feat: add return to service workflow

backend/tests/test_repair_timeline.py

@@ -715,6 +715,11 @@ class RepairTimelineArchitectureTests(unittest.TestCase):
                     "minerops_repair_parts_summary_api",
                 ),
                 ("POST", "/api/repairs", "begin_repair"),
+                (
+                    "POST",
+                    "/api/repairs/{repair_id}/complete",
+                    "complete_repair",
+                ),
                 ("GET", "/api/repairs/{repair_id}", "get_repair"),
                 (
                     "GET",