My rebase of this branch onto the squashed main resolved a docs.json conflict by
keeping both sides. One of those sides was a deliberate deletion: this PR removed
"contributing/studio-manual-dom-editing" from the sidebar precisely because it
also became a redirect source pointing at /studio/canvas. Re-inserting it left a
Contributing entry that bounces the reader somewhere else when clicked.
Nav collision count is back to 0. The redirect and the page file are untouched;
contributing/canary-rollouts stays, since that one genuinely arrived from main.
ukimsanov
1a82615f64
