chore(autonomous-session): consolidate uncommitted work from prior session

Bundles the prior autonomous-session output that was sitting unstaged:

- Em-dash sweep across src/ + tests/ (en-dash/em-dash to hyphen, ~2280 instances)
- country-flag-icons rollout (CountryFlag component, replaces emoji glyphs that
  never rendered on Windows; lazy-loads the 3x2 SVG index as a single chunk
  after the per-subpath dynamic-import approach silently failed in webpack)
- Admin IA Phase 1+2: 7-domain regroup, 41 to 38 pages, /admin/berths index,
  redirects (ocr to ai, reports to dashboard, invitations to users),
  docs/admin-ia-proposal.md
- Per-template email tester (registry + endpoint + UI on Email admin page)
- Cancel-document mode picker (delete-from-Documenso vs keep-for-audit)
- Dashboard PDF report: 25 widgets, SVG charts, date-range picker, 11 resolvers
- Customize-widgets per-region sortables at xl+ (charts/rails/feed); single
  flat sortable below xl when the layout stacks; per-viewport saved orders
- Audit doc updates capturing each shipped item
- Lint fixes: react-compiler immutability in DonutChart (reduce instead of
  let-reassign), set-state-in-effect disables in CountryFlag and
  UploadForSigning preview-bytes effect, unused 'confirm' destructures in
  interest contract + reservation tabs, unescaped apostrophe in test-template
  card copy

tests/unit/website-inquiries.test.ts

@@ -1,5 +1,5 @@
 /**
- * /api/public/website-inquiries route — unit tests.
+ * /api/public/website-inquiries route - unit tests.
  *
  * Asserts:
  *   1. Auth: rejects missing/wrong X-Webhook-Secret with 401.
@@ -22,7 +22,7 @@ import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 const VALID_UUID = '11111111-1111-4111-8111-111111111111';
 const SECRET = 'test-secret-at-least-16-chars-long';
 
-// ─── Mock state — module-scoped so test-level mutations are visible ────
+// ─── Mock state - module-scoped so test-level mutations are visible ────
 
 interface MockState {
   portRow: Array<{ id: string }>;
@@ -43,7 +43,7 @@ const state: MockState = {
   queryCount: 0,
 };
 
-// ─── Hoisted mocks — apply for the entire file ────────────────────────
+// ─── Hoisted mocks - apply for the entire file ────────────────────────
 
 vi.mock('@/lib/env', () => ({
   env: { WEBSITE_INTAKE_SECRET: SECRET },
@@ -134,7 +134,7 @@ afterEach(() => {
 
 // ─── Tests ────────────────────────────────────────────────────────────
 
-describe('POST /api/public/website-inquiries — auth + capture', () => {
+describe('POST /api/public/website-inquiries - auth + capture', () => {
   it('returns 401 when the X-Webhook-Secret header is missing', async () => {
     const { POST } = await import('@/app/api/public/website-inquiries/route');
     const res = await POST(makeReq({}));