feat: replace all booking CTAs with BookedIn scheduling link

Replace /contact/ booking links sitewide with the BookedIn external
scheduling URL (https://bookedin.com/book/lahr-carpet-cleaning-and-upholstery).
All "Book Now" and "Get a Free Estimate" buttons across 38 HTML pages now
open the BookedIn scheduler in a new tab. Added a "Book Online" CTA button
to the shared nav bar and a booking link in the footer (components.js).
The contact page retains its form as a secondary option, with a prominent
"Book Online Instantly" banner added above it.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

services/area-rugs/index.html

@@ -20,7 +20,7 @@
                 <span class="hero-eyebrow"><i class="fas fa-map-marker-alt"></i> Waterloo, Seneca Falls &amp; the Finger Lakes</span>
                 <h1>Area Rug Cleaning in Waterloo, NY</h1>
                 <p>Area rugs trap allergens, pet dander, and dust mites deep in the fibers. Gentle but thorough cleaning removes what regular vacuuming cannot reach.</p>
-                <a href="/contact/" class="btn btn-primary btn-large">Book Now</a>
+                <a href="https://bookedin.com/book/lahr-carpet-cleaning-and-upholstery" target="_blank" rel="noopener noreferrer" class="btn btn-primary btn-large">Book Now</a>
             </div>
         </div>
     </section>
@@ -65,7 +65,7 @@
                     <h2>Wool, Synthetic, and Delicate Rugs Welcome</h2>
                     <p>We clean area rugs of all common fiber types including wool, polypropylene, nylon, cotton, and blended synthetics. Each rug is inspected for fiber type and condition before cleaning begins. Delicate or hand-woven pieces receive a gentler approach.</p>
                     <p>If your rug smells, looks flat, or has visible staining, professional cleaning will make a clear difference. A rug that looks too far gone often surprises its owner after a thorough clean.</p>
-                    <a href="/contact/" class="btn btn-primary">Book Now</a>
+                    <a href="https://bookedin.com/book/lahr-carpet-cleaning-and-upholstery" target="_blank" rel="noopener noreferrer" class="btn btn-primary">Book Now</a>
                 </div>
                 <div class="why-choose-image" style="background-image: url('/assets/images/hero/hero-area-rugs.webp')"></div>
             </div>
@@ -78,7 +78,7 @@
                 <h2>Give Your Rugs a Real Clean</h2>
                 <p>Serving Waterloo, Seneca Falls, and the Finger Lakes region.</p>
                 <div class="cta-actions">
-                    <a href="/contact/" class="btn btn-primary btn-large">Book Now</a>
+                    <a href="https://bookedin.com/book/lahr-carpet-cleaning-and-upholstery" target="_blank" rel="noopener noreferrer" class="btn btn-primary btn-large">Book Now</a>
                     <a href="tel:315-719-1218" class="btn btn-ghost btn-large"><i class="fas fa-phone"></i> 315-719-1218</a>
                 </div>
             </div>