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/app/(dashboard)/[portSlug]/admin/email/page.tsx

@@ -34,7 +34,7 @@ const FIELDS: SettingFieldDef[] = [
     label: 'Default signature (HTML)',
     description: 'Appended to the bottom of system-generated emails.',
     type: 'html',
-    placeholder: '<p>—<br>The Port Nimara team</p>',
+    placeholder: '<p>-<br>The Port Nimara team</p>',
     defaultValue: '',
   },
   {
@@ -71,7 +71,7 @@ const FIELDS: SettingFieldDef[] = [
   {
     key: 'smtp_pass_override',
     label: 'SMTP password override',
-    description: 'Optional. Stored in plain text — only set when overriding env credentials.',
+    description: 'Optional. Stored in plain text - only set when overriding env credentials.',
     type: 'password',
     defaultValue: '',
   },

src/app/(dashboard)/[portSlug]/clients/[clientId]/loading.tsx

@@ -4,13 +4,13 @@ import { CardSkeleton } from '@/components/shared/loading-skeleton';
 /**
  * Route-level loading UI for the client detail page. Renders while the
  * server component resolves the session and the client component bootstraps
- * its initial query — replaces the previous empty-header flash on direct
+ * its initial query - replaces the previous empty-header flash on direct
  * URL visits.
  */
 export default function Loading() {
   return (
     <div className="space-y-6">
-      {/* Header strip — title, badges, action buttons */}
+      {/* Header strip - title, badges, action buttons */}
       <div className="rounded-xl border border-border bg-card px-5 py-4 shadow-sm space-y-3">
         <div className="flex items-center gap-3">
           <Skeleton className="h-7 w-56" />

src/app/(dashboard)/[portSlug]/invoices/new/page.tsx

@@ -59,7 +59,7 @@ export default function NewInvoicePage() {
   }, [setChrome]);
 
   // When the form is launched from an interest detail with `?interestId=…&kind=deposit`,
-  // fetch enough of the interest to display "Deposit for {client} — Berth {n}" in
+  // fetch enough of the interest to display "Deposit for {client} - Berth {n}" in
   // the review step. Doubles as the source of truth for the billing entity prefill.
   const { data: prefilledInterest } = useQuery<{
     data: {
@@ -184,7 +184,7 @@ export default function NewInvoicePage() {
 
   return (
     <div className="max-w-2xl mx-auto space-y-6">
-      {/* Header — desktop only; mobile gets the title from the topbar */}
+      {/* Header - desktop only; mobile gets the title from the topbar */}
       <div className="hidden sm:flex items-center gap-3">
         <Button variant="ghost" size="sm" onClick={() => router.push(`/${portSlug}/invoices`)}>
           <ChevronLeft className="h-4 w-4" />
@@ -233,7 +233,7 @@ export default function NewInvoicePage() {
                         {prefilledInterest?.data
                           ? `Linked to ${prefilledInterest.data.clientName ?? 'interest'}${
                               prefilledInterest.data.berthMooringNumber
-                                ? ` — Berth ${prefilledInterest.data.berthMooringNumber}`
+                                ? ` - Berth ${prefilledInterest.data.berthMooringNumber}`
                                 : ''
                             }. Marking this invoice as paid will advance the interest to "Deposit 10%".`
                           : 'Marking this invoice as paid will advance the linked interest to "Deposit 10%".'}