docs: document client_id as alternative to pod_id in Get/Delete Pod

[Haakam21]

Summary

• Updated Get Pod and Delete Pod endpoint docs to note that client_id can be passed in place of pod_id
• Updated PodId type description to mention client_id as an alternative
• Added a note in the Pods concept page (client_id tip section) about this capability

Test plan

• Verify rendered API docs show the updated parameter descriptions for Get Pod and Delete Pod
• Verify the Pods concept page tip renders correctly with the new sentence

🤖 Generated with Claude Code

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Summary by cubic

Documented that client_id can be used anywhere pod_id is accepted, including the Get Pod and Delete Pod endpoints. Updated the PodId type docs and added a tip on the Pods concept page to clarify this.

^{Written for commit 609ac8b. Summary will update on new commits.}

[github-actions]

✨ API Changes

# API Changelog n/a vs. n/a

No changes

💡 Download api-changelog-diff artifact or tag @fern Writer in #github-prs for changelog.

[github-actions]

🌿 Preview your docs: https://agentmail-preview-aa901373-58d4-447d-b6e8-256ec77bd750.docs.buildwithfern.com

[cubic-dev-ai]

No issues found across 2 files