auto-docs: Update Admin API docs for v26.1.3

[vbotbuildovich]

This PR adds the latest OpenAPI spec for version v26.1.3 of the Redpanda Admin API:

npx doc-tools generate bundle-openapi --tag v26.1.3 --use-admin-major-version --surface admin --out-admin admin/admin-v2.yaml

[coderabbitai]

📝 Walkthrough

Walkthrough

The admin/admin-v2.yaml OpenAPI specification file was updated with new metadata values. The x-generated-at timestamp was updated to reflect the generation time as of 2026-01-23T19:28:04.258Z, and the x-redpanda-core-version was incremented from v25.3.5 to v25.3.6. No changes were made to API paths or operation definitions.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• api-docs#31: Updates metadata in admin/admin-v2.yaml including x-generated-at timestamp and version fields.
• api-docs#50: Modifies admin/admin-v2.yaml and updates x-generated-at and x-redpanda-core-version metadata fields.
• api-docs#29: Introduced the v2 OpenAPI spec and updates its metadata fields like x-generated-at and x-redpanda-core-version.

Suggested reviewers

• kbatuigas
• paulohtb6

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The PR title references v26.1.3 but the actual changes show the spec was generated for v25.3.6, creating a version mismatch with the stated objectives.	Correct the PR title to accurately reflect v25.3.6, the actual version being updated in this changeset.

✅ 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.
Description check	✅ Passed	The description mentions v26.1.3 while the PR objectives and actual changes indicate v25.3.6, but the description is still related to the core changeset of updating Admin API documentation.

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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 auto-docs/admin-api

---

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[github-actions]

🚨 Breaking Redpanda/admin (branch: v2) API change detected

Preview documentation

Structural change details

Modified (9)

• POST /redpanda.core.admin.v2.SecurityService/CreateScramCredential
  • Content type modified: application/json
    • Property modified: scramCredential
      • Property added: passwordSetAt
• POST /redpanda.core.admin.v2.SecurityService/UpdateScramCredential
  • Content type modified: application/json
    • Property modified: scramCredential
      • Property added: passwordSetAt
• POST /redpanda.core.admin.v2.ShadowLinkService/CreateShadowLink
  • Content type modified: application/json
    • Property modified: shadowLink
      • Property modified: configurations
        • Properties modified: clientOptions, consumerOffsetSyncOptions, securitySyncOptions, topicMetadataSyncOptions
        • [Breaking] Property modified: shadow_schema_registry_topic
          • Name is no longer schemaRegistrySyncOptions [Breaking]
      • Property added: status
  • Response modified: 200
    • Content type modified: application/json
      • Property modified: shadowLink
        • Properties modified: configurations, status
• POST /redpanda.core.admin.v2.ShadowLinkService/FailOver
  • Response modified: 200
    • Content type modified: application/json
      • Property modified: shadowLink
        • Properties modified: configurations, status
• POST /redpanda.core.admin.v2.ShadowLinkService/GetShadowLink
  • Response modified: 200
    • Content type modified: application/json
      • Property modified: shadowLink
        • Properties modified: configurations, status
• POST /redpanda.core.admin.v2.ShadowLinkService/GetShadowTopic
  • Response modified: 200
    • Content type modified: application/json
      • Property modified: shadowTopic
        • Property modified: status
• POST /redpanda.core.admin.v2.ShadowLinkService/ListShadowLinks
  • Response modified: 200
    • Content type modified: application/json
      • Property modified: shadowLinks
        • Properties modified: configurations, status
• POST /redpanda.core.admin.v2.ShadowLinkService/ListShadowTopics
  • Response modified: 200
    • Content type modified: application/json
      • Property modified: shadowTopics
        • Property modified: status
• POST /redpanda.core.admin.v2.ShadowLinkService/UpdateShadowLink
  • Content type modified: application/json
    • Property modified: shadowLink
      • Property modified: configurations
        • Properties modified: clientOptions, consumerOffsetSyncOptions, securitySyncOptions, topicMetadataSyncOptions
        • [Breaking] Property modified: shadow_schema_registry_topic
          • Name is no longer schemaRegistrySyncOptions [Breaking]
      • Property added: status
  • Response modified: 200
    • Content type modified: application/json
      • Property modified: shadowLink
        • Properties modified: configurations, status

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[kbatuigas]

Diffs are due to the implemented allOf workaround for this API. redpanda-data/docs-extensions-and-macros#179 adds a post processing step that will apply the workaround to incoming v2 specs