Initial upload of BB-Apartment 2026 website.

Adds the complete Next.js website including i18n routing, house and
apartment pages, Beds24 v2 integration for live availability/pricing,
Stripe checkout, contact forms, Docker setup and deployment docs.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

app/api/availability/route.ts

@@ -0,0 +1,103 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getAvailability, getEffectiveMinStay } from "@/src/lib/beds24";
+import { calculatePrice } from "@/src/lib/pricing";
+import { getApartmentBySlug, bookingConfig } from "@/src/config/apartments";
+import { nightsBetween, addDays } from "@/src/lib/date";
+
+export const dynamic = "force-dynamic";
+
+export async function GET(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const apartmentSlug = searchParams.get("apartmentSlug");
+    const start = searchParams.get("start");
+    const end = searchParams.get("end");
+
+    if (!apartmentSlug || !start || !end) {
+      return NextResponse.json(
+        { error: "Missing required parameters: apartmentSlug, start, end" },
+        { status: 400 }
+      );
+    }
+
+    const apartment = getApartmentBySlug(apartmentSlug);
+    if (!apartment) {
+      return NextResponse.json(
+        { error: "Apartment not found" },
+        { status: 404 }
+      );
+    }
+
+    const nights = nightsBetween(start, end);
+
+    if (nights <= 0) {
+      return NextResponse.json(
+        { error: "End date must be after start date" },
+        { status: 400 }
+      );
+    }
+
+    const minStayNights = await getEffectiveMinStay(
+      apartment.houseId,
+      apartment.beds24PropertyId,
+      apartment.beds24RoomId,
+      start,
+      bookingConfig.minStayNights
+    );
+    const minStayValid = nights >= minStayNights;
+
+    const availability = await getAvailability({
+      houseId: apartment.houseId,
+      propertyId: apartment.beds24PropertyId,
+      roomId: apartment.beds24RoomId,
+      start,
+      end,
+    });
+
+    // Fetch Beds24's own short-stay rate for the same arrival date, purely to
+    // display a genuine "savings vs. short-term rate" figure — this never
+    // changes the actual price charged (see calculatePrice()).
+    let referenceNightlyRate: number | undefined;
+    if (availability.available && nights > bookingConfig.referenceStayNights) {
+      try {
+        const reference = await getAvailability({
+          houseId: apartment.houseId,
+          propertyId: apartment.beds24PropertyId,
+          roomId: apartment.beds24RoomId,
+          start,
+          end: addDays(start, bookingConfig.referenceStayNights),
+        });
+        if (reference.available) {
+          referenceNightlyRate = reference.price;
+        }
+      } catch (referenceError) {
+        console.error("Reference price lookup failed:", referenceError);
+      }
+    }
+
+    const price = calculatePrice(
+      availability.price,
+      nights,
+      availability.currency,
+      referenceNightlyRate
+    );
+
+    return NextResponse.json({
+      apartmentSlug,
+      start,
+      end,
+      nights,
+      available: availability.available,
+      minStayValid,
+      minStayNights,
+      maxGuests: apartment.maxGuests,
+      price,
+    });
+  } catch (error) {
+    console.error("Availability API error:", error);
+    return NextResponse.json(
+      { error: "Failed to fetch availability" },
+      { status: 500 }
+    );
+  }
+}