chore(style): codebase em-dash sweep + minor layout polish

Replaces every em-dash and en-dash with regular ASCII hyphens
across comments, JSX strings, and dev-facing logs. Mostly cosmetic
but stops the inconsistent mix that crept in over the last few
months (some files used em-dashes in comments, others didn't,
some used both).

Bundles two small dashboard-layout tweaks that touch a couple of
already-modified files:
- (dashboard)/layout.tsx main padding goes from p-6 to pt-3 px-6
  pb-6 so page content sits closer to the topbar.
- Sidebar now receives the ports list it needs for the footer
  port switcher.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/companies/company-members-tab.tsx

@@ -56,7 +56,7 @@ const ROLE_LABELS: Record<string, string> = {
 };
 
 function formatDate(value: string | null): string {
-  if (!value) return '—';
+  if (!value) return '-';
   const date = new Date(value);
   if (Number.isNaN(date.getTime())) return value;
   return date.toLocaleDateString();
@@ -201,14 +201,14 @@ export function CompanyMembersTab({ companyId, portSlug }: CompanyMembersTabProp
                     </TableCell>
                     <TableCell>{ROLE_LABELS[m.role] ?? m.role}</TableCell>
                     <TableCell className="text-sm text-muted-foreground max-w-[240px] truncate">
-                      {m.roleDetail ?? '—'}
+                      {m.roleDetail ?? '-'}
                     </TableCell>
                     <TableCell>{formatDate(m.startDate)}</TableCell>
                     <TableCell>
                       {m.endDate ? (
                         formatDate(m.endDate)
                       ) : (
-                        <span className="text-muted-foreground">—</span>
+                        <span className="text-muted-foreground">-</span>
                       )}
                     </TableCell>
                     <TableCell>
@@ -217,7 +217,7 @@ export function CompanyMembersTab({ companyId, portSlug }: CompanyMembersTabProp
                           Primary
                         </Badge>
                       ) : (
-                        <span className="text-muted-foreground">—</span>
+                        <span className="text-muted-foreground">-</span>
                       )}
                     </TableCell>
                     <TableCell>