Update insulation brand pages (Armaflex, Aeroflex, Maxflex)

- Added 3 new brand pages: armflex.astro, aeroflex.astro, maxflex.astro
- Updated hero images with product photos from 3t-insulation.com
- Enhanced content with product specifications and benefits
- Added standard certifications (FM Approved, UL 94, GREENGUARD)
- Added product gallery sections
- Shortened menu names to brand only (Armaflex, Aeroflex, Maxflex)
- Removed old ฉนวนหุ้มท่อ.astro page
- Updated Header and BaseLayout navigation
- Downloaded product images for all 3 brands

public/images/products-misc/SYLER-b01.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="400" height="300" viewBox="0 0 400 300"><rect width="400" height="300" fill="#6366f1"/><text x="200" y="150" text-anchor="middle" fill="white" font-family="sans-serif" font-size="18">Syler</text></svg>

public/images/products-misc/SYLER-b02.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="400" height="300" viewBox="0 0 400 300"><rect width="400" height="300" fill="#6366f1"/><text x="200" y="150" text-anchor="middle" fill="white" font-family="sans-serif" font-size="18">Syler</text></svg>

public/images/products-misc/SYLER-b03.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="400" height="300" viewBox="0 0 400 300"><rect width="400" height="300" fill="#6366f1"/><text x="200" y="150" text-anchor="middle" fill="white" font-family="sans-serif" font-size="18">Syler</text></svg>

public/images/products-misc/mech.svg

@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="400" height="400" viewBox="0 0 400 400">
+  <rect width="400" height="400" fill="#ca8a04"/>
+  <text x="200" y="100" text-anchor="middle" fill="white" font-family="sans-serif" font-size="24" font-weight="600">เม็ดกรู๊ฟ</text>
+  <circle cx="160" cy="250" r="35" fill="none" stroke="white" stroke-width="6"/>
+  <circle cx="240" cy="250" r="35" fill="none" stroke="white" stroke-width="6"/>
+  <line x1="195" y1="250" x2="205" y2="250" stroke="white" stroke-width="8"/>
+</svg>

public/images/products-misc/ppr-welding.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="400" height="400" viewBox="0 0 400 400">
+  <rect width="400" height="400" fill="#f97316"/>
+  <text x="200" y="100" text-anchor="middle" fill="white" font-family="sans-serif" font-size="24" font-weight="600">เครื่องเชื่อม PPR</text>
+  <rect x="120" y="160" width="160" height="120" rx="10" fill="none" stroke="white" stroke-width="6"/>
+  <circle cx="200" cy="220" r="30" fill="none" stroke="white" stroke-width="4"/>
+</svg>

public/images/products-misc/syler001.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="400" height="300" viewBox="0 0 400 300"><rect width="400" height="300" fill="#6366f1"/><text x="200" y="150" text-anchor="middle" fill="white" font-family="sans-serif" font-size="18">Syler</text></svg>