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/services/webhook-dispatch.ts

@@ -11,7 +11,7 @@ import { INTERNAL_TO_WEBHOOK_MAP } from '@/lib/services/webhook-event-map';
  * queries all active webhooks for the given port that are subscribed to that
  * event, and enqueues a BullMQ delivery job for each one.
  *
- * This function is fire-and-forget — callers should use `void dispatchWebhookEvent(...)`.
+ * This function is fire-and-forget - callers should use `void dispatchWebhookEvent(...)`.
  */
 export async function dispatchWebhookEvent(
   portId: string,
@@ -20,7 +20,7 @@ export async function dispatchWebhookEvent(
 ): Promise<void> {
   const webhookEvent = INTERNAL_TO_WEBHOOK_MAP[internalEvent];
   if (!webhookEvent) {
-    // No mapping for this event — skip silently
+    // No mapping for this event - skip silently
     return;
   }
 
@@ -65,10 +65,7 @@ export async function dispatchWebhookEvent(
       });
     }
   } catch (err) {
-    // Never block callers — log and swallow
-    logger.error(
-      { portId, internalEvent, webhookEvent, err },
-      'Failed to dispatch webhook event',
-    );
+    // Never block callers - log and swallow
+    logger.error({ portId, internalEvent, webhookEvent, err }, 'Failed to dispatch webhook event');
   }
 }