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/reminders/reminder-form.tsx

@@ -221,7 +221,7 @@ export function ReminderForm({
 
           <div className="space-y-2">
             <Label className="text-muted-foreground text-xs">
-              Link to Entity (optional — paste UUIDs, or leave blank)
+              Link to Entity (optional - paste UUIDs, or leave blank)
             </Label>
             <div className="grid grid-cols-1 gap-2">
               <Input