Add Komoot import with public (bio verification) and authenticated modes

Two-mode import: public mode verifies Komoot account ownership by checking
that the user's trails.cool profile URL appears in their Komoot bio — no
credentials stored. Authenticated mode uses email + password (AES-256-GCM
encrypted) to import private tours as well.

Includes unit tests for crypto/komoot client and E2E tests for the full
connect + import flow.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/i18n/src/locales/de.ts

@@ -418,6 +418,32 @@ export default {
         },
       },
     },
+    komoot: {
+      title: "Komoot",
+      publicMode: "Nur öffentliche Touren",
+      authenticatedMode: "Alle Touren",
+      publicSection: "Verbinden mit Komoot-Bio-Verifizierung",
+      publicInstructions:
+        'Füge deinen trails.cool-Profillink in dein Komoot-Profil ("Über dich") ein und klicke auf Bestätigen.',
+      profileUrlLabel: "Komoot-Profil-URL oder Nutzer-ID",
+      profileUrlPlaceholder: "https://www.komoot.com/user/...",
+      verifyButton: "Bestätigen",
+      verifying: "Wird überprüft…",
+      verifyPending:
+        "Es kann einige Minuten dauern, bis Änderungen an deinem Komoot-Profil sichtbar sind.",
+      verifySuccess: "Komoot-Konto im öffentlichen Modus verbunden.",
+      verificationError:
+        "Eigentümerschaft konnte nicht bestätigt werden. Stelle sicher, dass dein trails.cool-Profillink in deinem Komoot-Profil steht, und versuche es in ein paar Minuten erneut.",
+      invalidUrl: "Bitte gib eine gültige Komoot-Profil-URL oder Nutzer-ID ein.",
+      authenticatedSection: "Mit E-Mail & Passwort verbinden",
+      emailLabel: "Komoot-E-Mail",
+      passwordLabel: "Komoot-Passwort",
+      connectButton: "Verbinden",
+      connecting: "Verbinde…",
+      connectSuccess: "Komoot-Konto verbunden.",
+      authError: "Ungültige Komoot-Zugangsdaten. Bitte E-Mail und Passwort prüfen.",
+      modeBadge: "Modus: {{mode}}",
+    },
     sync: {
       import: "Importieren",
       importFrom: "Import von {{provider}}",

packages/i18n/src/locales/en.ts

@@ -418,6 +418,32 @@ export default {
         },
       },
     },
+    komoot: {
+      title: "Komoot",
+      publicMode: "Public tours only",
+      authenticatedMode: "All tours",
+      publicSection: "Connect with Komoot bio verification",
+      publicInstructions:
+        'Add your trails.cool profile link to your Komoot bio ("Über dich"), then click Verify.',
+      profileUrlLabel: "Komoot profile URL or user ID",
+      profileUrlPlaceholder: "https://www.komoot.com/user/...",
+      verifyButton: "Verify",
+      verifying: "Verifying…",
+      verifyPending:
+        "Allow a few minutes for changes to your Komoot bio to propagate before verifying.",
+      verifySuccess: "Komoot account connected in public mode.",
+      verificationError:
+        "Could not verify ownership. Make sure your trails.cool profile link is in your Komoot bio and try again in a few minutes.",
+      invalidUrl: "Please enter a valid Komoot profile URL or user ID.",
+      authenticatedSection: "Connect with email & password",
+      emailLabel: "Komoot email",
+      passwordLabel: "Komoot password",
+      connectButton: "Connect",
+      connecting: "Connecting…",
+      connectSuccess: "Komoot account connected.",
+      authError: "Invalid Komoot credentials. Please check your email and password.",
+      modeBadge: "Mode: {{mode}}",
+    },
     sync: {
       import: "Import",
       importFrom: "Import from {{provider}}",