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/(portal)/portal/interests/page.tsx

@@ -57,7 +57,7 @@ export default async function PortalInterestsPage() {
                       <span className="font-medium text-gray-900">General Interest</span>
                     )}
                     {interest.berthArea && (
-                      <span className="text-sm text-gray-400">— {interest.berthArea}</span>
+                      <span className="text-sm text-gray-400">- {interest.berthArea}</span>
                     )}
                   </div>
                   {interest.leadCategory && (