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/recommendations.ts

@@ -151,7 +151,7 @@ export async function listRecommendations(interestId: string, portId: string) {
   // Verify the interest belongs to the caller's port. Without this gate,
   // any user with `interests:view` could pass a foreign-port interestId
   // and receive that tenant's recommended berths (mooring numbers,
-  // dimensions, status — operational data they should not see).
+  // dimensions, status - operational data they should not see).
   const interest = await db.query.interests.findFirst({
     where: and(eq(interests.id, interestId), eq(interests.portId, portId)),
   });