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/components/residential/residential-interest-columns.tsx

@@ -24,7 +24,7 @@ export interface ResidentialInterestRow {
   assignedTo: string | null;
   archivedAt: string | null;
   updatedAt: string;
-  /** Optional client snapshot — server may join the residential client row
+  /** Optional client snapshot - server may join the residential client row
    *  so the table can show the client name in column 1 without a second
    *  fetch per row. */
   clientName?: string | null;
@@ -58,7 +58,7 @@ export function getResidentialInterestColumns({
       header: 'Client',
       cell: ({ row }) => {
         const r = row.original;
-        const name = r.clientName ?? '—';
+        const name = r.clientName ?? '-';
         return (
           <Link
             /* eslint-disable-next-line @typescript-eslint/no-explicit-any */
@@ -89,7 +89,7 @@ export function getResidentialInterestColumns({
       accessorKey: 'source',
       header: 'Source',
       cell: ({ row }) => (
-        <span className="capitalize text-muted-foreground">{row.original.source ?? '—'}</span>
+        <span className="capitalize text-muted-foreground">{row.original.source ?? '-'}</span>
       ),
     },
     {
@@ -99,7 +99,7 @@ export function getResidentialInterestColumns({
       enableSorting: false,
       cell: ({ row }) => (
         <span className="line-clamp-1 max-w-xs text-muted-foreground">
-          {row.original.preferences ?? '—'}
+          {row.original.preferences ?? '-'}
         </span>
       ),
     },
@@ -110,7 +110,7 @@ export function getResidentialInterestColumns({
       enableSorting: false,
       cell: ({ row }) => (
         <span className="line-clamp-1 max-w-xs text-muted-foreground">
-          {row.original.notes ?? '—'}
+          {row.original.notes ?? '-'}
         </span>
       ),
     },