feat(#1838): run_merge_config_pr handler (verify pr head, ff forge main, deploy)

hive-c0re/src/rebuild_queue.rs

@@ -858,7 +858,23 @@ async fn dispatch(
 ) -> anyhow::Result<()> {
     match (entry.kind, entry.approval_id) {
         (QueueKind::Rebuild, Some(approval_id)) => {
-            crate::actions::run_approval_apply_commit(coord, Some(entry.id), approval_id).await
+            // Both ApplyCommit and MergeConfigPr approvals enqueue a Rebuild
+            // entry (they both end in a container rebuild); branch on the
+            // approval kind to pick the right pipeline. Fall back to the
+            // apply-commit path if the row can't be read — it re-fetches +
+            // surfaces a clean error itself.
+            let kind = coord
+                .approvals
+                .get(approval_id)
+                .ok()
+                .flatten()
+                .map(|a| a.kind);
+            if kind == Some(hive_sh4re::ApprovalKind::MergeConfigPr) {
+                crate::actions::run_approval_merge_config_pr(coord, Some(entry.id), approval_id)
+                    .await
+            } else {
+                crate::actions::run_approval_apply_commit(coord, Some(entry.id), approval_id).await
+            }
         }
         (QueueKind::Rebuild, None) => {
             let current_rev =