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/shared/branded-auth-shell.tsx

@@ -3,7 +3,7 @@ const LOGO_URL =
   'https://s3.portnimara.com/images/Port%20Nimara%20New%20Logo-Circular%20Frame_250px.png';
 
 /**
- * Branded shell shared by every auth/form surface — CRM login, portal login,
+ * Branded shell shared by every auth/form surface - CRM login, portal login,
  * password set/reset/activate, forgot-password. Renders the blurred Port
  * Nimara overhead background, the circular logo, and a centered white card
  * that consumers populate with their own form/content.
@@ -12,7 +12,7 @@ export function BrandedAuthShell({ children }: { children: React.ReactNode }) {
   return (
     <div className="relative min-h-screen min-h-[100dvh] flex items-center justify-center px-4 py-8">
       {/*
-        Full-viewport background layer — pinned to the visible viewport via
+        Full-viewport background layer - pinned to the visible viewport via
         `fixed inset-0` so the marina image always reaches the actual screen
         edges regardless of the iOS Safari URL bar showing/hiding. The shell's
         layout layer above sits on top via z-index.