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/lib/services/yachts.service.ts

@@ -211,7 +211,7 @@ export async function transferOwnership(
       yacht.currentOwnerType === data.newOwner.type &&
       yacht.currentOwnerId === data.newOwner.id
     ) {
-      throw new ValidationError('same owner — nothing to transfer');
+      throw new ValidationError('same owner - nothing to transfer');
     }
 
     await assertOwnerExists(portId, data.newOwner, tx);