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/berths.service.ts

@@ -166,7 +166,7 @@ export async function updateBerth(
 
   if (!changed) return existing;
 
-  // Drizzle numeric columns expect string | null — coerce numbers to strings
+  // Drizzle numeric columns expect string | null - coerce numbers to strings
   const n = (v: number | undefined) => (v !== undefined ? String(v) : undefined);
 
   const [updated] = await db
@@ -404,7 +404,7 @@ export async function updateWaitingList(
 
   // Validate every supplied clientId belongs to portId. Without this
   // check, a port-A admin could insert port-B clientIds into the
-  // waiting list — corrupting reportable data and creating a join
+  // waiting list - corrupting reportable data and creating a join
   // surface that hydrates foreign-tenant client rows.
   if (data.entries.length > 0) {
     const clientIds = [...new Set(data.entries.map((e) => e.clientId))];