fix(homepage): stop stats counters from getting stuck at "0"

The stats tiles ("Projects Delivered" etc.) could end up frozen at
0+/0%/0+/0 whenever the IntersectionObserver never fired (tall
sections on mobile, threshold too strict, JS error, prefers-reduced-motion).

- Server-render the final value as the initial textContent so the
  numbers are correct on first paint, with JS disabled, and on any
  hydration failure.
- Lower observer threshold to 0.1 and add rootMargin so the animation
  triggers reliably on tall viewports.
- Detect prefers-reduced-motion and render the final value without
  animating.
- Fall back to immediate animation when IntersectionObserver is
  unavailable or the section is already in view at load.
- Reset to 0 only at the moment the animation starts (and snap to
  the exact target at the end) so a mid-flight failure can never
  leave the counter visibly stuck.
- Boot all homepage scripts after DOMContentLoaded.

src/pages/index.astro

@@ -492,7 +492,7 @@ const faqs = [
             </div>
 
             <div class="stat-counter text-5xl font-bold text-secondary-900 dark:text-secondary-100 mb-2" data-target={stat.value} data-suffix={stat.suffix}>
-              0{stat.suffix}
+              {stat.value}{stat.suffix}
             </div>
             <div class="text-secondary-600 dark:text-secondary-400 font-semibold">{stat.label}</div>
           </div>
@@ -792,14 +792,33 @@ const faqs = [
 
 <script>
   // Stats counter animation
+  // The initial textContent already renders the final value (server-side),
+  // so users with no JS / failed hydration / reduced-motion still see the
+  // correct number. The animation here briefly resets to 0 and counts up.
   function animateCounters() {
-    const counters = document.querySelectorAll('.stat-counter');
+    const counters = document.querySelectorAll<HTMLElement>('.stat-counter');
     const duration = 2000;
+    const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
 
     counters.forEach((counter) => {
-      const target = parseInt(counter.getAttribute('data-target') || '0');
+      const target = parseInt(counter.getAttribute('data-target') || '0', 10);
       const suffix = counter.getAttribute('data-suffix') || '';
+
+      // Guaranteed final state — set the resolved value up front so a
+      // mid-animation failure can never leave the user staring at "0".
+      const finalText = target + suffix;
+
+      if (reduceMotion || !Number.isFinite(target) || target <= 0) {
+        counter.textContent = finalText;
+        return;
+      }
+
+      // Avoid running the animation more than once per counter.
+      if (counter.dataset.counted === 'true') return;
+      counter.dataset.counted = 'true';
+
       const startTime = performance.now();
+      counter.textContent = '0' + suffix;
 
       function updateCounter(currentTime: number) {
         const elapsed = currentTime - startTime;
@@ -811,6 +830,9 @@ const faqs = [
 
         if (progress < 1) {
           requestAnimationFrame(updateCounter);
+        } else {
+          // Snap to exact final value to avoid floor-rounding drift.
+          counter.textContent = finalText;
         }
       }
 
@@ -917,8 +939,22 @@ const faqs = [
   }
 
   // Intersection Observer for counter animation
-  const statsSection = document.querySelector('.stat-counter')?.closest('section');
-  if (statsSection) {
+  function initStatsCounter() {
+    const firstCounter = document.querySelector('.stat-counter');
+    const statsSection = firstCounter?.closest('section');
+
+    // If the markup isn't there for any reason, bail silently — the
+    // server-rendered numbers are already correct.
+    if (!statsSection) return;
+
+    // Older browsers / failed feature detection: just render the final
+    // values immediately. They're already in the DOM, but this also
+    // protects against the path where data-target was patched at runtime.
+    if (typeof IntersectionObserver === 'undefined') {
+      animateCounters();
+      return;
+    }
+
     const observer = new IntersectionObserver(
       (entries) => {
         entries.forEach((entry) => {
@@ -928,14 +964,36 @@ const faqs = [
           }
         });
       },
-      { threshold: 0.3 }
+      // Lower threshold so the animation fires reliably on tall mobile
+      // viewports; rootMargin lets it kick in just before the section
+      // scrolls into view for a smoother first impression.
+      { threshold: 0.1, rootMargin: '0px 0px -10% 0px' }
     );
+
     observer.observe(statsSection);
+
+    // If the section is already in the viewport at load time the
+    // observer fires on its next tick, but we also guard with a fallback
+    // so anyone who lands mid-scroll never sees the static "0" path.
+    const rect = statsSection.getBoundingClientRect();
+    const inView = rect.top < window.innerHeight && rect.bottom > 0;
+    if (inView) {
+      animateCounters();
+      observer.disconnect();
+    }
   }
 
-  // Initialize components
-  initCarousel();
-  initFAQ();
+  function bootHomepageScripts() {
+    initStatsCounter();
+    initCarousel();
+    initFAQ();
+  }
+
+  if (document.readyState === 'loading') {
+    document.addEventListener('DOMContentLoaded', bootHomepageScripts);
+  } else {
+    bootHomepageScripts();
+  }
 
   // Smooth scroll for anchor links
   document.querySelectorAll('a[href^="#"]').forEach(anchor => {