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/audit-search.service.ts

@@ -1,5 +1,5 @@
 /**
- * Audit log search — PR1 skeleton. PR10 fills in the cursor pagination
+ * Audit log search - PR1 skeleton. PR10 fills in the cursor pagination
  * and per-port + super-admin scoping; v1 already has the GIN index on
  * `audit_logs.search_text`.
  */
@@ -12,7 +12,7 @@ import { auditLogs, type AuditLog } from '@/lib/db/schema/system';
 export interface AuditSearchOptions {
   /** Limit results to a single port. Omit for super-admin all-ports view. */
   portId?: string;
-  /** Free-text query — runs against the GIN-indexed search_text column. */
+  /** Free-text query - runs against the GIN-indexed search_text column. */
   q?: string;
   /** Filter by actor (user id). */
   userId?: string;
@@ -25,7 +25,7 @@ export interface AuditSearchOptions {
   /** Inclusive date range. */
   from?: Date;
   to?: Date;
-  /** Pagination — cursor on (createdAt, id). */
+  /** Pagination - cursor on (createdAt, id). */
   cursor?: { createdAt: Date; id: string };
   limit?: number;
 }