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/webhooks/documenso/route.ts

@@ -75,7 +75,7 @@ export async function POST(req: NextRequest): Promise<NextResponse> {
     });
 
     if (existing) {
-      logger.info({ signatureHash }, 'Duplicate Documenso webhook — skipping');
+      logger.info({ signatureHash }, 'Duplicate Documenso webhook - skipping');
       return NextResponse.json({ ok: true }, { status: 200 });
     }
   } catch (err) {