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/(portal)/portal/forgot-password/page.tsx

@@ -18,7 +18,7 @@ export default function PortalForgotPasswordPage() {
     e.preventDefault();
     setLoading(true);
     try {
-      // Always returns 200 — caller never sees whether email exists.
+      // Always returns 200 - caller never sees whether email exists.
       await fetch('/api/portal/auth/forgot-password', {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },