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/email-draft.service.ts

@@ -29,7 +29,7 @@ export interface DraftResult {
  * Request an AI-generated email draft.
  *
  * Generates an opaque random jobId rather than relying on BullMQ's default
- * sequential ids — the jobId is the access token for polling, so it must
+ * sequential ids - the jobId is the access token for polling, so it must
  * not be enumerable. The job payload also captures the requesting user
  * + port so the poll endpoint can refuse cross-tenant / cross-user reads.
  *
@@ -59,7 +59,7 @@ export async function requestEmailDraft(
   await aiQueue.add(
     'generate-email-draft',
     {
-      // No PII — only IDs and context parameters
+      // No PII - only IDs and context parameters
       interestId: request.interestId,
       clientId: request.clientId,
       portId: request.portId,