feat(i18n): country/phone/timezone/subdivision primitives + form wiring

Cross-cutting i18n polish for forms across the marina + residential + company
domains. Introduces a single source of truth for country/phone/timezone/
subdivision data and replaces every nationality-as-free-text and timezone-
as-string Input with a dedicated combobox.

PR1  Countries — ALL_COUNTRY_CODES (~250 ISO-3166-1 alpha-2), Intl.DisplayNames
     for localized labels, detectDefaultCountry() with navigator-region
     fallback to US, CountryCombobox with regional-indicator flag glyphs +
     compact mode for inline use.
PR2  Phone — libphonenumber-js wrapper (parsePhone / formatAsYouType /
     callingCodeFor), PhoneInput with flag dropdown + national-format
     AsYouType + paste-detect that flips the country dropdown for pasted
     international strings.
PR3  Timezones — country->IANA map (250 entries, multi-zone for AU/BR/CA/CD/
     ID/KZ/MN/MX/RU/US), formatTimezoneLabel ("Europe/London (UTC+1)"),
     TimezoneCombobox with Suggested/All grouping driven by countryHint.
PR4  Subdivisions — wraps the iso-3166-2 npm package (~5000 ISO 3166-2
     codes for every country), per-country cache, SubdivisionCombobox with
     "Pick a country first" / "No regions available" empty states.
PR5  Schema deltas (migration 0015) — clients.nationality_iso, clientContacts
     {value_e164, value_country}, clientAddresses {country_iso, subdivision_iso},
     residentialClients {phone_e164, phone_country, nationality_iso, timezone,
     place_of_residence_country_iso, subdivision_iso}, companies {incorporation_
     country_iso, incorporation_subdivision_iso}, companyAddresses {country_iso,
     subdivision_iso}. Plus shared zod validators (validators/i18n.ts) used
     by every entity validator + route handler.
PR6  ClientForm + ClientDetail — CountryCombobox replaces nationality Input,
     TimezoneCombobox replaces timezone Input (driven by nationalityIso hint),
     PhoneInput conditionally rendered for phone/whatsapp contacts. Inline
     editors (InlineCountryField / InlineTimezoneField / InlinePhoneField)
     for the detail-page overview rows + ContactsEditor.
PR7  Residential client form + detail — phone -> PhoneInput, nationality/
     timezone/place-of-residence-country/subdivision rows in both create
     sheet and inline-editable detail view. Subdivision wipes when country
     flips since codes are country-scoped.
PR8  Company form + detail — incorporation country -> CountryCombobox,
     incorporation region -> SubdivisionCombobox in both modes.
PR9  Public inquiry endpoint — accepts pre-normalized phoneE164/phoneCountry
     and i18n fields from newer website builds, server-side parsePhone()
     fallback for legacy raw-international submissions. Old Nuxt builds
     keep working unchanged.

Tests: 4 unit suites for the primitives (25 tests), 1 integration spec for
the public phone-normalization path (3 tests), 1 smoke spec asserting the
combobox triggers render in all three create sheets.

Test totals: vitest 713 -> 741 (+28).

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

src/components/shared/inline-country-field.tsx

@@ -0,0 +1,92 @@
+'use client';
+
+import { useState } from 'react';
+import { Loader2, Pencil } from 'lucide-react';
+import { toast } from 'sonner';
+
+import { CountryCombobox } from '@/components/shared/country-combobox';
+import { getCountryName, type CountryCode } from '@/lib/i18n/countries';
+import { cn } from '@/lib/utils';
+
+interface InlineCountryFieldProps {
+  value: string | null | undefined;
+  onSave: (next: CountryCode | null) => Promise<void>;
+  emptyText?: string;
+  disabled?: boolean;
+  className?: string;
+  'data-testid'?: string;
+}
+
+/**
+ * Click-to-edit country picker. Renders the localized country name with a
+ * regional-indicator flag glyph; opens a CountryCombobox on click.
+ */
+export function InlineCountryField({
+  value,
+  onSave,
+  emptyText = '—',
+  disabled,
+  className,
+  'data-testid': testId,
+}: InlineCountryFieldProps) {
+  const [editing, setEditing] = useState(false);
+  const [saving, setSaving] = useState(false);
+
+  async function commit(next: CountryCode | null) {
+    if (next === (value ?? null)) {
+      setEditing(false);
+      return;
+    }
+    setSaving(true);
+    try {
+      await onSave(next);
+      setEditing(false);
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : 'Failed to save');
+    } finally {
+      setSaving(false);
+    }
+  }
+
+  if (editing) {
+    return (
+      <div className={cn('flex items-center gap-1', className)}>
+        <CountryCombobox value={value} onChange={(iso) => void commit(iso)} data-testid={testId} />
+        {saving && <Loader2 className="h-3 w-3 animate-spin text-muted-foreground" />}
+      </div>
+    );
+  }
+
+  const display = value
+    ? `${flagEmoji(value)} ${getCountryName(value, typeof navigator !== 'undefined' ? navigator.language : 'en')}`
+    : null;
+
+  return (
+    <button
+      type="button"
+      disabled={disabled}
+      onClick={() => setEditing(true)}
+      data-testid={testId}
+      className={cn(
+        'group inline-flex items-center gap-1.5 rounded px-1 -mx-1 py-0.5 text-left text-sm',
+        'hover:bg-muted/60 focus-visible:bg-muted/60 focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring',
+        disabled && 'cursor-not-allowed opacity-60 hover:bg-transparent',
+        className,
+      )}
+    >
+      <span className={cn('flex-1', !display && 'text-muted-foreground')}>
+        {display ?? emptyText}
+      </span>
+      {!disabled && (
+        <Pencil className="h-3 w-3 opacity-0 transition-opacity group-hover:opacity-50" />
+      )}
+    </button>
+  );
+}
+
+function flagEmoji(code: string): string {
+  if (code.length !== 2) return '';
+  const A = 0x1f1e6;
+  const a = 'A'.charCodeAt(0);
+  return String.fromCodePoint(A + code.charCodeAt(0) - a, A + code.charCodeAt(1) - a);
+}