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/q/[slug]/route.ts

@@ -9,9 +9,9 @@ import { trackEvent } from '@/lib/services/umami.service';
 /**
  * GET /q/[slug]
  *
- * Phase 4c — tracked redirect link. Looks up the slug, records the
+ * Phase 4c - tracked redirect link. Looks up the slug, records the
  * click (fire-and-forget so the redirect stays fast), and 302s the
- * recipient to the target URL. Unknown slugs 404 — we deliberately do
+ * recipient to the target URL. Unknown slugs 404 - we deliberately do
  * NOT redirect anonymous traffic to a default home page since that
  * would be an open-redirect risk (although `targetUrl` is admin-stored
  * not user-supplied, this keeps the endpoint surface small).
@@ -25,7 +25,7 @@ export async function GET(
 ): Promise<NextResponse> {
   const { slug } = await ctx.params;
 
-  // Slug format gate — reject obvious noise without hitting the DB.
+  // Slug format gate - reject obvious noise without hitting the DB.
   if (!/^[a-zA-Z0-9_-]{1,64}$/.test(slug)) {
     return new NextResponse('Not found', { status: 404 });
   }