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/lib/validators/interests.ts

@@ -162,7 +162,7 @@ export const publicInterestSchema = z
     // NEW: required structured yacht block. Public submissions after the
     // data-model refactor MUST include yacht data.
     yacht: publicYachtSchema,
-    // NEW: optional company block — creates/upserts a company and adds a
+    // NEW: optional company block - creates/upserts a company and adds a
     // membership linking the submitting client to it.
     company: publicCompanySchema.optional(),
     source: z.literal('website').default('website'),