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/berths/berth-columns.tsx

@@ -56,7 +56,12 @@ function ActionsCell({ row }: { row: { original: BerthRow } }) {
   return (
     <DropdownMenu>
       <DropdownMenuTrigger asChild>
-        <Button variant="ghost" size="icon" className="h-8 w-8" onClick={(e) => e.stopPropagation()}>
+        <Button
+          variant="ghost"
+          size="icon"
+          className="h-8 w-8"
+          onClick={(e) => e.stopPropagation()}
+        >
           <MoreHorizontal className="h-4 w-4" />
           <span className="sr-only">Open menu</span>
         </Button>
@@ -89,14 +94,12 @@ export const berthColumns: ColumnDef<BerthRow, unknown>[] = [
   {
     accessorKey: 'mooringNumber',
     header: 'Mooring #',
-    cell: ({ row }) => (
-      <span className="font-medium">{row.original.mooringNumber}</span>
-    ),
+    cell: ({ row }) => <span className="font-medium">{row.original.mooringNumber}</span>,
   },
   {
     accessorKey: 'area',
     header: 'Area',
-    cell: ({ row }) => row.original.area ?? '—',
+    cell: ({ row }) => row.original.area ?? '-',
   },
   {
     accessorKey: 'status',
@@ -109,7 +112,7 @@ export const berthColumns: ColumnDef<BerthRow, unknown>[] = [
     enableSorting: false,
     cell: ({ row }) => {
       const { lengthM, widthM } = row.original;
-      if (!lengthM && !widthM) return '—';
+      if (!lengthM && !widthM) return '-';
       return `${lengthM ?? '?'}m × ${widthM ?? '?'}m`;
     },
   },
@@ -118,7 +121,7 @@ export const berthColumns: ColumnDef<BerthRow, unknown>[] = [
     header: 'Price',
     cell: ({ row }) => {
       const { price, priceCurrency } = row.original;
-      if (!price) return '—';
+      if (!price) return '-';
       return new Intl.NumberFormat('en-US', {
         style: 'currency',
         currency: priceCurrency || 'USD',
@@ -129,8 +132,7 @@ export const berthColumns: ColumnDef<BerthRow, unknown>[] = [
   {
     accessorKey: 'tenureType',
     header: 'Tenure',
-    cell: ({ row }) =>
-      row.original.tenureType === 'permanent' ? 'Permanent' : 'Fixed Term',
+    cell: ({ row }) => (row.original.tenureType === 'permanent' ? 'Permanent' : 'Fixed Term'),
   },
   {
     id: 'tags',