fix(scheduler): pass --project-flow in the org-queue-sweep loop

.github/workflows/pr-review-merge-scheduler.yml

@@ -609,9 +609,20 @@ jobs:
               continue
             fi
 
+            # The scheduler requires --project-flow. Derive it per target the
+            # same way the single-repository job does: main/master default
+            # branches are GitHub Flow, develop is Git Flow, anything else
+            # defaults to GitHub Flow.
+            case "$default_branch" in
+              main|master) project_flow="github-flow" ;;
+              develop) project_flow="git-flow" ;;
+              *) project_flow="github-flow" ;;
+            esac
+
             args=(
               --repo "$repo_full_name"
               --base-branch "$default_branch"
+              --project-flow "$project_flow"
               --max-prs "$ORG_SWEEP_MAX_PRS"
               --review-workflow "Required OpenCode Review"
               --review-dispatch-limit "$ORG_SWEEP_REVIEW_DISPATCH_LIMIT"

tests/test_required_workflow_queue_contract.py

@@ -260,6 +260,12 @@ def test_org_queue_sweep_covers_target_repositories_on_a_heartbeat() -> None:
     # Queue hygiene: stale queued runs are cancelled with a logged identity.
     assert "ORG_SWEEP_STALE_QUEUE_HOURS" in workflow
     assert "/actions/runs?status=queued&per_page=100" in workflow
+    # The scheduler requires --project-flow; the sweep must derive and pass it
+    # per target repository (regression: the first sweep failed every repo with
+    # "--project-flow is required").
+    assert "--project-flow" in workflow
+    assert 'main|master) project_flow="github-flow"' in workflow
+    assert 'develop) project_flow="git-flow"' in workflow
 
 
 def test_fix_scheduler_cancels_superseded_cron_runs() -> None: