cache refactor

README.md

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+# Commuter Allowance VBA Project
+
+Excel VBA commuter allowance calculation tool.
+
+## Structure
+
+```
+vba/
+├── 通勤手当テンプレート_案.xlsm    # Main workbook
+├── data/                          # CSV data files
+│   ├── 222交通機関名区分.csv       # Transport type (222)
+│   ├── 223通勤_決定事項区分.csv   # Decision factors (223)
+│   ├── 224通勤_手当月額の決定区分.csv  # Monthly amount (224)
+│   ├── 507発信者.csv             # Sender (507)
+│   ├── 区間.csv                   # Route (section)
+│   └── 区間詳細.csv               # Route details
+└── src/
+    ├── module/                    # Common modules
+    │   ├── Common_Button.bas      (306 lines)
+    │   ├── Common_File_Utils.bas  (347 lines)
+    │   ├── Common_Functions.bas   (478 lines)
+    │   ├── Common_Global_Cache.bas (817 lines)
+    │   └── Common_Selector.bas    (161 lines)
+    ├── init_module/               # Init modules
+    │   ├── Import_modules.bas
+    │   └── Test_Cache.bas
+    └── sheet/                     # Sheet classes
+        ├── C1.cls  (842 lines)    - Tukin_C1: Commuter allowance editing
+        ├── M1.cls (164 lines)     - Master_Kukan: Route master (import/export/validate)
+        ├── M2.cls (386 lines)    - Master_Kukan_detail: Route detail master
+        ├── O1.cls (5 lines)       - Master_address: Address master
+        ├── O2.cls (6 lines)      - Master_507: Sender master (507)
+        ├── T1.cls (57 lines)      - Master_244: Route master (244)
+        ├── T2.cls (117 lines)    - Master_245: Route master (245)
+        ├── T3.cls (77 lines)      - Master_246
+        ├── Z1.cls (67 lines)      - Master_222: Transport type master
+        ├── Z2.cls (57 lines)     - Master_223: Decision factors master
+        ├── Z3.cls (60 lines)     - Master_224: Monthly amount master
+        └── Z4.cls (64 lines)     - Master_225
+```
+
+## Sheet Class Prefix
+
+| Prefix | Description |
+|--------|-------------|
+| C      | Commuter allowance editing |
+| M      | Menu / Route master |
+| O      | Other masters |
+| T      | Route (通勤区間) |
+| Z      | Master data configuration |
+
+## License
+
+MIT