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/interests/interest-documents-tab.tsx

@@ -36,7 +36,7 @@ export function InterestDocumentsTab({ interestId }: InterestDocumentsTabProps)
   });
 
   const prerequisites = {
-    // Required (EOI Section 2 — top paragraph): name, address, email.
+    // Required (EOI Section 2 - top paragraph): name, address, email.
     hasName: Boolean(interest?.clientName),
     hasEmail: Boolean(interest?.clientPrimaryEmail),
     hasAddress: Boolean(interest?.clientHasAddress),