Phase 2 tweaks: admin tenant creation, unit delete, frequency, UI overhaul

- Admin panel: create tenants with org + first user, manage org status
  (active/suspended/archived), contract number and plan level fields
- Units: delete with invoice check, assessment group dropdown binding
- Assessment groups: frequency field (monthly/quarterly/annual) with
  income calculations normalized to monthly equivalents
- Sidebar: grouped nav sections (Financials, Assessments, Transactions,
  Planning, Reports, Admin), renamed Chart of Accounts to Accounts
- Header: replaced text with SVG logo
- Capital projects: Kanban as default view, table-only PDF export,
  Future category (beyond 5-year plan)
- Auth: block login for suspended/archived organizations

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

backend/src/modules/units/units.controller.ts

@@ -1,4 +1,4 @@
-import { Controller, Get, Post, Put, Body, Param, UseGuards } from '@nestjs/common';
+import { Controller, Get, Post, Put, Delete, Body, Param, UseGuards } from '@nestjs/common';
 import { ApiTags, ApiBearerAuth } from '@nestjs/swagger';
 import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';
 import { UnitsService } from './units.service';
@@ -21,4 +21,7 @@ export class UnitsController {
 
   @Put(':id')
   update(@Param('id') id: string, @Body() dto: any) { return this.unitsService.update(id, dto); }
+
+  @Delete(':id')
+  delete(@Param('id') id: string) { return this.unitsService.delete(id); }
 }