docs: Wire up single-sourced Cloud Topics page

[micheleRP]

What

The Cloud Topics page (develop/topics/cloud-topics.adoc) was rendering blank in production. It was never wired up for single-sourcing: it was still a placeholder stub with a // TODO comment and no include:: directive, so it had a title (appeared in nav) but no body.

This replaces the placeholder with an include of the source page in the streaming component (docs repo), matching the sibling configure-producers-for-cloud-topics.adoc page:

include::streaming:develop:manage-topics/cloud-topics.adoc[tag=single-source]

How it slipped through

1. The source page was created in the docs repo while the component was still ROOT.
2. The placeholder stub was added here with a TODO to wire it up "when streaming component has cloud-topics file."
3. The docs repo component was renamed ROOT -> streaming, satisfying that condition.
4. The sibling producers page was wired up, but this stub was forgotten.

Companion PR (required)

• docs: Fix cloud-divergent xrefs in single-sourced Cloud Topics content docs#1722 fixes two cloud-divergent xrefs in the single-sourced content. The links on this page only resolve cleanly once that PR merges.

Verification

Built locally against the docs PR branch. The page renders in full (overview, Prerequisites, Limitations, Enable Cloud Topics), the cloud-only Prerequisites branch shows while self-managed-only content is excluded, and all outbound links resolve.

🤖 Generated with Claude Code

Preview pages

• Manage Cloud Topics (updated)

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[coderabbitai]

📝 Walkthrough

Walkthrough

This PR updates the "Manage Cloud Topics" documentation page by replacing placeholder TODO comments with an include:: directive that pulls shared content from the canonical cloud topics source located in the streaming module (streaming:develop:manage-topics/cloud-topics.adoc with the single-source tag). This establishes a single-source-of-truth pattern for cloud topic management documentation.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• redpanda-data/cloud-docs#526: Updates the shared single-source AsciiDoc for "Manage Cloud Topics" in the develop module, which this PR then includes from the new cloud-topics page.

Suggested reviewers

• WillemKauf
• dotnwat
• Feediver1

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description lacks the required template structure with issue link, page preview link, and checkbox selection for change type.	Add the missing template sections: GitHub issue link, page preview URL, and check the appropriate change type checkbox (Content gap appears most relevant here).

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'docs: Wire up single-sourced Cloud Topics page' clearly and concisely describes the main change: replacing a placeholder with a single-source include directive for the Cloud Topics documentation page.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch cloud-topics-single-source

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[Feediver1]

lgtm