fix: RecentPostsWidget TypeError when query returns non-array

[sentry]

This PR addresses a TypeError: r.map is not a function occurring in the RecentPostsWidget component.

Problem:
The RecentPostsWidget component was crashing when the fetchRecentPosts query (via recentPostsQuery.data) returned a truthy value that was not an array (e.g., a JSON error object or intercepted HTML from Cloudflare). The existing guard if (!visiblePosts) only checked for falsy values, allowing non-array objects to be passed to RecentPostsList, where posts.map() would then fail.

Solution:
Modified the conditional check in src/components/RecentPostsWidget.tsx on line 104 from if (!visiblePosts) to if (!visiblePosts || !Array.isArray(visiblePosts)). This ensures that if recentPostsQuery.data is not an array, the component will correctly render the RecentPostsSkeleton fallback, preventing the TypeError and improving the robustness of the widget.

Fixes TANSTACK-COM-4EW

_{This PR was automatically generated by Sentry. You can adjust this setting at any time.}

[cloudflare-workers-and-pages]

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	tanstack-com	868bbc8	Commit Preview URL Branch Preview URL	Aug 31 2026, 11:04 AM

[tannerlinsley]

Source audit note: PR #1185 already addresses the same RecentPostsWidget map TypeError and contains the same client-side array guard. This PR is the narrower duplicate, but neither PR establishes how the server function, which is typed and implemented to return RecentPost[], produced a non-array runtime payload. Please consolidate these rather than merge both, and use the Sentry transport payload to decide whether the client guard is the right owner.