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/clients.service.ts

@@ -54,7 +54,7 @@ export async function listClients(portId: string, query: ListClientsInput) {
     if (matchingIds.length > 0) {
       filters.push(inArray(clients.id, matchingIds));
     } else {
-      // No clients match these tags — return empty
+      // No clients match these tags - return empty
       return { data: [], total: 0 };
     }
   }
@@ -252,7 +252,7 @@ export async function getClientById(id: string, portId: string) {
 
   const portalEnabled = await isPortalEnabledForPort(portId);
 
-  // Counts surfaced for tab badges (Interests + Notes — Yachts/Companies/etc
+  // Counts surfaced for tab badges (Interests + Notes - Yachts/Companies/etc
   // get their counts from the corresponding row arrays we already fetched).
   const [interestCountRow] = await db
     .select({ count: count() })
@@ -577,7 +577,7 @@ export async function addClientAddress(
 
   // The unique partial index requires us to demote any existing primary
   // before inserting a new one. We grab a row lock on the client to
-  // serialize concurrent primary-toggle requests against the same client —
+  // serialize concurrent primary-toggle requests against the same client -
   // without this, two simultaneous "isPrimary=true" inserts can both
   // observe "no existing primary" and one trips the unique index with a
   // 5xx instead of being safely ordered.
@@ -642,7 +642,7 @@ export async function updateClientAddress(
   if (!existing) throw new NotFoundError('Address');
 
   const updated = await withTransaction(async (tx) => {
-    // Lock the client row to serialize primary-toggle changes — see addClientAddress.
+    // Lock the client row to serialize primary-toggle changes - see addClientAddress.
     await tx.select({ id: clients.id }).from(clients).where(eq(clients.id, clientId)).for('update');
 
     if (data.isPrimary === true && !existing.isPrimary) {