通勤認定エクセルツール対応12 M1 対応

AGENTS.md

@@ -17,11 +17,13 @@
 ### Mandatory Rules
 - ✅ Every module must start with `Option Explicit`
 - ✅ All Public procedures must have a comment header (description, params, return value, author, date)
-- ✅ `On Error Resume Next` is forbidden as global error handling. Only allowed in small scopes paired with `On Error GoTo 0`
+- ✅ `On Error Resume Next` is completely forbidden. Missing sheet/object should raise error directly via `Err.Raise ERR_SHEET_MISSING`. Do not suppress errors when checking if a sheet/worksheet/object exists.
 - ✅ Object variables must be explicitly `Set obj = Nothing` in `Finally` block or at end of procedure
 - ✅ Long operations must disable `ScreenUpdating`, `Calculation`, `EnableEvents` and restore on exit
+- ✅ Comments must be in **English only**. No Chinese, Japanese, or Korean characters allowed in any code comments or inline documentation
 - ❌ Forbidden: `Select` / `Selection` / `ActiveCell`. Always reference Range/Worksheet objects directly
 - ❌ Forbidden: hardcoded file paths or connection strings. Use config sheet or constants module
+- ❌ Forbidden: non-English comments (Chinese / Japanese / Korean)
 
 ## Project Structure