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/floors/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>Floor Cleaning Services in Waterloo, NY</h1>
                 <p>Mopping pushes grime around grout lines without removing it. Professional agitation and extraction restores the color your floors used to have.</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>Professional Results on Multiple Hard Floor Types</h2>
                     <p>We work on tile, ceramic, porcelain, vinyl, and LVP. Each surface type is assessed before cleaning begins to confirm the right approach. Grout sealing is available as an add-on after cleaning to help maintain the results.</p>
                     <p>If your floors look dull or your grout lines have darkened despite regular mopping, professional cleaning will show you the difference. Book the service and see what the floor actually looks like 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-floors.webp')"></div>
             </div>
@@ -78,7 +78,7 @@
                 <h2>Restore Your Hard Floors</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>