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/residential.ts

@@ -3,7 +3,7 @@ import { pgTable, text, timestamp, index } from 'drizzle-orm/pg-core';
 import { ports } from './ports';
 
 /**
- * Residential clients — physically separated from `clients` because the
+ * Residential clients - physically separated from `clients` because the
  * residential side is handled by an external team that should never see
  * marina-side data, and vice versa. The two domains share a port but no
  * tables, so the access boundary is enforced at the schema level.
@@ -24,7 +24,7 @@ export const residentialClients = pgTable(
      *  PhoneInput component lands. The free-text `phone` column stays
      *  for one release as a fallback for unparseable rows. */
     phoneE164: text('phone_e164'),
-    /** ISO-3166-1 alpha-2 — country the phone was parsed against. */
+    /** ISO-3166-1 alpha-2 - country the phone was parsed against. */
     phoneCountry: text('phone_country'),
     /** ISO-3166-1 alpha-2 nationality. */
     nationalityIso: text('nationality_iso'),
@@ -55,7 +55,7 @@ export const residentialClients = pgTable(
 );
 
 /**
- * Residential interests — one per inquiry/lead. A residential_client can
+ * Residential interests - one per inquiry/lead. A residential_client can
  * have multiple interests over time (e.g. inquired about a unit in 2025,
  * came back about a different unit in 2026).
  *
@@ -78,7 +78,7 @@ export const residentialInterests = pgTable(
     source: text('source'), // website | manual | referral | broker
     notes: text('notes'),
     /**
-     * Free-text capture of unit-type / size / floor / budget preferences —
+     * Free-text capture of unit-type / size / floor / budget preferences -
      * residential leads are exploratory and the external team uses notes
      * heavily. Schema can grow into structured columns later if needed.
      */