Redesigned merge flow for duplicates

We've completely redesigned how duplicate merging works. The new flow makes it easy to preview, confirm, and undo merges with confidence.

Stacked preview cards

Merge suggestions now display as stacked cards so you can see exactly what the merged result will look like before confirming. No more guessing what happens when you hit merge.

Bidirectional merge

Can't decide which post should be the canonical one? Swap the merge direction with a single toggle. Choose "Merge others into this" or "Merge into existing" depending on which post has the better title and discussion.

Full preview before merging

Click any preview card to see the complete post including comments from both sides. This means you can review the full context before combining feedback.

Safe by default

Every merge includes:

• A confirmation dialog before anything changes
• Inline undo immediately after merging
• Full attribution — votes and comments from both posts are preserved
• A post-merge recheck that re-evaluates remaining suggestions