Fix: replace non-existent apps with real templates, fix 500 errors on old doc paths

- AppShowcase: Removed 7 non-existent apps (Kaleidescape, Synology Photos, Homelabs, DockSTARTer, Unraid, TrueNAS, New Relic), added 50+ real app templates that exist in code
- Updated template count from 76+ to 92+ across all pages
- Fixed test count from 1400+ to 775+ (actual count)
- Added mod_rewrite fallback for old doc path redirects (fixes 500 errors)
- Added caching, compression, and proper error handling in .htaccess

src/app/about/page.tsx

@@ -117,7 +117,7 @@ export default function AboutPage() {
                 { name: "Express", role: "REST API + WebSocket", icon: "⚡" },
                 { name: "MCP", role: "AI Protocol Layer", icon: "🤖" },
                 { name: "Stripe", role: "Payment Processing", icon: "💳" },
-                { name: "Jest", role: "Testing (1400+ tests)", icon: "✅" },
+                { name: "Jest", role: "Testing (775+ tests)", icon: "✅" },
               ].map((tech) => (
                 <div
                   key={tech.name}
@@ -140,8 +140,8 @@ export default function AboutPage() {
             </h2>
             <div className="grid grid-cols-2 md:grid-cols-4 gap-8">
               {[
-                { value: "76+", label: "App Templates" },
-                { value: "1400+", label: "Test Cases" },
+                { value: "92+", label: "App Templates" },
+                { value: "775+", label: "Test Cases" },
                 { value: "39", label: "SDK Methods" },
                 { value: "5", label: "Languages" },
               ].map((stat) => (