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/app/(dashboard)/layout.tsx

@@ -40,7 +40,7 @@ export default async function DashboardLayout({ children }: { children: React.Re
         <PermissionsProvider>
           <SocketProvider>
             <RealtimeToasts />
-            {/* Desktop shell — hidden by CSS on mobile */}
+            {/* Desktop shell - hidden by CSS on mobile */}
             <div data-shell="desktop" className="flex h-screen overflow-hidden bg-background">
               <Sidebar
                 portRoles={portRoles}
@@ -49,6 +49,7 @@ export default async function DashboardLayout({ children }: { children: React.Re
                   name: profile?.displayName ?? session.user.name ?? session.user.email,
                   email: session.user.email,
                 }}
+                ports={ports}
               />
               <div className="flex-1 flex flex-col overflow-hidden min-w-0">
                 <Topbar
@@ -58,11 +59,13 @@ export default async function DashboardLayout({ children }: { children: React.Re
                     email: session.user.email,
                   }}
                 />
-                <main className="flex-1 overflow-y-auto bg-background p-6">{children}</main>
+                <main className="flex-1 overflow-y-auto bg-background pt-3 px-6 pb-6">
+                  {children}
+                </main>
               </div>
             </div>
 
-            {/* Mobile shell — hidden by CSS on desktop */}
+            {/* Mobile shell - hidden by CSS on desktop */}
             <MobileLayout>{children}</MobileLayout>
           </SocketProvider>
         </PermissionsProvider>