[TASK] Implement fix assets endpoints

[hassandotcms]

Description

Implement POST /v1/maintenance/_fixAssets and GET /v1/maintenance/_fixAssets in MaintenanceResource.java. POST starts the fix assets inconsistencies process which runs all registered FixTask classes. GET returns the current/last results for progress checking.

Acceptance Criteria

POST /v1/maintenance/_fixAssets

• Endpoint must call FixTasksExecutor.getInstance().execute(null) to run all registered fix tasks
• API caller must receive a list of task results, each containing: total, errorsFixed, initialTime, finalTime, description
• API caller must receive null/empty entity if no tasks were executed
• Must require CMS Administrator role and Maintenance portlet access

GET /v1/maintenance/_fixAssets

• API caller must receive the current task results from FixTasksExecutor.getInstance().getTasksresults()
• API caller must receive null/empty entity if no results exist
• Must require CMS Administrator role and Maintenance portlet access

Priority

None

Additional Context

• FixTasksExecutor.execute() is synchronous — blocks until all tasks complete. Results accumulate incrementally in returnValue as each task finishes
• Tasks loaded from TaskLocatorUtil.getFixTaskClasses(), sorted by name, each runs shouldRun() + executeFix() in Hibernate transactions
• GET is called on page load to recover results from a previous run
• DWR legacy: CMSMaintenanceAjax.fixAssetsInconsistencies() and getFixAssetsProgress()

[github-actions]

PRs linked to this issue

• maintenance portlet | Implement fix assets and clean orphan assets polling APIs #35191 by @hassandotcms