tidb-cloud: add TopRU user guide in TiDB Cloud Clinic (Premium)#22760

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zimulala wants to merge 3 commits intopingcap:masterfrom

zimulala:codex/topru-cloud-premium-doc-master

Commits on Apr 15, 2026

tidb-cloud: add TopRU Clinic user guide
zimulala
committed

Commits on Apr 16, 2026

tidb-cloud: make TopRU guide user-facing
zimulala
committed

Commits on Apr 27, 2026

tidb-cloud: refine TopRU clinic wording and screenshots
zimulala
committed