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/validators/custom-fields.ts

@@ -13,18 +13,12 @@ export const createFieldSchema = z
       .regex(/^[a-z_][a-z0-9_]*$/, 'Must be snake_case'),
     fieldLabel: z.string().min(1).max(100),
     fieldType: z.enum(CUSTOM_FIELD_TYPES),
-    selectOptions: z
-      .array(z.string().min(1).max(100))
-      .min(1)
-      .max(50)
-      .optional(),
+    selectOptions: z.array(z.string().min(1).max(100)).min(1).max(50).optional(),
     isRequired: z.boolean().default(false),
     sortOrder: z.number().int().min(0).default(0),
   })
   .refine(
-    (data) =>
-      data.fieldType !== 'select' ||
-      (data.selectOptions && data.selectOptions.length > 0),
+    (data) => data.fieldType !== 'select' || (data.selectOptions && data.selectOptions.length > 0),
     {
       message: 'Select fields must have at least one option',
       path: ['selectOptions'],
@@ -36,7 +30,7 @@ export const updateFieldSchema = z.object({
   selectOptions: z.array(z.string().min(1).max(100)).optional(),
   isRequired: z.boolean().optional(),
   sortOrder: z.number().int().min(0).optional(),
-  // fieldType intentionally omitted — cannot be changed after creation
+  // fieldType intentionally omitted - cannot be changed after creation
 });
 
 export const setValuesSchema = z.object({