[9.0] Advanced option for orphaned agent remediation (elastic#236917) (elastic#237041)

# Backport

This will backport the following commits from `main` to `9.0`:
- [Advanced option for orphaned agent remediation
(elastic#236917)](elastic#236917)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Leszek
Kubik","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-09-30T21:01:45Z","message":"Advanced
option for orphaned agent remediation (elastic#236917)\n\n## Summary\n\nAdds an
advanced option to enable or disable orphaned state remediation.\n\nWhen
Elastic Endpoint detects orphaned state is may attempt to remediate\nit
by starting Elastic Agent service.\n\n## Release note\n\nAdds an
advanced option to enable or disable orphaned state remediation.\n\n###
Checklist\n\nCheck the PR satisfies following conditions. \n\nReviewers
should verify this PR satisfies this list as well.\n\n- [ ] Any text
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risk, its severity, and mitigation for each identified\nrisk. Invite
stakeholders and evaluate how to proceed before merging.\n\n- [ ] [See
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Elastic Endpoint detects orphaned state is may attempt to remediate\nit
by starting Elastic Agent service.\n\n## Release note\n\nAdds an
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appropriate Release Notes section,\nand the correct `release_note:*`
label is applied per
the\n[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\n-
[ ] Review the
[backport\nguidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)\nand
apply applicable `backport:*` labels.\n\n### Identify risks\n\nDoes this
PR introduce any risks? For example, consider risks like hard\nto test
bugs, performance regression, potential of data loss.\n\nDescribe the
risk, its severity, and mitigation for each identified\nrisk. Invite
stakeholders and evaluate how to proceed before merging.\n\n- [ ] [See
some
risk\nexamples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx)\n-
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advanced option to enable or disable orphaned state remediation.\n\nWhen
Elastic Endpoint detects orphaned state is may attempt to remediate\nit
by starting Elastic Agent service.\n\n## Release note\n\nAdds an
advanced option to enable or disable orphaned state remediation.\n\n###
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should verify this PR satisfies this list as well.\n\n- [ ] Any text
added follows [EUI's
writing\nguidelines](https://elastic.github.io/eui/#/guidelines/writing),
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cloud and added to the
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[ ] This was checked for breaking HTTP API changes, and any
breaking\nchanges have been approved by the breaking-change committee.
The\n`release_note:breaking` label should be applied in these
situations.\n- [ ] [Flaky
Test\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1)
was\nused on any tests changed\n- [ ] The PR description includes the
appropriate Release Notes section,\nand the correct `release_note:*`
label is applied per
the\n[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\n-
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apply applicable `backport:*` labels.\n\n### Identify risks\n\nDoes this
PR introduce any risks? For example, consider risks like hard\nto test
bugs, performance regression, potential of data loss.\n\nDescribe the
risk, its severity, and mitigation for each identified\nrisk. Invite
stakeholders and evaluate how to proceed before merging.\n\n- [ ] [See
some
risk\nexamples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx)\n-
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BACKPORT-->

Co-authored-by: Leszek Kubik <[email protected]>

Author: kibanamachine

x-pack/solutions/security/plugins/security_solution/public/management/pages/policy/models/advanced_policy_schema.ts

@@ -2422,4 +2422,37 @@ export const AdvancedPolicySchema: AdvancedPolicySchemaType[] = [
       }
     ),
   },
+  {
+    key: 'linux.advanced.agent.orphaned_remediation',
+    first_supported_version: '9.2',
+    documentation: i18n.translate(
+      'xpack.securitySolution.endpoint.policy.advanced.linux.advanced.agent.orphaned_remediation',
+      {
+        defaultMessage:
+          'Should Endpoint attempt to start Agent service when becoming orphaned. Default: false.',
+      }
+    ),
+  },
+  {
+    key: 'mac.advanced.agent.orphaned_remediation',
+    first_supported_version: '9.2',
+    documentation: i18n.translate(
+      'xpack.securitySolution.endpoint.policy.advanced.mac.advanced.agent.orphaned_remediation',
+      {
+        defaultMessage:
+          'Should Endpoint attempt to start Agent service when becoming orphaned. Default: false.',
+      }
+    ),
+  },
+  {
+    key: 'windows.advanced.agent.orphaned_remediation',
+    first_supported_version: '9.2',
+    documentation: i18n.translate(
+      'xpack.securitySolution.endpoint.policy.advanced.windows.advanced.agent.orphaned_remediation',
+      {
+        defaultMessage:
+          'Should Endpoint attempt to start Agent service when becoming orphaned. Default: false.',
+      }
+    ),
+  },
 ];