feat: add implementation plan for order material extraction functionality

- Introduced a comprehensive document detailing the project overview, goals, core functionalities, and technical architecture for the order material extraction feature.
- Defined the product model coding rules and extraction logic for selection conditions.
- Designed class structures for model parsing, condition evaluation, and order material list management.
- Outlined implementation steps, testing plans, and risk assessments for the development process.

VBA/vba_metadata.json

@@ -31,6 +31,12 @@
       "attributes": {},
       "file": "DocumentModules\\Sheet4.cls"
     },
+    "Sheet6.cls": {
+      "name": "Sheet6",
+      "type": "DocumentModules",
+      "attributes": {},
+      "file": "DocumentModules\\Sheet6.cls"
+    },
     "clsCategory.cls": {
       "name": "clsCategory",
       "type": "ClassModules",
@@ -54,12 +60,6 @@
       "type": "ClassModules",
       "attributes": {},
       "file": "ClassModules\\clsBOMManager.cls"
-    },
-    "Sheet6.cls": {
-      "name": "Sheet6",
-      "type": "DocumentModules",
-      "attributes": {},
-      "file": "DocumentModules\\Sheet6.cls"
     }
   }
 }