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/api/v1/berth-reservations/[id]/route.ts

@@ -3,7 +3,7 @@ import { withAuth, withPermission } from '@/lib/api/helpers';
 import { getHandler, patchHandler, deleteHandler } from './handlers';
 
 export const GET = withAuth(withPermission('reservations', 'view', getHandler));
-// PATCH cannot use `withPermission` wrapper — the required permission depends
+// PATCH cannot use `withPermission` wrapper - the required permission depends
 // on the `action` field in the body. `requirePermission` is called inside the
 // handler after the body is parsed.
 export const PATCH = withAuth(patchHandler);