Remove redundant template_viewed PostHog event

PostHog auto-captures $pageview events, making the custom template_viewed event redundant.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: robinjhuang

site/src/components/template-detail/TemplateDetailPage.astro

@@ -270,9 +270,6 @@ function formatRelativeDate(dateStr: string): string {
     if (window.posthog) window.posthog.capture(event, props);
   }
 
-  // Track template page view
-  phCapture('template_viewed', { template_name: templateName, media_type: mediaType });
-
   // Run on Cloud button
   document.querySelectorAll('.run-cloud-btn').forEach((link) => {
     link.addEventListener('click', () => {

site/src/lib/posthog.ts

@@ -22,7 +22,7 @@ export function initPostHog(): void {
  * All tracked events follow the object_verb taxonomy:
  * - snake_case
  * - past tense verbs
- * - e.g. run_button_clicked, template_viewed
+ * - e.g. run_button_clicked, search_performed
  */
 type EventProperties = Record<string, string | number | boolean | undefined>;
 
@@ -55,16 +55,6 @@ export function trackShareButtonClicked(templateName: string): void {
   });
 }
 
-export function trackTemplateViewed(
-  templateName: string,
-  mediaType: string,
-): void {
-  capture('template_viewed', {
-    template_name: templateName,
-    media_type: mediaType,
-  });
-}
-
 export function trackSearchPerformed(query: string): void {
   capture('search_performed', {
     query,