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/format-date.test.ts

@@ -6,10 +6,10 @@ describe('formatDate', () => {
   const REF = '2026-05-12T14:30:45.000Z';
 
   it('returns fallback for null/undefined/invalid', () => {
-    expect(formatDate(null)).toBe('—');
-    expect(formatDate(undefined)).toBe('—');
-    expect(formatDate('not a date')).toBe('—');
-    expect(formatDate(NaN)).toBe('—');
+    expect(formatDate(null)).toBe('-');
+    expect(formatDate(undefined)).toBe('-');
+    expect(formatDate('not a date')).toBe('-');
+    expect(formatDate(NaN)).toBe('-');
     expect(formatDate(null, 'date.medium', { fallback: 'N/A' })).toBe('N/A');
   });
 
@@ -35,7 +35,7 @@ describe('formatDate', () => {
     expect(out.toLowerCase()).toContain('may');
   });
 
-  it('respects timezone — datetime.short in different zones', () => {
+  it('respects timezone - datetime.short in different zones', () => {
     const ny = formatDate(REF, 'datetime.short', { tz: 'America/New_York' });
     const utc = formatDate(REF, 'datetime.short', { tz: 'UTC' });
     expect(ny).not.toBe(utc);
@@ -55,7 +55,7 @@ describe('formatDate', () => {
 
 describe('formatDateRange', () => {
   it('handles missing start/end', () => {
-    expect(formatDateRange(null, null)).toBe('—');
+    expect(formatDateRange(null, null)).toBe('-');
     expect(formatDateRange('2026-05-12', null)).toMatch(/→$/);
     expect(formatDateRange(null, '2026-05-12')).toMatch(/^→/);
   });
@@ -107,6 +107,6 @@ describe('formatRelative', () => {
   });
 
   it('returns fallback for invalid input', () => {
-    expect(formatRelative(null)).toBe('—');
+    expect(formatRelative(null)).toBe('-');
   });
 });