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/services/berth-recommender.test.ts

@@ -188,12 +188,12 @@ describe('computeHeat', () => {
   });
 });
 
-// ─── W7 snapshot lockfile — locks current tier-ladder boundaries and heat
+// ─── W7 snapshot lockfile - locks current tier-ladder boundaries and heat
 // ordering so weight-tuning changes can't silently shift outputs. The
 // existing toBe / toBeCloseTo tests above cover correctness; these
 // inline snapshots are the regression-catching tripwires.
 
-describe('W7 snapshots — tier-ladder boundaries', () => {
+describe('W7 snapshots - tier-ladder boundaries', () => {
   it.each([
     [0, 0, 0],
     [0, 1, 0],
@@ -217,7 +217,7 @@ describe('W7 snapshots — tier-ladder boundaries', () => {
   );
 });
 
-describe('W7 snapshots — heat at canonical inputs', () => {
+describe('W7 snapshots - heat at canonical inputs', () => {
   const NOW = new Date('2026-05-05T00:00:00Z');
   const w = DEFAULT_RECOMMENDER_SETTINGS;
 
@@ -238,7 +238,7 @@ describe('W7 snapshots — heat at canonical inputs', () => {
       w,
       NOW,
     );
-    // Snapshot the rounded breakdown — exact float math (toBeCloseTo)
+    // Snapshot the rounded breakdown - exact float math (toBeCloseTo)
     // is covered above; this locks the relative ordering + magnitude.
     expect({
       total: Math.round(h.total * 1000) / 1000,