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/database/tenant-schema.service.ts

@@ -109,6 +109,7 @@ export class TenantSchemaService {
         regular_assessment DECIMAL(10,2) NOT NULL DEFAULT 0.00,
         special_assessment DECIMAL(10,2) DEFAULT 0.00,
         unit_count INTEGER DEFAULT 0,
+        frequency VARCHAR(20) DEFAULT 'monthly' CHECK (frequency IN ('monthly', 'quarterly', 'annual')),
         is_active BOOLEAN DEFAULT TRUE,
         created_at TIMESTAMPTZ DEFAULT NOW(),
         updated_at TIMESTAMPTZ DEFAULT NOW()