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>

frontend/src/vite-env.d.ts

@@ -0,0 +1,6 @@
+/// <reference types="vite/client" />
+
+declare module '*.svg' {
+  const src: string;
+  export default src;
+}