Admin: no way to navigate to merged posts from the post view (have to type feedback ID in URL)

Expected Behavior From a post's view in the admin app, an admin should be able to see and click through to related merged posts — both the post this one was merged into and posts merged from it — the same way similar posts and metadata are surfaced. Current Behavior When viewing a post that was merged into another, there's no visible link or list to reach the merged post(s). The only workaround is to manually type the feedback ID into the URL bar. (Marco noted such a list is expected to exist, so this may also point to a reverted or broken merge state.) Possible Solution Surface a "merged into / merged from" section on the post view — like the similar-posts and metadata panels — with clickable links to each related post. Steps to Reproduce Merge post A into post B. Open the merged post in the admin app. Try to navigate to the related post — there's no link/list, so you have to edit the URL manually. Context (Environment) Raised by Cyriane (Dendreo) in the shared Slack channel, June 2026. Example: viewing a feedback Charlotte had merged, with no way to open the merged target except by typing its ID in the URL. Slows down moderation and duplicate review. Filed via the Sleekplan MCP.