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>

apps/journal/app/routes/api.sync.komoot.connect.ts

@@ -0,0 +1,48 @@
+// POST /api/sync/komoot/connect
+// Validates Komoot email/password credentials and stores them encrypted.
+
+import { data, redirect } from "react-router";
+import type { Route } from "./+types/api.sync.komoot.connect";
+import { getSessionUser } from "~/lib/auth/session.server";
+import { loginKomoot } from "~/lib/komoot.server";
+import { encrypt } from "~/lib/crypto.server";
+import { link } from "~/lib/connected-services/manager";
+
+export async function action({ request }: Route.ActionArgs) {
+  const user = await getSessionUser(request);
+  if (!user) return redirect("/auth/login");
+
+  const body = (await request.json()) as { email?: string; password?: string };
+  const email = body.email?.trim() ?? "";
+  const password = body.password ?? "";
+
+  if (!email || !password) {
+    return data({ error: "missing_fields" }, { status: 400 });
+  }
+
+  let username: string;
+  try {
+    const result = await loginKomoot(email, password);
+    username = result.username;
+  } catch {
+    return data({ error: "invalid_credentials" }, { status: 401 });
+  }
+
+  const encryptedPassword = encrypt(password);
+
+  await link({
+    userId: user.id,
+    provider: "komoot",
+    credentialKind: "web-login",
+    credentials: {
+      mode: "authenticated",
+      email,
+      encryptedPassword,
+      komootUserId: username,
+    },
+    providerUserId: username,
+    grantedScopes: [],
+  });
+
+  return data({ success: true });
+}