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/integration/public-interest-trio.test.ts

@@ -29,7 +29,7 @@ function uniqueIp(): string {
   return `${IP_PREFIX}.${Math.floor(ipCounter / 255) % 255}.${ipCounter % 255}`;
 }
 
-describe('POST /api/public/interests — trio creation', () => {
+describe('POST /api/public/interests - trio creation', () => {
   let POST: typeof import('@/app/api/public/interests/route').POST;
 
   beforeAll(async () => {
@@ -212,7 +212,7 @@ describe('POST /api/public/interests — trio creation', () => {
       .where(eq(interests.id, secondBody.data.id));
     expect(secondInterest!.clientId).toBe(originalClientId);
 
-    // A second yacht row was created (not deduped) — each submission is its
+    // A second yacht row was created (not deduped) - each submission is its
     // own inquiry about a possibly-different yacht.
     const clientsMatching = await db.select().from(clients).where(eq(clients.id, originalClientId));
     expect(clientsMatching.length).toBe(1);
@@ -259,7 +259,7 @@ describe('POST /api/public/interests — trio creation', () => {
       .where(eq(yachts.id, firstInterest!.yachtId!));
     const originalCompanyId = firstYacht!.currentOwnerId;
 
-    // Second submission — same company name, different casing, different client
+    // Second submission - same company name, different casing, different client
     const secondReq = makeMockRequest(
       'POST',
       `http://localhost/api/public/interests?portId=${port.id}`,