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/activate/page.tsx

@@ -14,7 +14,7 @@ export default function PortalActivatePage() {
       <PasswordSetForm
         endpoint="/api/portal/auth/activate"
         title="Activate your account"
-        description="Welcome — choose a password to finish setting up your client portal account."
+        description="Welcome - choose a password to finish setting up your client portal account."
         successTitle="Account activated"
         successDescription="You can now sign in with your new password."
         submitLabel="Activate account"