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/layout/breadcrumbs.tsx

@@ -35,7 +35,7 @@ const SEGMENT_LABELS: Record<string, string> = {
   profile: 'Profile',
 };
 
-// UUID v4-ish (or any 36-char hex+dash) — used to skip entity-id segments
+// UUID v4-ish (or any 36-char hex+dash) - used to skip entity-id segments
 // from the breadcrumbs since the page H1 already shows the entity name.
 const UUID_RE = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
 
@@ -56,7 +56,7 @@ export function Breadcrumbs() {
   // Split pathname and filter empty segments
   const rawSegments = pathname.split('/').filter(Boolean);
 
-  // Remove the portSlug segment and any UUID-ish entity-id segments — the
+  // Remove the portSlug segment and any UUID-ish entity-id segments - the
   // page H1 already shows the entity name, no need to leak the raw id.
   const segments = (
     currentPortSlug ? rawSegments.filter((seg) => seg !== currentPortSlug) : rawSegments