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/api/public/email-pixel/[sendId]/route.ts

@@ -36,7 +36,7 @@ function gifResponse(): NextResponse {
     headers: {
       'Content-Type': 'image/gif',
       'Content-Length': String(TRANSPARENT_GIF.length),
-      // Tell every upstream cache to keep its hands off — we count opens
+      // Tell every upstream cache to keep its hands off - we count opens
       // on the FETCH itself, so any cached response is a missed open.
       'Cache-Control': 'no-store, no-cache, must-revalidate, private',
       Pragma: 'no-cache',
@@ -62,7 +62,7 @@ export async function GET(
     const userAgent = req.headers.get('user-agent');
     const referer = req.headers.get('referer');
 
-    // Best-effort write — never block the pixel response on a slow DB.
+    // Best-effort write - never block the pixel response on a slow DB.
     // The pixel must return promptly so email clients render normally.
     db.insert(documentSendOpens)
       .values({
@@ -85,7 +85,7 @@ export async function GET(
       });
 
     // Cross-post to Umami so the marketing funnel includes opens. Don't
-    // await — fire-and-forget so the pixel response stays fast.
+    // await - fire-and-forget so the pixel response stays fast.
     trackEvent(
       sendRow.portId,
       'email-opened',