Add EmDash CMS blog + hero standardization + seed fix

- Add EmDash CMS integration with SQLite and local storage
- Add blog collection (seed/seed.json) with 3 sample posts
- Add /บทความ list page and /บทความ/[slug] detail page
- Add blog section to homepage
- Fix reserved field slugs (slug, published_at removed from fields)
- Fix date field mapping (publishedAt camelCase)
- Fix featured image URL for admin-uploaded images (meta.storageKey)
- Standardize all product page hero sections
- Update navigation with 'บทความ' link
- Configure Google OAuth provider

src/pages/durgo-avvs.astro

@@ -14,8 +14,6 @@ import BaseLayout from '@/layouts/BaseLayout.astro';
       <div class="absolute top-1/4 left-1/4 w-2 h-2 bg-white/30 rounded-full animate-float"></div>
       <div class="absolute top-1/3 right-1/4 w-3 h-3 bg-primary-300/20 rounded-full animate-float-delayed-1"></div>
       <div class="absolute top-2/3 left-1/3 w-2 h-2 bg-primary-200/20 rounded-full animate-float-delayed-2"></div>
-      <div class="absolute top-1/2 right-1/3 w-4 h-4 bg-white/15 rounded-full animate-float"></div>
-      <div class="absolute bottom-1/4 left-2/3 w-3 h-3 bg-primary-400/15 rounded-full animate-float-delayed-3"></div>
       
       <!-- Water-inspired Waves -->
       <svg class="absolute bottom-0 left-0 w-full h-[250px] opacity-20" viewBox="0 0 1440 250" preserveAspectRatio="none">
@@ -53,14 +51,14 @@ import BaseLayout from '@/layouts/BaseLayout.astro';
             </p>
             <div class="flex flex-wrap gap-4 mb-8">
               <a href="https://line.me/ti/p/~JPPSELECTION" target="_blank" class="bg-accent-500 hover:bg-accent-600 text-white py-3 px-6 rounded-xl font-semibold flex items-start gap-2">
-                <span>แชท Line</span>
                 <svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24"><path d="M19.365 9.863c.349 0 .63.285.63.631 0 .345-.281.63-.63.63H17.61v1.125h1.755c.349 0 .63.283.63.63 0 .344-.281.629-.63.629h-2.386c-.345 0-.627-.285-.627-.629V8.108c0-.344.282-.629.627-.629h2.386c.349 0 .63.285.63.63 0 .349-.281.63-.63.63H17.61v1.125h1.755zm-3.855 3.016c0 .27-.174.51-.432.596-.064.021-.133.031-.199.031-.211 0-.391-.09-.51-.25l-2.443-3.317v2.94c0 .344-.279.629-.631.629-.346 0-.626-.285-.626-.629V8.108c0-.27.173-.51.43-.595.06-.023.136-.033.194-.033.195 0 .375.104.495.254l2.462 3.33V8.108c0-.345.282-.629.63-.629.345 0 .63.284.63.629v4.771zm-5.741 0c0 .344-.282.629-.631.629-.345 0-.627-.285-.627-.629V8.108c0-.345.282-.629.627-.629.349 0 .631.284.631.629v4.771zm-2.466.629H4.917c-.345 0-.63-.285-.63-.629V8.108c0-.345.285-.629.63-.629.348 0 .63.284.63.629v4.141h1.756c.348 0 .629.283.629.63 0 .344-.282.629-.629.629M24 10.314C24 4.943 18.615.572 12 .572S0 4.943 0 10.314c0 4.811 4.27 8.842 10.035 9.608.391.082.923.258 1.058.59.12.301.079.766.038 1.08l-.164 1.02c-.045.301-.24 1.186 1.049.645 1.291-.539 6.916-4.078 9.436-6.975C23.176 14.393 24 12.458 24 10.314"/></svg>
+                <span>แชท Line</span>
               </a>
               <a href="tel:0905551415" class="bg-white text-primary-700 hover:bg-primary-50 py-3 px-6 rounded-xl font-semibold flex items-start gap-2">
-                <span>090-555-1415</span>
                 <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                   <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 5a2 2 0 012-2h3.28a1 1 0 01.948.684l1.498 4.493a1 1 0 01-.502 1.21l-2.257 1.13a11.042 11.042 0 005.516 5.516l1.13-2.257a1 1 0 011.21-.502l4.493 1.498a1 1 0 01.684.949V19a2 2 0 01-2 2h-1C9.716 21 3 14.284 3 6V5z"/>
                 </svg>
+                <span>090-555-1415</span>
               </a>
               <a href="#pricelist" data-price-button class="hidden bg-white text-primary-700 hover:bg-primary-50 py-3 px-6 rounded-xl font-semibold flex items-start gap-2">
                 <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">