docs (k8s): Add config-watcher sidecar resource configuration

[david-yu]

Summary

• Adds a new "Configure config-watcher sidecar resources" section to the Manage Pod Resources page
• Explains what the config-watcher sidecar does (monitors SASL user changes and configuration updates)
• Documents that resources are unset by default and why that is acceptable for most clusters
• Lists scenarios where explicit resources are needed (LimitRange, ResourceQuota, Guaranteed QoS)
• Provides Operator and Helm examples with recommended values (10m/64Mi requests, 100m/128Mi limits)
• Includes a verification command to confirm the sidecar resources after deployment

Context

The config-watcher sidecar container does not set resource requests or limits by default, and the existing documentation does not describe how to configure them. Customers running in namespaces with LimitRange or ResourceQuota policies, or targeting Guaranteed QoS, need guidance on setting these values. The QoS section already references sideCars.configWatcher.resources but does not explain the sidecar or provide standalone configuration guidance.

Test plan

• Verify AsciiDoc renders correctly in the docs site preview
• Confirm the statefulset.sideCars.configWatcher.resources path is valid in both Operator CRD and Helm values
• Verify the kubectl jsonpath verification command returns expected output

🤖 Generated with Claude Code

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[coderabbitai]

📝 Walkthrough

Walkthrough

A new documentation section has been added to the Kubernetes resource management page, covering CPU and memory resource configuration for the config-watcher sidecar container in Redpanda Pods. The addition includes practical examples for both Operator and Helm configuration methods, kubectl commands for verification, and guidance on when explicit resource limits and requests are necessary (specifically in scenarios involving LimitRange constraints, ResourceQuota policies, and QoS class requirements).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~15 minutes

Suggested reviewers

• JakeSCahill

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	The description covers the main content added, context, and test plan, but is missing required template sections: the Jira ticket reference, review deadline, and page preview link.	Add the JIRA ticket identifier, review deadline, and the Netlify page preview URL to match the repository's description template.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	The title accurately and specifically describes the main change: adding documentation about config-watcher sidecar resource configuration to the Kubernetes management page.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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