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/ai-budget.test.ts

@@ -160,7 +160,7 @@ describe('ai-budget service', () => {
   it('periodStart honors day/week/month boundaries (UTC)', () => {
     const wed = new Date(Date.UTC(2026, 3, 29, 14, 30)); // Wed 2026-04-29 14:30 UTC
     expect(periodStart('day', wed).toISOString()).toBe('2026-04-29T00:00:00.000Z');
-    // 2026-04-27 was a Monday — week starts there.
+    // 2026-04-27 was a Monday - week starts there.
     expect(periodStart('week', wed).toISOString()).toBe('2026-04-27T00:00:00.000Z');
     expect(periodStart('month', wed).toISOString()).toBe('2026-04-01T00:00:00.000Z');
   });