fixup! feat: add prune_db command to prune old checkouts, builds and tests. * Delete rows older than a given age with manual cascade (checkout -> builds -> tests) * --origins scoping, --dry-run and a --yes confirmation. Extract parse_interval into a shared helper and add integration tests.

    * Add tables parameter.
    * Protect issue related rows by default, and add parameter to
      bypass.

Signed-off-by: Alan Peixinho <alan.peixinho@profusion.mobi>

Author: alanpeixinho

backend/kernelCI_app/management/commands/prune_db.py

@@ -8,6 +8,10 @@
 
 Rows linked to an incident (an issue) are kept by default, together with their
 ancestors so nothing is orphaned; pass --skip-issue-protection to prune them too.
+
+Only checkouts, builds and tests are touched. Aggregate and derived tables (e.g.
+tree_tests_rollup, hardware_status, latest_checkout) are left untouched and must
+be cleaned up separately.
 """
 
 from django.core.management.base import BaseCommand, CommandError