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/queue/workers/ai.ts

@@ -27,7 +27,7 @@ interface DraftResult {
 async function generateEmailDraft(payload: GenerateEmailDraftPayload): Promise<DraftResult> {
   const { interestId, clientId, portId, context, additionalInstructions } = payload;
 
-  // Fetch data by IDs in the worker — never trust PII from the queue payload
+  // Fetch data by IDs in the worker - never trust PII from the queue payload
   const { db } = await import('@/lib/db');
   const { interests } = await import('@/lib/db/schema/interests');
   const { clients } = await import('@/lib/db/schema/clients');
@@ -36,7 +36,7 @@ async function generateEmailDraft(payload: GenerateEmailDraftPayload): Promise<D
   const { emailThreads } = await import('@/lib/db/schema/email');
   const { and, eq, desc } = await import('drizzle-orm');
 
-  // Fetch interest, client, berth — both lookups port-scoped so a
+  // Fetch interest, client, berth - both lookups port-scoped so a
   // crafted job payload cannot exfiltrate foreign-tenant data.
   const [interest, client] = await Promise.all([
     db.query.interests.findFirst({