fix(web): disable PostHog session replay only in local dev (#22)

Merged after Greptile CLI review clean, PR-side Greptile passed, and typecheck passed. Deploy preview failure is pre-existing (expired VERCEL_TOKEN).

Author: leoisadev1

apps/web/src/lib/posthog.ts

@@ -58,7 +58,7 @@ export function getPostHogOptions(): Partial<PostHogConfig> {
     capture_pageleave: false,
     capture_pageview: false,
     defaults: "2026-01-30",
-    disable_session_recording: true,
+    disable_session_recording: import.meta.env.DEV,
     person_profiles: "identified_only",
     persistence: "localStorage+cookie",
     loaded: (client) => {