feat(dashboard): local-time greeting + timezone-drift banner

Greeting
- The "Good morning / afternoon / evening, Matt" line now derives from the
  browser's local time, computed inside a useEffect so the rendered HTML
  can't lock to the server's clock during hydration. Until the effect
  fires, the header reads "Welcome" — a neutral phrase that's correct at
  every hour and never produces a hydration warning. The phrase re-evaluates
  hourly so a rep leaving the dashboard open across a boundary (5am, noon,
  6pm) doesn't keep stale text on screen.

Timezone-drift banner
- New <TimezoneDriftBanner> on the dashboard surfaces when the browser's
  resolved timezone (Intl.DateTimeFormat().resolvedOptions().timeZone, which
  follows the OS — and the OS usually follows physical location) doesn't
  match the user's stored CRM preference. The rep gets a one-tap "Update to
  Tokyo" button and a dismiss × that's sticky per browser via localStorage.
- Why a banner rather than auto-update: the stored timezone drives reminder
  firing time, daily-digest delivery, and due-date rendering. Silently
  pinning it to a transient travel location would shift their reminder
  schedule underfoot. The banner gives them control.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/documents/eoi-generate-dialog.tsx

@@ -145,8 +145,7 @@ export function EoiGenerateDialog({
           value: ctx.client.fullName,
           present: !!ctx.client.fullName,
           edit: {
-            onSave: async (next: string | null) =>
-              await patchClient({ fullName: next ?? '' }),
+            onSave: async (next: string | null) => await patchClient({ fullName: next ?? '' }),
             placeholder: 'Full legal name',
           },
         },
@@ -194,8 +193,7 @@ export function EoiGenerateDialog({
           value: ctx.yacht?.name ?? null,
           edit: ctx.yacht
             ? {
-                onSave: async (next: string | null) =>
-                  await patchYacht({ name: next ?? '' }),
+                onSave: async (next: string | null) => await patchYacht({ name: next ?? '' }),
                 placeholder: 'Yacht name',
               }
             : undefined,
@@ -323,12 +321,7 @@ export function EoiGenerateDialog({
                 </p>
                 <dl className="space-y-1.5">
                   {optional.map((row) => (
-                    <PreviewRow
-                      key={row.key}
-                      label={row.label}
-                      value={row.value}
-                      edit={row.edit}
-                    />
+                    <PreviewRow key={row.key} label={row.label} value={row.value} edit={row.edit} />
                   ))}
                 </dl>
               </div>
@@ -477,9 +470,7 @@ function PreviewRow({
           )
         ) : (
           <>
-            <span className="flex-1">
-              {value ?? (missing ? 'Missing — required' : 'Not set')}
-            </span>
+            <span className="flex-1">{value ?? (missing ? 'Missing — required' : 'Not set')}</span>
             {edit ? (
               <button
                 type="button"