Implement Phase 2 features: roles, assessment groups, budget import, Kanban

- Add hierarchical roles: SuperUser Admin (is_superadmin flag), Tenant Admin,
  Tenant User with separate /admin route and admin panel
- Add Assessment Groups module for property type-based assessment rates
  (SFHs, Condos, Estate Lots with different regular/special rates)
- Enhance Chart of Accounts: initial balance on create (with journal entry),
  archive/restore accounts, edit all fields including account number & fund type
- Add Budget CSV import with downloadable template and account mapping
- Add Capital Projects Kanban board with drag-and-drop between year columns,
  table/kanban view toggle, and PDF export via browser print
- Update seed data with assessment groups, second test user, superadmin flag
- Create repeatable reseed.sh script for clean database population
- Fix AgingReportPage Mantine v7 Table prop compatibility

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/src/modules/accounts/accounts.controller.ts

@@ -16,8 +16,8 @@ export class AccountsController {
 
   @Get()
   @ApiOperation({ summary: 'List all accounts' })
-  findAll(@Query('fundType') fundType?: string) {
-    return this.accountsService.findAll(fundType);
+  findAll(@Query('fundType') fundType?: string, @Query('includeArchived') includeArchived?: string) {
+    return this.accountsService.findAll(fundType, includeArchived === 'true');
   }
 
   @Get('trial-balance')