[safe-output-integrator] Add missing merge-pull-request safe-output test workflow and compiler test

pkg/cli/workflows/test-copilot-merge-pull-request.md

@@ -0,0 +1,26 @@
+---
+on:
+  workflow_dispatch:
+permissions:
+  contents: read
+  pull-requests: read
+engine: copilot
+safe-outputs:
+  merge-pull-request:
+    max: 1
+    required-labels: ["automerge"]
+    allowed-branches: ["feature/*", "fix/*"]
+timeout-minutes: 5
+---
+
+# Test Copilot Merge Pull Request
+
+Test the `merge_pull_request` safe output type with the Copilot engine.
+
+## Task
+
+Merge pull request #1 using the "squash" merge method with:
+- commit_title: "Test: Squash merge via automated workflow"
+- commit_message: "This pull request was merged automatically by the Copilot test workflow to verify the merge_pull_request safe output type."
+
+Output results in JSONL format using the `merge_pull_request` tool.

pkg/workflow/compiler_safe_outputs_config_test.go

@@ -757,6 +757,23 @@ func TestAddHandlerManagerConfigEnvVar(t *testing.T) {
 			checkJSON:    true,
 			expectedKeys: []string{"report_incomplete"},
 		},
+		{
+			name: "merge_pull_request config",
+			safeOutputs: &SafeOutputsConfig{
+				MergePullRequest: &MergePullRequestConfig{
+					BaseSafeOutputConfig: BaseSafeOutputConfig{
+						Max: strPtr("1"),
+					},
+					RequiredLabels:  []string{"automerge"},
+					AllowedBranches: []string{"feature/*", "fix/*"},
+				},
+			},
+			checkContains: []string{
+				"GH_AW_SAFE_OUTPUTS_HANDLER_CONFIG",
+			},
+			checkJSON:    true,
+			expectedKeys: []string{"merge_pull_request"},
+		},
 	}
 
 	for _, tt := range tests {