diff --git a/.woodpecker/detect-duplicates.py b/.woodpecker/detect-duplicates.py
index 1d2c195..4509b14 100644
--- a/.woodpecker/detect-duplicates.py
+++ b/.woodpecker/detect-duplicates.py
@@ -302,6 +302,9 @@ def main() -> int:
         "f08a7139db9c96cd3526549c499c0332": "install_project_crons function in entrypoints (window f08a7139)",
         "f0917809bdf28ff93fff0749e7e7fea0": "install_project_crons function in entrypoints (window f0917809)",
         "f0e4101f9b90c2fa921e088057a96db7": "install_project_crons function in entrypoints (window f0e4101f)",
+        # Structural end-of-while-loop+case pattern: `return 1 ;; esac done }`
+        # Appears in stack_lock_acquire (lib/stack-lock.sh) and lib/pr-lifecycle.sh
+        "29d4f34b703f44699237713cc8d8065b": "Structural end-of-while-loop+case (return 1, esac, done, closing brace)",
     }
 
     if not sh_files: