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/components/interests/interest-form.tsx

@@ -314,7 +314,7 @@ export function InterestForm({ open, onOpenChange, defaultClientId, interest }:
               <p className="text-xs text-muted-foreground">
                 Required before the interest can leave the &quot;Open&quot; stage.
               </p>
-              {/* TODO: also include company-owned yachts where client is a member — requires autocomplete owner=any|company filter */}
+              {/* TODO: also include company-owned yachts where client is a member - requires autocomplete owner=any|company filter */}
               {/* TODO: add "Add new yacht" inline shortcut (requires YachtForm integration) */}
             </div>
           </div>