /
Notification report pages use, toasts the relay outcome, and on success re-polls Replay (same
5 s / 2 min loop) until the acted node leaves Parked. Also drops a duplicated ?correlationId=
test block that a concurrent index-only commit left in QueryStringDrillInTests.

Claude-Session: https://claude.ai/code/session_01NcMG6xXdsJbmD2wYAgkK29

docs/plans/2026-09-06-flow-debugger-followups.md.tasks.json

@@ -9,7 +9,7 @@
     {
       "id": 1,
       "subject": "Task 1: FlowStep.CorrelationId + CLI column",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         0
       ]
@@ -17,7 +17,7 @@
     {
       "id": 2,
       "subject": "Task 2: Site Calls query \u2014 filter by TrackedOperationId",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         0
       ]
@@ -25,7 +25,7 @@
     {
       "id": 3,
       "subject": "Task 3: Notification Outbox query \u2014 filter by NotificationId",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         0
       ]
@@ -33,7 +33,7 @@
     {
       "id": 4,
       "subject": "Task 4: Site Calls page accepts ?correlationId=",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         2
       ]
@@ -41,7 +41,7 @@
     {
       "id": 5,
       "subject": "Task 5: Notification report page accepts ?correlationId=",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         3
       ]
@@ -49,7 +49,7 @@
     {
       "id": 6,
       "subject": "Task 6: FlowStepDetail \u2014 report deep links + Retry/Discard controls",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         1
       ]
@@ -57,7 +57,7 @@
     {
       "id": 7,
       "subject": "Task 7: IFlowDebugService.RetryOutboundAsync / DiscardOutboundAsync",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         1
       ]
@@ -65,7 +65,7 @@
     {
       "id": 8,
       "subject": "Task 8: Flow Debugger page \u2014 wire actions, confirm, scope check, re-poll",
-      "status": "pending",
+      "status": "completed",
       "blockedBy": [
         6,
         7
@@ -90,5 +90,5 @@
       ]
     }
   ],
-  "lastUpdated": "2026-09-06T15:12:00Z"
+  "lastUpdated": "2026-09-06T16:05:00Z"
 }