feat: add unification handler and inheritance system

- Implemented `unificationHandler.ts` to manage nation unification logic, including inheritance point calculations and logging.
- Created `InheritView.vue` for frontend management of inheritance points, buffs, and logs.
- Added database migration for new inheritance tables: `inheritance_point`, `inheritance_log`, `inheritance_result`, and `inheritance_user_state`.
- Developed inheritance buff logic in `inheritBuff.ts` to apply buffs during domestic and war actions.

app/game-api/src/battleSim/processor.ts

@@ -12,6 +12,7 @@ import {
     createItemModuleRegistry,
     ITEM_KEYS,
     loadItemModules,
+    createInheritBuffModules,
     type City,
     type General,
     type Nation,
@@ -27,9 +28,11 @@ import { convertLog } from './logFormatter.js';
 
 const DEFAULT_GENERAL_AGE = 20;
 
-const itemWarModules: WarActionModule[] = createItemActionModules(
-    createItemModuleRegistry(await loadItemModules([...ITEM_KEYS]))
-).war;
+const inheritBuffModules = createInheritBuffModules();
+const itemWarModules: WarActionModule[] = [
+    ...createItemActionModules(createItemModuleRegistry(await loadItemModules([...ITEM_KEYS]))).war,
+    inheritBuffModules.war,
+];
 
 const normalizeItemCode = (value: string | null): string | null => (value === 'None' ? null : value);