db2c482ae9
Replace the free-text 2-char country code field on the inline customer create form and the customer detail page with a dropdown that shows localized country names (Intl.DisplayNames, no hardcoded map) while still storing the ISO 3166-1 alpha-2 code. The create form now seeds the default country from the business profile instead of leaving it blank or guessing CH/FL. The free-text countryName override is kept for the rare case where an operator wants a custom display string. Standardize Liechtenstein on the ISO code LI instead of the colloquial plate code FL so it matches the PDF renderer's locale-aware lookup and the new dropdown. Migration 110 normalizes existing FL rows to LI on customer_accounts and business_profile (idempotent, case-insensitive). Require at least one human-readable identifier (company name or a contact name) at create time so the form can't produce a nameless row that's impossible to recognise in lists later. Enforced on both the frontend (isValid + toast) and the backend POST /admin/customers validator so the API can't be bypassed. i18n: en + de updated; other locales fall back to inline English defaults and should get a native review before release.