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

src/app/(dashboard)/[portSlug]/admin/email/page.tsx

@@ -5,6 +5,7 @@ import { RegistryDrivenForm } from '@/components/admin/shared/registry-driven-fo
 import { SalesEmailConfigCard } from '@/components/admin/sales-email-config-card';
 import { EmailRoutingCard } from '@/components/admin/email-routing-card';
 import { SmtpTestSendCard } from '@/components/admin/email/smtp-test-send-card';
+import { TestTemplateCard } from '@/components/admin/email/test-template-card';
 
 export default function EmailSettingsPage() {
   return (
@@ -14,7 +15,7 @@ export default function EmailSettingsPage() {
         description="Per-port outgoing email configuration. SMTP credentials and the From address default to environment variables when these fields are blank. Header/footer HTML lives under Branding."
       />
 
-      {/* Explainer for the "two accounts" model — addresses the recurring
+      {/* Explainer for the "two accounts" model - addresses the recurring
           UAT question "why are there separate SMTP credentials for sales
           and noreply?". Keeps the answer in front of the admin before
           they reach the per-card form below. */}
@@ -39,7 +40,7 @@ export default function EmailSettingsPage() {
       </div>
 
       {/* Registry-driven so each field shows the "Using env fallback /
-          port / global / default" badge inline — admins can tell at a
+          port / global / default" badge inline - admins can tell at a
           glance which fields are coming from .env vs. UI overrides. */}
       <RegistryDrivenForm
         sections={['email.from']}
@@ -52,6 +53,7 @@ export default function EmailSettingsPage() {
         description="Optional per-port SMTP credentials for the noreply mailbox. Leave blank to use the global env defaults. Each field shows its current source (env / port / default) so you can tell what's active without checking the deploy."
       />
       <SmtpTestSendCard />
+      <TestTemplateCard />
       <SalesEmailConfigCard />
       <EmailRoutingCard />
     </div>