07c70c86f5
Mirrors the Payload backend's new company-settings.legalForm field: when present, registerCourt/registerNumber/managingDirector now appear in the email footer (buildLegalFooterLines) and both invoice PDF footers, matching §37a HGB / §35a GmbHG requirements for registered legal forms. A sole proprietorship (the default) renders identically to before — these fields are only appended when actually set. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>