Fundament: Branding Craftvia

- Farb-Tokens laut Brandbook §11.4 (Lotsenblau, Signalorange, Graphit, Hafengrau,
  Stahlgrau, Zink, Funktionsfarben) in globals.css + src/lib/brand.ts; helles Theme
- Inline-SVG-Logo src/components/brand/craftvia-logo.tsx (horizontal/signet,
  color/mono/reversed, App-Icon-Kachel, optionale Tagline); Certvia-/GEFIM-Logos entfernt
- Favicon/PWA-Icons aus dem Signet erzeugt (scripts/generate-brand-icons.ts),
  site.webmanifest (Craftvia, theme_color #082E5B)
- Inter selbst gehostet (next/font/local, lokale OFL-Datei), Open Sans/Poppins entfernt
- Metadaten, WebAuthn-RP-Name, Mail-/Dokument-CD auf Craftvia umgestellt
- docs/craftvia/BRANDING.md ersetzt docs/BRANDING-CERTVIA.md

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/server/mail/config.ts

@@ -90,7 +90,7 @@ export function resetMailConfigCache(): void {
   cached = null;
 }
 
-/** Absenderzeile `Certvia <no-reply@certvia.de>`. */
+/** Absenderzeile `Craftvia <no-reply@craftvia.de>`. */
 export function mailFrom(config: MailConfig): string {
   return `${config.fromName} <${config.from}>`;
 }