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/api/v1/admin/invitations/route.ts

@@ -9,7 +9,7 @@ import { createCrmInvite, listCrmInvites } from '@/lib/services/crm-invite.servi
 export const GET = withAuth(
   withPermission('admin', 'manage_users', async (_req, ctx) => {
     try {
-      // crm_user_invites is a global table (no per-port column) — invites
+      // crm_user_invites is a global table (no per-port column) - invites
       // mint better-auth users that may later be assigned roles in any
       // port. Listing it cross-tenant would let a port-A director
       // enumerate pending invitee emails, names, and isSuperAdmin flags