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/db/schema/gdpr.ts

@@ -31,7 +31,7 @@ export const gdprExports = pgTable(
       .references(() => user.id, { onDelete: 'restrict' }),
     /** 'pending' | 'building' | 'ready' | 'sent' | 'failed' */
     status: text('status').notNull().default('pending'),
-    /** MinIO path under the configured bucket — null until the worker uploads. */
+    /** MinIO path under the configured bucket - null until the worker uploads. */
     storageKey: text('storage_key'),
     sizeBytes: integer('size_bytes'),
     /** When status='failed', the truncated error message. */
@@ -41,7 +41,7 @@ export const gdprExports = pgTable(
     createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
     readyAt: timestamp('ready_at', { withTimezone: true }),
     sentAt: timestamp('sent_at', { withTimezone: true }),
-    /** Cleanup target — bundles are removed from MinIO after this. */
+    /** Cleanup target - bundles are removed from MinIO after this. */
     expiresAt: timestamp('expires_at', { withTimezone: true }),
   },
   (table) => [